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WO2003087928A1 - Systeme d'imagerie - Google Patents

Systeme d'imagerie Download PDF

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Publication number
WO2003087928A1
WO2003087928A1 PCT/JP2003/004421 JP0304421W WO03087928A1 WO 2003087928 A1 WO2003087928 A1 WO 2003087928A1 JP 0304421 W JP0304421 W JP 0304421W WO 03087928 A1 WO03087928 A1 WO 03087928A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
imaging device
emitting diode
light emitting
imaging
Prior art date
Application number
PCT/JP2003/004421
Other languages
English (en)
Japanese (ja)
Inventor
Noriyuki Komori
Hidehiko Nakatani
Ichihiro Abe
Yushi Nagatoshi
Yuji Tadano
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to JP2003584811A priority Critical patent/JP3607281B2/ja
Priority to CN038055848A priority patent/CN1639628B/zh
Priority to TW092108196A priority patent/TW587193B/zh
Publication of WO2003087928A1 publication Critical patent/WO2003087928A1/fr

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units
    • G03B2215/0503—Built-in units
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units
    • G03B2215/0589—Diffusors, filters or refraction means
    • G03B2215/0592—Diffusors, filters or refraction means installed in front of light emitter

Definitions

  • the present invention relates to an imaging device such as a camera-equipped mobile phone provided with an electronic camera having a solid-state imaging device. .
  • a mobile phone with a camera having a combined function of a camera and a mobile phone has recently been commercialized.
  • cameras With the use of cameras in camera-equipped mobile phones, there has been a demand for having a function that can photograph subjects without problems even in dark places.
  • the camera-equipped mobile phone has a liquid crystal display 4 including a backlight 2 and a liquid crystal panel 3 mounted on an electronic circuit board 1 and a position above the liquid crystal display 4.
  • the electronic camera 5 including a photographing lens and a solid-state imaging device (CCD) and a strobe device 6 are arranged side by side in a row.
  • CCD solid-state imaging device
  • the strobe device 6 includes a strobe discharge tube 7 and a reflector 8, and a protector 10 is attached to a cover panel 9 at a window corresponding to the strobe device 6. Further, a main capacitor 11 for charging is arranged on the back surface of the electronic circuit board 1.
  • An object of the present invention is to solve the above-mentioned problems, and to provide an imaging device that can be thinned by a small light that can be lit at all times and that can shoot a subject without any problem even in a dark place.
  • the writing device includes a key operation or control of the imaging device.
  • a light emitting diode operated to emit light
  • a reflecting member for bending an optical axis of light emitted from the light emitting diode in an imaging direction
  • a light distribution lens for distributing the light reflected by the reflecting member to an imaging range.
  • the writing device in an imaging device including an imaging device for imaging a subject and a lighting device for illuminating the subject, includes a key operation or control of the imaging device.
  • a light emitting diode operated to emit light by the light emitting diode, and a reflecting member that bends an optical axis of light emitted from the light emitting diode in an imaging direction, between the light emitting diode and the reflecting member, from the light emitting diode.
  • the structure is provided with a light distribution lens that condenses the emitted light, guides the light to the reflection member, and distributes the light to the imaging range by reflection at the reflection member.
  • the imaging device according to the first aspect not only the same effects as those of the imaging device according to the first aspect are exhibited, but also the light of the light emitting diode can be efficiently guided to the light distribution lens, the illuminance of the subject can be increased, and the reflecting member can be provided.
  • This has the advantage that the size of the device can be reduced, and the imaging device can be made thinner and smaller.
  • a plurality of pairs of the light emitting diode and the reflection member are provided in the imaging device according to the first aspect. Structure.
  • the illuminance of the subject can be increased and illumination with less unevenness can be obtained.
  • the reflecting member or the light distribution lens is fixed to the light emitting diode.
  • the reflecting member has a structure formed of a mirror.
  • the imaging device it is possible to provide not only the same effect as the imaging device according to the first aspect but also a light device which has excellent reflection efficiency of light emitted from the light emitting diode and has a high illuminance of the subject.
  • the reflecting member has a structure including a prism body.
  • the imaging device according to the first aspect not only the same effects as those of the imaging device according to the first aspect are exerted, but also the number of components can be reduced, the compactness can be further improved, and the imaging device can be made thinner.
  • the writing device in an imaging device including an imaging device for imaging a subject and a lighting device for illuminating the subject, includes a key operation or control of the imaging device. And a mirror body having a mirror surface having a light distribution function of bending an optical axis of light emitted from the light emitting diode in an imaging direction by reflection and distributing light to an imaging range.
  • a structure is provided in which the light emitting diode and the mirror unit are paired and a plurality of pairs are provided.
  • the mirror is integrated with the light emitting diode.
  • the light distribution lens has a structure also used as a protective cover for protecting the light device. .
  • a light-transmitting protective cover for protecting the light device is provided, and the protective cover is provided in an imaging range. It has a light distribution function of distributing light.
  • the protective cover is formed as a component that produces a visual effect of the imaging device or a protective cover for the component. The structure is made.
  • the protective cover has a structure formed as a protective cover of a display device provided in the imaging device. ing.
  • the imaging device in the imaging device according to the first aspect, includes a light-transmitting protective cover that protects the light device;
  • the light-emitting device has a structure including a light diffusion portion that is located on the light passage path between the light-emitting diode and the light-emitting diode and that diffuses light.
  • the light diffusion unit has a structure formed on one surface or a plurality of surfaces constituting a component of the light device. ing.
  • the imaging device in the imaging device according to the first aspect, includes a light-transmitting protective cover that protects the light device; And a light diffusion sheet for diffusing light, which is located on the light passage between the light emitting diode and the light emitting diode.
  • a surface of the light diffusion sheet that diffuses light is provided on an object side in the light passage path. It has a structure.
  • a surface of the light diffusion sheet for diffusing light is provided on a side of the light emitting diode in the light passage path. It has a structure that is.
  • the surface of the light diffusion sheet that diffuses light is also on the light-emitting diode side in the light passage path.
  • the structure is provided.
  • the light diffusion unit has a light diffusion angle at a peripheral portion of the light emitting diode near a light axis near the optical axis.
  • the structure is formed to be small.
  • the amount of light diffusion outside the imaging range is reduced because the amount of light diffusion in the peripheral portion is reduced. It is possible to increase the amount of light in the imaging range and illuminate the subject more brightly.
  • the light diffusion sheet diffuses light more in a peripheral portion than in a vicinity of the optical axis of the light emitting diode.
  • the structure is such that the angle is reduced. According to this aspect, not only the same effect as the imaging device according to the seventeenth aspect is exerted, but also the amount of light diffusion around the periphery is reduced, so that the amount of light diffused outside the imaging range is reduced. It is possible to increase the amount of light in the imaging range and illuminate the subject more brightly.
  • the imaging device includes a light-transmitting protective cover that protects the light device, and is located on the light passage between the protective cover and the light-emitting diode, and emits light from the object side. It has a structure in which the light transmittance to the diode side is smaller than the light transmittance from the light emitting diode side to the object side.
  • the light distribution lens is provided on both the subject side and the light emitting diode side of the reflection member. It has been.
  • the mirror-integrated object side, the light emitting diode side, or both the object side and the light emitting diode side are provided.
  • the structure is provided with a light distribution lens having a light distribution function.
  • each lens The refractive index can be reduced, and each lens can be formed thinner, so that it can be made thinner and smaller, and there is an advantage that a more optimal light distribution design can be easily performed.
  • the light distribution lens is integrated with the mirror body.
  • the imaging device In a twenty-seventh aspect of the imaging device according to the present invention, the imaging device according to the fifteenth aspect In the above, the light diffusing surface of the light diffusing portion has a structure having irregularities.
  • a surface of the light diffusion sheet for diffusing light has a structure having an uneven shape.
  • FIG. 1 is an external front view of a camera-equipped mobile phone according to the present invention.
  • FIG. 2 is a schematic explanatory diagram of the writing device according to the first embodiment of the present invention.
  • FIG. 3 is a schematic explanatory diagram of a writing device according to a second embodiment of the present invention.
  • FIG. 4 is a schematic explanatory diagram of a light device according to a third embodiment of the present invention.
  • FIG. 5 is a schematic explanatory diagram of a light device according to a fourth embodiment of the present invention.
  • FIG. 6 is a schematic explanatory diagram of a writing device according to a fifth embodiment of the present invention.
  • FIG. 7 is a schematic explanatory diagram of a writing device according to a sixth embodiment of the present invention.
  • FIG. 8 is a schematic explanatory diagram of a writing device according to a seventh embodiment of the present invention.
  • FIG. 9 is a schematic explanatory diagram of a light device according to an eighth embodiment of the present invention.
  • FIG. 10 is a schematic explanatory diagram of a writing device according to a ninth embodiment of the present invention.
  • FIG. 11 is a schematic explanatory diagram of a writing device according to an embodiment 10 of the present invention.
  • C FIG. 12 is a schematic explanatory diagram of a writing device according to an embodiment 11 of the present invention.
  • FIG. 13 is a schematic explanatory diagram of a writing device according to the embodiment 12 of the present invention.
  • C FIG. 14 is a schematic explanatory diagram of a writing device according to the embodiment 13 of the present invention.
  • FIG. 15 is a schematic explanatory diagram of the writing device according to the 14th embodiment of the present invention.
  • C FIG. 16 is a diagram showing the relationship between the image height and the illuminance ratio.
  • FIG. 17 is an explanatory diagram of the image height.
  • FIG. 18 is a schematic explanatory diagram of a writing device according to the 15th embodiment of the present invention.
  • C FIG. 19 is a schematic explanatory diagram of a writing device according to the 16th embodiment of the present invention.
  • 2 c
  • Figure 2 1 is a schematic illustration of a line winding device according to Embodiment 1 7 of the present invention is a schematic illustration of a line winding device according to Embodiment 1 eighth embodiment of the present invention
  • FIG. 22 is a schematic explanatory view of a writing apparatus according to the embodiment 19 of the present invention.
  • C FIG. 23 is a schematic explanatory view of a writing apparatus according to the embodiment 20 of the present invention.
  • FIG. 24 is a schematic explanatory view of a light device according to the embodiment 21 of the present invention.
  • C FIG. 25 is an enlarged sectional view of a light diffusion sheet according to the embodiment 22 of the present invention. .
  • FIG. 26 is an enlarged sectional view of a modified example of the light diffusion sheet.
  • FIG. 27 is an enlarged cross-sectional view of a modification of the light diffusion sheet.
  • FIG. 28 is an enlarged cross-sectional view of a modification of the light diffusion sheet.
  • FIG. 29 is a schematic explanatory view of a light device according to Embodiment 23 of the present invention.
  • C FIG. 30 is an enlarged sectional view of the light diffusion sheet.
  • FIG. 31 is a schematic explanatory view of a light device according to Embodiment 24 of the present invention.
  • C FIG. 32 is an enlarged sectional view of the light diffusion sheet.
  • FIG. 33 is an enlarged sectional view of a modified example of the light diffusion sheet.
  • FIG. 34 is a schematic explanatory view of a writing device according to the embodiment 25 of the present invention.
  • C FIG. 35 is an external perspective view of a camera-equipped mobile phone according to the embodiment.
  • FIG. 36 is a schematic explanatory diagram of a modified example of the writing device.
  • FIG. 37 is a schematic explanatory diagram of a writing device according to Embodiment 26 of the present invention c .
  • FIG. 38 is a schematic explanatory diagram of a writing device according to Embodiment 27 of the present invention c
  • FIG. 39 is a schematic explanatory diagram of a modified example of the writing device.
  • FIG. 40 is a schematic explanatory diagram of a light device according to Embodiment 28 of the present invention.
  • C FIG. 41 is an exploded perspective view showing a schematic structure of a conventional example.
  • FIG. 1 shows a mobile phone with a camera 20 as an example of an imaging device according to the first embodiment of the present invention.
  • the camera-equipped mobile phone 20 includes a mobile phone housing 21 configured in a vertically long box shape, and a rectangular display for displaying communication information and images above a central portion on the front of the mobile phone housing 21.
  • an electronic camera 23 as an image pickup device for picking up an image of the subject and a light device 2 for illuminating the subject are arranged in a row. This effectively prevents an unnatural shadow from occurring in the subject when shooting with the light device 24 emitting light.
  • the arrangement of the light device 24 is not limited at all beside the electronic camera 23.
  • Parts that produce visual effects for the 20 users for example, a ring cover, a clock, a protective cover for decorative parts, etc., or a part integral with the protective cover of the liquid crystal display 22. It may be formed as.
  • an operation button group 26 for performing various operations is provided at a central portion or a lower portion of the mobile phone housing 21.
  • a communication antenna 27 is provided on the upper surface of the housing 21 c.
  • a speaker and a microphone for talking are provided at appropriate positions on the upper and lower parts of the mobile phone housing 21.
  • the light device 24 is connected to and arranged on an electronic circuit board 30 and is an illuminance sensor that measures an appropriate key operation in the operation button group 26 or an output signal of a captured image and illuminance.
  • a light emitting diode 31 LED
  • a reflecting surface that has been subjected to a mirror surface treatment to bend the optical axis L of light emitted from the light emitting diode 31 in the imaging direction. Reflecting member consisting of a reflecting plate etc.
  • the light emitting diode 31 for example, a light emitting diode that emits light with high luminance and emits white light may be used.
  • the protective cover 25 may have a structure in which a processing such as a Fresnel lens or a lenticular lens having a light distribution function of distributing light to an imaging range is performed.
  • the present embodiment is configured as described above, and can be used as a lighting light by turning on / off a key operation, or by outputting an output signal of a captured image or an output signal of an illuminance sensor for measuring illuminance.
  • the light emitting diode 31 that emits light according to the corresponding control is adopted, and the optical path leading to the illumination is bent by the reflective member 32, so that the size of the light device 24 can be reduced. . Therefore, the thickness of the mobile phone housing 21 can be effectively reduced, and the adoption of a small and constantly lit light makes it possible to shoot a subject not only in a still image but also in a moving image in a dark place without any problem.
  • a reflecting member 32 that bends the optical axis L is disposed between the light emitting diode 31 and the light distribution lens 33, so that the light emitting diode 31 and the light distribution lens can be reduced in thickness.
  • the distance from the protection cover 3 or the protection cover 25 can be ensured, and the internal components such as the light emitting diode 31 cannot be effectively viewed from the outside.
  • the protective cover 25 is provided with the light diffusing portion 25a, there is an advantage that the increase in the number of components can be suppressed and the internal components can be made less visible from the outside. .
  • the light emitting diode 31 is employed as a light source for illumination, there is an advantage that power consumption during light emission is small and a calorific value is also small. Therefore, it is possible to dispose resin parts such as the reflection member 32 and the light distribution lens 33 near, and from this point, it is possible to effectively reduce the thickness and size of the mobile phone housing 21.
  • the light distribution function of the light distribution lens 33 allows the light emitted from the light emitting diode 31 to be efficiently radiated to the subject. Furthermore, when the protective cover 25 is formed as a component that produces a visual effect for the user of the camera-equipped mobile phone 20, a component that produces a visual effect (a liquid crystal display 22, a decorative decorative component, etc.) In other words, when the protective cover is formed as a protective cover, the parts can be shared, the number of parts can be reduced, and the size, weight, thickness, and cost can be reduced.
  • the light distribution lens 33 may have a light distribution function such that light emitted from the light emitting diode 31 is collected within the imaging range of the electronic camera 23, such as a Fresnel lens and a cylindrical lens.
  • the type of lens does not matter.
  • the light diffusing portion 25a is formed on the inner surface side of the protective cover 25
  • it may be formed on the outer surface side of the protective cover 25 as well.
  • the components constituting the light device 24 such as the reflection member 32 and the light distribution lens 33 located on the light passage between the light emitting diode 31 and the protective cover 25 are shown.
  • a light diffusion portion 25a may be formed on the surface, and the same effect can be obtained.
  • a structure in which the light diffusing portions 25a are formed on a plurality of surfaces of the components constituting the light device 24 may be adopted.
  • FIG. 3 shows a portion of the writing device 24 of the camera-equipped mobile phone 20 as an example of the imaging device according to the second embodiment of the present invention, and the same components as those in the first embodiment have the same reference numerals. And description thereof is omitted.
  • the structure is such that the reflecting member 32 is directly attached and fixed to the light emitting diode 31. It is also possible to directly attach and fix both components of the reflection member 32 and the light distribution lens 33 to the light emitting diode 31.
  • the reflection member 32 may be attached to the light emitting diode 31 by a fixing method such as fixing or bonding with a mounting bracket or a pin fitting, or by a suitable method such as when the light emitting diode 31 is integrally formed. I just need.
  • both parts of the reflecting member 32 and the light distribution lens 33 are mounted on the light emitting device.
  • the same method may be adopted when directly attaching and fixing to the diode 31. In this case, misalignment between the three parties when the camera-equipped mobile phone is assembled can be effectively prevented.
  • FIG. 4 shows a portion of the writing device 24 of the camera-equipped mobile phone 20 as an example of the imaging device according to the third embodiment of the present invention.
  • the same components as those in the first embodiment have the same reference numerals. And description thereof is omitted.
  • the light distribution lens 33 is provided between the light emitting diode 31 and the reflection member 32. Accordingly, the light emitted from the light emitting diode 31 is condensed by the light distribution lens 33, guided to the reflection member 32, reflected by the reflection member 32, and distributed to the imaging range. .
  • R in the drawing indicates a light beam emitted from the light emitting diode 31.
  • the light distribution lens 33 is arranged between the light emitting diode 31 and the reflection member 32, and not only the same effect as in the first embodiment is exerted, but also Since the light distribution lens 33 is disposed immediately after the light emitted from the light emitting diode 31, the light of the light emitting diode 31 can be efficiently guided to the light distribution lens 33, and the illuminance of the subject can be increased.
  • the size of the reflecting member 32 can be reduced, and the camera-equipped mobile phone 20 can be made thinner and more compact. There is an advantage that can be achieved.
  • FIG. 5 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the fourth embodiment of the present invention, and the same components as those in the first embodiment have the same reference numerals. And description thereof is omitted.
  • a mirror unit 35 having a mirror surface 35 a made of a flat mirror is adopted, and the light emitting diode 3 is used.
  • the optical axis L of 1 is bent 90 degrees by reflection at the mirror surface 35a. Therefore, according to the present embodiment, only the same effect as in Embodiment 1 can be obtained.
  • the mirror surface 35a of the mirror unit 35 reflects light emitted from the light emitting diode 31. Thus, it is possible to provide a light device 24 having excellent reflection efficiency and bright illuminance of the subject. It should be noted that a similar effect can be obtained by employing such a mirror body 35 as the reflecting member 32 in the third embodiment.
  • FIG. 6 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the fifth embodiment of the present invention, and the same components as those in the first embodiment have the same reference numerals. And description thereof is omitted.
  • a prism body 37 having an isosceles triangular shape with a right angle to the cross section is adopted, and the optical axis of the light emitting diode 31 is adopted.
  • L is reflected by one side surface of the prism 37 and is bent 90 degrees. Therefore, according to the present embodiment, the same effects as those of the first embodiment can be obtained.
  • FIG. 7 shows a part of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to a sixth embodiment of the present invention. And description thereof is omitted.
  • the light distribution lens 33 in the fifth embodiment has a structure in which the light distribution lens 33 is joined and integrated to one side surface of the prism body 37.
  • the present embodiment not only the same effects as in the fifth embodiment are exerted, but also the number of components can be reduced by integrating the light distribution lens 33 and the prism 37, and the number of components can be reduced. This is advantageous in that it can be made compact and the camera-equipped mobile phone 20 can be made thinner.
  • the light distribution lens 33 and the prism 37 may be integrated by integral processing. After processing the light distribution lens 33 and the prism 37 as separate parts, they are integrated by joining. It is good also as a structure which changes.
  • FIG. 8 is a diagram illustrating a portable device with a camera as an example of the imaging device according to the seventh embodiment of the present invention. This figure shows a portion of the writing device 24 of the mobile phone 20, and the same components as those of the third embodiment are denoted by the same reference numerals, and description thereof will be omitted.
  • the same prism member 37 as in the fifth embodiment is employed as the reflecting member 32 in the third embodiment, and furthermore, a light distribution lens as in the sixth embodiment. 33 and the prism body 37 are integrated.
  • Embodiment 3 not only the same effects as in Embodiment 3 are exhibited, but also the number of components can be reduced by integrating the light distribution lens 33 and the prism body 37, and the number of parts can be reduced. This is advantageous in that it can be made compact and the camera-equipped mobile phone 20 can be made thinner.
  • the light distribution lens 33 and the prism 37 may be integrated by integral processing. After processing the light distribution lens 33 and the prism 37 as separate parts, they are integrated by joining. It is good also as a structure which changes.
  • FIG. 9 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the eighth embodiment of the present invention.
  • the same components as those in the first embodiment have the same reference numerals. And description thereof is omitted.
  • a structure is adopted in which a mirror body 39 having a mirror surface 39a formed of a concave mirror is employed instead of the reflecting member 32 in the first embodiment.
  • the mirror body 39 has a light distribution function of bending the optical axis L of the light emitted from the light emitting diode 31 by 90 degrees in the imaging direction at the mirror surface 39a and distributing the light to the imaging range.
  • the structure is provided.
  • the mirror unit 39 has a lens effect of exhibiting a light distribution function by the concave shape of the mirror surface 39a, the light distribution lens 33 in the first embodiment is unnecessary. .
  • Embodiment 1 not only the same effects as in Embodiment 1 are achieved, but also the structure in which the light emitted from the light-emitting diode 31 is reflected by the mirror surface 39a of the mirror body 39, It is possible to provide a light device 24 having excellent reflection efficiency and a bright subject illuminance.
  • the mirror unit 39 itself has a lens effect of exerting a light distribution function, the light distribution lens 33 is not required, and the number of parts can be reduced. There is also the advantage that the thickness and size can be reduced.
  • the shape of the mirror surface 39a in the mirror unit 39 is appropriately determined so that a predetermined light distribution function can be exhibited according to the mutual distance between the light emitting diode 31 and the mirror surface 39a. Should be adopted.
  • the light distribution lens 33 of Embodiment 1 and / or Embodiment 2 may be combined with the light distribution effect of the mirror body 39 to have a structure capable of exhibiting a predetermined light distribution function.
  • the bending ratio of each of the light distribution lens 33 and the entire surface 39a of the mirror can be reduced, so that the light distribution lens 33 and the integrated mirror 39 can be formed thinner, and the size can be reduced.
  • an optimum light distribution design can be easily made.
  • FIG. 10 shows a light device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the ninth embodiment of the present invention. And a description thereof will be omitted.
  • the light emitting diode 31 and the reflecting member 32 in the first embodiment are paired, and two pairs are symmetrically arranged.
  • the two light emitting diodes 31 are arranged facing each other on the electronic circuit board 30 so that the light from the two light emitting diodes 31 is directed inward, and between the two light emitting diodes 31.
  • Each of the two reflection members 32 that bends each optical axis L in the imaging direction is disposed.
  • the light distribution lenses 33 for distributing the light reflected by the respective reflection members 32 are also arranged in a corresponding manner.
  • Embodiment 1 not only the same effects as in Embodiment 1 are exhibited, but also there is an advantage that the illuminance of the subject can be increased by employing a plurality of light emitting diodes 31.
  • the left and right directions with respect to the optical axis L of the light emitting diode 31 board It is easy to distribute light symmetrically (in the direction horizontal to 30), but light distribution in the vertical direction (the direction perpendicular to the substrate 30) with respect to the optical axis is accompanied by the thinning of the light emitting diode 31.
  • some light It is difficult to distribute light symmetrically because the light is reflected on the electronic circuit board 30 or the like.
  • the asymmetric light distribution as described above is achieved. Can be made symmetrical, and illumination with less unevenness can be obtained.
  • Embodiment 10 Although a structure in which two pairs of the light emitting diode 31 and the reflecting member 32 are provided is shown, three or more pairs may be provided, and the number in the present embodiment is not limited at all. Embodiment 10
  • FIG. 11 shows a light device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the tenth embodiment of the present invention, and has the same components as in the ninth embodiment.
  • the reference numerals are attached and the description is omitted.
  • the two reflecting members 32 are disposed at the center and the light emitting diodes 31 are disposed on both sides, respectively.
  • the two light emitting diodes 31 are arranged back to back, and the reflecting members 32 are arranged on both sides.
  • the light distribution lens 33 and the protective cover 25 are arranged corresponding to the position of the optical axis L of the light reflected by each reflection member 32.
  • Embodiment 1 1 is a diagrammatic representation of Embodiment 1 1
  • FIG. 12 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to Embodiment 11 of the present invention, and has the same components as in Embodiment 9 described above.
  • the reference numerals are attached and the description is omitted.
  • the light distribution lens 33 is arranged for each optical system of each light emitting diode 31.
  • each light emitting diode 31 is provided.
  • the optical systems of the light sources 31 are collectively distributed by a single light distribution lens 33.
  • Embodiment 1 2.
  • FIG. 13 is a diagram showing an example of an imaging device according to Embodiment 12 of the present invention. This shows the portion of the writing device 24 of the portable telephone 20 in which the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.
  • the light distribution lens 33 has a structure in which the light distribution lens 33 also serves as a protection force bar 25 for protecting the light device 24. That is, as shown in FIG. 1, a light distribution for distributing light to an imaging range is provided in a portion corresponding to the window opening 2 la of the mobile phone housing 21 in the protective cover 25 for protecting the surface of the liquid crystal display 22. It has a structure in which a light distribution lens 33 made of a Fresnel lens, a lenticular lens or the like having an optical function is formed.
  • the protective cover 25 is formed as a component that produces a visual effect, or protects a component that produces a visual effect (a liquid crystal display 22, a decorative component, etc.). It may be formed as a cover.
  • Embodiment 1 not only the same effects as in Embodiment 1 can be obtained, but also the structure in which the light distribution lens 33 and the protection cover 25 are shared, and the number of parts can be reduced. At the same time, there is an advantage that the thickness can be reduced and the size can be reduced by the reduction. Embodiment 1 3.
  • FIG. 14 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to Embodiment 13 of the present invention, and the same components as those in Embodiment 1 are the same.
  • the reference numerals are attached and the description is omitted.
  • the portion corresponding to the window opening 21a in the protection cover 25 has a light distribution function of distributing light to the imaging range, like the light distribution lens 33. It has a lens-shaped structure such as a Fresnel lens or a lenticular lens.
  • the protective cover 25 is formed as a component that produces a visual effect, or is formed as a protective power cover for a component that produces a visual effect (such as the liquid crystal display 22). May be.
  • Embodiment 1 not only the same effects as in Embodiment 1 are achieved, but also the light distribution effects of the light distribution lens 33 and the protective cover 25 are combined.
  • This has the advantage that the refractive index can be reduced, the lens can be formed thinner, and the thickness and size can be reduced, and a more optimal light distribution design can be easily achieved. Note that the same configuration can be adopted for the protection cover 25 in the second to eleventh embodiments, and the same effect can be obtained.
  • Embodiment 1 4.
  • FIG. 15 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the embodiment 14 of the present invention.
  • the reference numerals are attached and the description is omitted.
  • light is diffused between the light distribution lens 33 and the protection cover 25 located on the light passage path between the protection cover 25 and the light emitting diode 31.
  • a light diffusion sheet 40 made of a transparent plate material, a film body or the like. An uneven shape or the like is formed on the surface of the light diffusion sheet 40 on the subject side in the light passage, and the light diffusion sheet 40a is formed as a diffusion surface 40a for diffusing the light.
  • the surface on the first side is a flat smooth surface 40b.
  • the same effect as in the first embodiment can be obtained, and the external light that has entered through the protective cover 25 is relatively large on the diffusion surface 40a of the light diffusion sheet 40. Is reflected, and the remaining light passes through the light diffusion sheet 40. Therefore, the amount of external light reflected by the electronic circuit board 30 or the like also decreases. External light is reflected by the electronic circuit board 30 and the like, and light reflected to the outside of the mobile phone 20 is diffused again by the diffusion surface 40a. Thus, the light-emitting diodes 31 and the electronic circuit board 30 and the like inside are hard to see. Therefore, when the light emitting diode 31 is turned off, there is also an effect that it is difficult for the internal components such as the light emitting diode 31 and the like to be effectively viewed from the outside.
  • the light diffusion sheet 40 is disposed between the protective cover 25 and the light distribution lens 33 because the light diffusion sheet 40 is smaller than the light distribution lens.
  • the light distribution lens 33 it may be provided between the light distribution lens 33 and the reflection member 32.
  • the diffusion surface 40a of the light diffusion sheet 40 is suitable for forming a large number of fine irregularities on the surface, forming a large number of fine convex lens shapes, and forming a large number of fine linear grooves. In such a case, it is conceivable to form a large number of fine Fresnel lens-shaped concentric grooves, or to arrange a large number of fine bead-shaped transparent spheres on the surface.
  • Fig. 16 shows the relationship between the image height and the illuminance ratio by the light diffusion sheet 40.
  • the image height is defined as the image distance 100% at the position farthest from the center of the image to be captured, and It is shown as a ratio of distances.
  • the center P is 0% image height
  • the corner Q is 100% image height
  • R is the image height of 80%
  • the position S at the middle part in the height direction is the image height of 60%.
  • the illuminance ratio is expressed by (illuminance without diffusion surface) / (illuminance without diffusion surface). Therefore, it can be understood that the illuminance at the center can be kept higher when the diffusion surface 40a is provided on the subject side of the light diffusion sheet 40.
  • the diffusion surface 40a is provided on the light emitting diode 31 side, which is the light source side, the illuminance decrease at the center is large, but the illuminance decrease at the periphery is relatively small. Then, the same results as in this case were obtained when the diffusion surfaces 40a were provided on both sides of the light diffusion sheet 40.
  • the light diffuser sheet 40 in the light device 24, it is possible to effectively suppress the decrease in the illuminance around the center of the light source 24. At this time, the light emitting diode 31 By providing the diffusion surface 40a on the side, there is an advantage that the decrease in illuminance in the surroundings can be suppressed more effectively.
  • the structure in which the diffusion surface 40a is provided on the subject side of the light diffusion sheet 40 is shown.
  • the diffusion surface 40a of the light diffusion sheet 40 is shown. May be provided on the light-emitting diode 31 side in the light passage path.
  • the same advantage can be obtained when the diffusion surfaces 40a are provided on the object side of the light diffusion sheet 40 and on both sides of the light emitting diode 31.
  • the light diffusion sheet 40 having such a configuration can be similarly applied to the second to thirteenth embodiments, and the same effects can be obtained.
  • FIG. 18 shows a light device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the fifteenth embodiment of the present invention.
  • a light device 24 of a camera-equipped mobile phone 20 are denoted by the same reference numerals, and description thereof is omitted.
  • the diffusion surface 40a is formed such that the light diffusion angle is smaller in the peripheral portion than in the vicinity of the optical axis L. Structure.
  • the surface shape of the diffusion surface 40a of the light diffusion sheet 40 is uniform, but in the present embodiment, the uneven shape gradually increases from the optical axis L toward the peripheral portion. Or formed by changing step by step. Further, in the present embodiment, the concavo-convex shape can be formed by arranging fine spheres or forming a fine convex lens shape (molding with a polymer material or the like). Other configurations are the same as in Embodiment 14.
  • Embodiment 14 not only the same effects as in Embodiment 14 can be obtained, but also the light emitted from the light emitting diode 31 reaches the light diffusion sheet 40, and then becomes a light diffusion system.
  • G 40 The diffusion angle of light in the central part is larger than that of light by the diffusion surface 40a in the peripheral part, and the diffusion angle of light is smaller in the peripheral part.
  • the amount of light diffused out of the range can be reduced, the light amount in the imaging range can be increased, and the subject can be illuminated more brightly.
  • the light diffusion angle is smaller at the peripheral portion than at the vicinity of the optical axis L.
  • FIG. 19 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to Embodiment 16 of the present invention, and has the same components as those of Embodiment 14 above. Are denoted by the same reference numerals, and description thereof is omitted. That is, according to the present embodiment, instead of the light diffusion sheet 40 in the embodiment 14, the protection cover 2 located on the light passage path between the protection cover 25 and the light emitting diode 31 is used. Between the light distribution lens 5 and the light distribution lens 3, a sheet body 42 having a light transmission surface 42 a having a different light transmittance depending on the transmission direction, such as a half mirror film, is provided.
  • the light transmission surface 42 a has a light transmittance from the object side to the light emitting diode 31 side smaller than the light transmittance from the light emitting diode 31 side to the object side. It has a structure.
  • the same effect as in the first embodiment can be obtained, and light entering from the outside through the protective cover 25 is relatively attenuated when passing through the sheet body 42 ( (Dim). Therefore, light reflected by the electronic circuit board 30 and the like also decreases, and the reflected light hardly goes out of the mobile phone 20. Therefore, when the light emitting diode 31 is turned off, there is an effect that it is difficult to effectively see internal components such as the light emitting diode 31 from the outside.
  • the light emitting diode 31 when the light emitting diode 31 is lit, the light emitted from the light emitting diode 31 is not relatively attenuated by the sheet member 42, so that a good amount of light can be supplied to the subject.
  • the sheet body 42 is provided between the protective cover 25 and the light distribution lens 33, but between the light distribution lens 33 and the reflection member 32. It may be provided. Further, the surfaces having different light transmittances may be formed in some of the components of the light device 24.
  • FIG. 20 shows a write device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the first embodiment of the present invention, and has the same components as in the first embodiment.
  • the reference numerals are attached and the description is omitted.
  • the light distribution lens 33 is arranged on one side.
  • the object side of the reflection member 32 and the light emitting diode The light distribution lens 33 is arranged on both sides of the window 31.
  • Embodiment 1 not only the same effect as in Embodiment 1 is achieved, but also the light distribution effect of the pair of light distribution lenses 33 is combined, and the refractive index of each lens is reduced. It has the advantage that it can be made smaller, each lens can be made thinner, and it can be made thinner and smaller, and it is easier to design a more optimal light distribution.
  • FIG. 21 shows a light device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the eighteenth embodiment of the present invention.
  • the reference numerals are attached and the description is omitted.
  • the light distribution lens 33 in the first embodiment and the like is connected to the subject side of the mirror unit 39 in the light passing path from the light emitting diode 31 to the protective cover 25. And the light emitting diode 31 side.
  • Embodiment 8 not only the same effects as in Embodiment 8 are exhibited, but also the light distribution effect by the mirror surface 39a and the light distribution effect by the pair of light distribution lenses 33 are combined. Therefore, the refractive index of each lens can be reduced, and each lens can be formed thin, so that the thickness and the size can be reduced. In addition, there is an advantage that a more optimal light distribution design can be easily performed.
  • FIG. 22 shows the writing device 24 of the camera-equipped mobile phone 20 as an example of the imaging device according to the embodiment 19 of the present invention, and the same components as those of the embodiment 4 are the same.
  • the reference numerals are attached and the description is omitted.
  • the light distribution lens 33 in the fourth embodiment has a structure in which the light distribution lens 33 is joined and integrated with the side surface of the mirror integral 35.
  • Embodiment 4 not only the same effects as in Embodiment 4 can be obtained, but also the number of parts can be reduced and the compactness can be achieved by integrating the light distribution lens 33 and the mirror unit 35. This has the advantage that the camera-equipped mobile phone 20 can be made thinner.
  • the integration of the light distribution lens 33 and the mirror unit 35 can be performed by integral processing.
  • the light distribution lens 33 and the mirror body 35 may be separately processed, and then integrated by joining.
  • the light distribution lens 33 in the embodiment 18 may be joined and integrated with the mirror body 39, and the same effect can be obtained in this case.
  • Embodiment 20 is a diagrammatic representation of Embodiment 20.
  • FIG. 23 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the embodiment 20 of the present invention.
  • the reference numerals are attached and the description is omitted.
  • the mirror unit 39 of the eighth embodiment is directly attached and fixed to the light emitting diode 31.
  • the mirror unit 39 can be attached to the light emitting diode 31 by an appropriate method such as fixing or bonding by a mounting bracket or pin fitting, or when the light emitting diode 31 is integrally formed. .
  • Embodiment 2 1.
  • FIG. 24 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the embodiment 21 of the present invention, and has the same components as the embodiment 8 described above.
  • the reference numerals are attached and the description is omitted.
  • the light emitting diode 31 and the mirror body 39 of the eighth embodiment are paired, and two pairs are symmetrically arranged.
  • the two light emitting diodes 31 are arranged facing each other on the electronic circuit board 30 so that the light from both the light emitting diodes 31 faces inward, and between the two light emitting diodes 31.
  • Each of the mirrors 39 for bending each optical axis L in the imaging direction is arranged.
  • the light emitting diode 31 has the reflecting member 32, A structure in which the integral members 35 and 39, the prism body 37 and / or the light distribution lens 33 are directly mounted, and fixed. In this case, as in the second embodiment, misalignment between them can be effectively prevented.
  • Embodiments 2 to 8 and Embodiments 12 to 19 as in Embodiments 9 to 11, the light emitting diode 31 and the reflecting member 32, and the mirror
  • the body 35, the prism body 37, or the like may be used as a pair, and a structure including a plurality of pairs may be provided, and the same effects as in Embodiments 9 to 11 can be obtained.
  • the light emitting diode 31 is directly connected to the reflecting member 32, the mirrors 35, 39, the prism 37 or Z, and the light distribution lens 33. It is good also as a structure which attaches and fixes.
  • the structure in which the electronic camera 23 and the lighting device 24 are provided on the same surface as the liquid crystal display 22 is shown, a structure in which the electronic camera 23 is provided on the back surface side of the liquid crystal display 22 may be adopted.
  • Embodiment 14 described above it has been described that a number of fine bead-shaped transparent spheres may be arranged on the surface of the diffusion surface 40a of the light diffusion sheet 40.
  • the relationship between the image height and the illuminance ratio when the diffusion surface 40a of the light diffusion sheet 40 is directed toward the subject and when the diffusion surface 40a is directed toward the light source is described. did.
  • the structure of the light diffusion sheet 40 will be described in detail, and the direction in which the diffusion surface 40a faces will also be described in detail.
  • FIG. 25, FIG. 26, FIG. 27, and FIG. 28 are cross-sectional views showing the configuration of the light diffusion sheet 40 according to Embodiment 22 of the present invention.
  • FIG. 1 is used for the overall configuration of the camera-equipped mobile phone device 1 of the present embodiment 22 as in the other embodiments.
  • the light diffusion sheet 40 of the present embodiment 22 shown in FIG. 25 includes a diffusion surface 40 a and a smooth surface 40 Ob, and the diffusion surface 40 a is a bead-shaped transparent sphere 40. It consists of c and binder 40 d. In addition, since a part of the bead-shaped transparent sphere 40c is exposed from the surface of the diffusion surface 40a, the surface of the diffusion surface 40a is formed with irregularities. The light diffusing action of the diffusing surface 40a is caused by a large refractive index difference between air and the bead-shaped transparent sphere 40c.
  • the bead-shaped transparent sphere 40 c is largely exposed from the diffusion surface 40 a, and if the degree of surface irregularity increases, the area where the bead-shaped transparent sphere 40 c comes into contact with air increases, so that light The diffusion effect is increased, and the light emitting diode 31 is difficult to see. Conversely, when the degree of the irregularities is small and the surface becomes more smooth, the area where the bead-shaped transparent sphere 40 c and air come into contact with each other becomes smaller, so that the light diffusion action becomes smaller and the light emitting diode 3 1 becomes easier to see.
  • the bead-shaped transparent sphere 40 c is made of glass, acrylic resin, styrene resin, silicon resin, etc., for example, acrylic, acrylonitrile, polyurethane, polyvinyl chloride, polystyrene, polyacrylonitrile, polyamide, silicon rubber, etc. Used.
  • the shape may be cubic, needle-like, rod-like, spindle-like, plate-like, scale-like, or fibrous, in addition to spheres.
  • a spherical shape or a spherical shape close to a true sphere is most preferable. This is because, when the shape is spherical, each spherical particle acts as a minute lens, so that the light diffusing action becomes large.
  • the average particle diameter is from 1 ⁇ m to 50 / m.
  • Acrylic resin, polyurethane, polyester, fluorine resin, silicone resin, polyamide imide, epoxy resin, or the like is used as the binder 40d.
  • the thickness of the binder 40 d is related to the particle size of the bead-shaped transparent sphere 40 c, but is preferably 1 to 30 zm.
  • the smooth surface 40b which is the base material of the light diffusion sheet 40
  • an acrylic resin, a styrene resin, a polycarbonate, a vinyl chloride resin, or the like is used for the smooth surface 40b.
  • the thickness of the smooth surface 4Ob is not particularly limited, but is preferably about 50 / m to 20O ⁇ m in consideration of workability and the like when producing the light diffusion sheet 40.
  • FIG. 16 shows the case where the diffusion surface 40 a of the light diffusion sheet 40 is the object side as described in the embodiment 14 and the case where the diffusion surface 40 a is the light source (light emitting diode 32) side.
  • FIG. 7 is a diagram showing the relationship between the image height (%: horizontal axis) and the illuminance ratio (%: vertical axis) in the case of FIG.
  • the solid line in Fig. 16 indicates the case where the diffusion surface is on the subject side, and the transmittance of the light emitted from the light emitting diode 31 through the light diffusion sheet 40 does not decrease much near the center, but decreases extremely in the periphery. It indicates that Conversely, the broken line in FIG.
  • the light intensity of a light using a light emitting diode is much smaller than the light intensity of a light using a xenon tube or the like. Therefore, when capturing an image using a camera having a low light-receiving sensitivity and a light-emitting diode having a small light amount, the diffusion surface 40a of the light diffusion sheet 40 must be placed on the object side in order to secure an absolute light amount. It is placed in front of the light emitting diode 31 and the light emitted from the light device 24 is If the subject is photographed under the distribution of the illuminance ratio as shown by the line, a good image can be obtained.
  • Such a camera with low power consumption is more suitable for capturing a moving image than a still image.
  • the number of lenses attached to the camera must be increased. Design must be done.
  • the entire camera including the lens cannot be made large.
  • the light diffusing surface 40a of the light diffusing sheet 40 is arranged in front of the light emitting diode 310 facing the subject side, and the light emitted from the light 24 is emitted.
  • the subject is photographed under the distribution of the illuminance ratio as shown by the solid line in FIG.
  • the periphery of the image becomes very dark compared to the center.
  • a camera having high light receiving sensitivity may be used. Since a camera with high light-receiving sensitivity can capture images even with a small amount of light, the distribution of the illuminance ratio is more important than the absolute amount of light. Therefore, when such a camera is used, the light diffusing surface 40a of the light diffusing sheet 40 is arranged on the front surface of the light emitting diode 31 with the light diffusing surface 40a facing the light source side. A good image can be obtained if the subject is photographed under the distribution of the illuminance ratio as shown by the broken line in FIG. By the way, cameras with high light receiving sensitivity tend to consume more power.
  • the diffusion surface 40a of the light diffusion sheet 40 faces the subject side or the light source side depends not only on the performance and specifications of the light distribution lens as described in Embodiment 14 but also on the light distribution lens. It may be selected according to the specifications of the camera. Of course, the light distribution lens 33 can be omitted depending on the specifications and performance of the camera.
  • the light diffusing sheet 40 of the present embodiment 22 shown in FIG. 26 includes a diffusing surface 40a and a smooth surface 40b, and the diffusing surface 40a has a hollow bead shape. It is composed of a transparent sphere 40e and a binder 40d.
  • the difference from FIG. 25 is that the bead-shaped transparent sphere 40 e constituting the diffusion surface 40 a has a space inside and is hollow.
  • the bead-shaped transparent sphere 40c in Fig. 25 is air only on the surface of the diffusion surface 40a.
  • the light diffusion effect occurs only on the surface of the diffusion surface 40a, which is in contact with the surface.
  • the light diffusing sheet 40 of the present embodiment 22 shown in FIG. 27 is composed of a diffusing surface 40a and a smooth surface 40b, and the diffusing surface 40a is a bead-shaped transparent sphere. It consists of 4 O f and binder 40 d.
  • the difference from Fig. 25 is that the surface of the binder 40d between the bead-shaped transparent spheres 40f is formed into wavy irregularities.c
  • the surface of the binder 40d is wavy.
  • the binder 40d also has a light diffusing action, and the light diffusing action on the diffusing surface 40a is further increased.
  • the light diffusion sheet 40 of the present embodiment 22 shown in FIG. 28 includes a diffusion surface 40a and a smooth surface 40b, and the diffusion surface 40a is a bead-shaped transparent sphere 4. It consists of 0 g, a binder 40 d and bubbles 40 h.
  • the difference from FIG. 25 is that bubbles 40 h are mixed in the diffusion surface 40 a. Since the refractive index difference between the bubble 40 h and the binder 40 d is larger than the refractive index difference between the bead-shaped transparent sphere 40 g and the binder 40 d, the bubble 40 h When mixed into the diffusion surface 40a, the light diffusion action becomes greater than when there is no bubble 40h.
  • a pigment may be inserted instead of bubbles 40 h.
  • the pigment for example, titanium oxide, zinc oxide, lead carbonate, barium sulfide, calcium carbonate and the like are used.
  • the pigment may be put into 40 g of a bead-shaped transparent sphere. When the pigment is mixed, the light transmittance is reduced, but the effect of making the light emitting diode 31 difficult to visually recognize is enhanced.
  • the surface of the diffusion surface 40a is formed into irregularities because of the beads-like transparent spheres 40c, 40e, 40f, and 40g. Limited to Instead, a structure may be used in which the surface of the diffusion surface 40a is formed unevenly by the binder 40d.
  • Embodiment 23 described below a structure of a light diffusing sheet different from that of Embodiment 14 will be described.
  • FIG. 29 is a schematic explanatory diagram showing a configuration of a writing device 24 according to Embodiment 23 of the present invention. Note that the overall configuration of the camera-equipped mobile phone device 1 of the present embodiment 23 is also the same as in the other embodiments using FIG.
  • Embodiment 23 The difference between Embodiment 23 and Embodiment 14 is that the surface of the diffusion surface 45a of the light diffusion sheet 45 of the present embodiment is not uneven but smooth. That is, as shown in FIG. 30, the light diffusion sheet 45 is composed of a diffusion surface 45 a and a smooth surface 45 b, and the diffusion surface 45 a is composed of bubbles or pigments 45 c and a binder 45. d.
  • the surface of the diffusion surface 40a is formed with irregularities.
  • bubbles or pigments 45c are mixed into the diffusion surface 45a to diffuse the air. This is a smooth surface of the surface 45a.
  • the other configuration is the same as that of Embodiment 14. Instead of bubbles or pigments 45c, hollow bead-shaped transparent spheres may be mixed into the diffusion surface 45a.
  • the surface of the diffusion surface 45a is not uneven. It may be smooth.
  • Embodiment 23 described above a structure of the light diffusion sheet different from that of Embodiment 14 has been described.
  • Embodiment 24 described below further describes a structure of a light diffusion sheet different from that of Embodiment 23.
  • FIG. 31 is a schematic explanatory diagram showing a configuration of a writing device 24 according to Embodiment 24 of the present invention.
  • the overall configuration of the camera-equipped mobile phone device 1 of the present embodiment 24 is also FIG. 1 is used as in the other embodiments.
  • Embodiment 24 and Embodiment 23 The difference between Embodiment 24 and Embodiment 23 is that the light diffusion sheet 46 of the present embodiment is composed of only the base material.
  • the light diffusion sheet 45 can be changed to the diffusion surface 4.
  • bubbles or pigments 46a may be mixed into the inside of the base material 46b to make the light emitting diode 31 difficult to see.
  • bubbles or pigments 46a hollow bead-shaped transparent spheres may be mixed into the light diffusion sheet 46.
  • FIG. 33 if air bubbles, pigments 46a, and transparent spheres in the form of hollow beads are mixed into the light diffusion sheet 46, and if the light diffusion action can be ensured, the light diffusion sheet 46 The surface may be smooth.
  • the surface of the light diffusion sheet 46 is made uneven so that the light diffusion action can be secured, or bubbles or pigments 46 a are mixed into the light diffusion sheet 46, and the light emitting diode 31 is formed. If it is difficult to see the light and the light transmittance can be ensured, it is not necessary to configure the light diffusion sheet 46 with two layers, and the structure can be simplified.
  • the structure of the light diffusion sheets 40, 45, and 46 may be adopted as the structure of the protective cover 25.
  • the protective cover 25 exerts the function of the light diffusion sheets 40, 45, and 46, it is possible to achieve dual use, and the light diffusion sheets 40, 45, and 46 need not be provided. .
  • FIG. 34 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to a second embodiment 25 of the present invention, and has the same components as the first embodiment.
  • the reference numerals are attached and the description is omitted.
  • the structure in which the reflecting member 32 in the first embodiment bends the optical axis L of the light emitted from the light emitting diode 31 by 90 degrees and reflects the light is 0%. It is structured to bend and reflect at angles other than degrees.
  • the mobile phone 20 in FIG. 1 includes a mobile phone housing 21 configured in a vertically long box shape.
  • the electronic camera 23 and the light device 24 must always be close to each other. This is not the case, and if the electronic camera 23 and the lighting device 24 are There is a case.
  • the mobile phone 20 of FIG. 35 has a hinge 28 c at the center of two box-shaped mobile phone housings 28 a and 28 Tb so that it can be folded into two. It has a configured mobile phone housing 28.
  • the two housings 28a and 28b are not necessarily horizontal and have an angle of about 10 degrees.
  • the electronic camera 23 can be placed on any part of the mobile phone housings 28a and 28b and the hinge 28c, but the lighting device 24 is not necessarily the electronic camera 23 It is not necessarily arranged in the same housings 28a and 28b.
  • the reflecting member 32 bends and reflects the optical axis L of the light emitted from the light emitting diode 31 toward the imaging range of the electronic camera 23.
  • optical axis of the light distribution lens 3 3 is arranged so as to coincide with the optical axis L that has been reflected and bent, if the imaging range of the electronic camera 23 can be illuminated, there is no particular need to align the optical axis.
  • the optical axis of the light distribution lens 33 may be set to 0 vertically.
  • FIG. 36 shows a structure in which the optical axis L of the light emitted from the light emitting diode 31 is bent at an angle other than 90 degrees and reflected by the prism body 37.
  • the light distribution lens 33 is integrated with the prism body 37 and is arranged so as to match the optical axis L of the reflected and bent light as in FIG. 34, but the imaging range of the electronic camera 23 is limited. Other structures may be used as long as illumination is possible, such as the orientation of the light distribution lens 33 and separation from the package 3 lb (see Figure 38).
  • FIG. 37 shows a portion of the writing device 24 of the camera-equipped mobile phone 20 as an example of the imaging device according to the embodiment 26 of the present invention, and the same components as those in the embodiment 1 are the same.
  • the reference numerals are attached and the description is omitted.
  • the inner surface side of the protective cover 25 in the first embodiment is provided with a light diffusing portion 25a on which a processing such as a diamond cutter is performed to make the inside hard to see.
  • the structure does not include the light diffusion portion 25a.
  • the light emitting diode 31 can be provided on the electronic circuit board 30 at a position behind the mobile phone housing 21 retracted from the window opening 21a in the measurement.
  • the light emitting diode 31 is disposed below the housing 21 of the mobile phone, the light emitting diode 31 is not directly illuminated by external light, and the periphery of the light emitting diode 31 is compared. It is a dark environment.
  • the light emitting diode 31 used in the light device 24 of the mobile phone 20 a thin one can be adopted, and an object having a height of about 1 mm can be used.
  • the portion of the light emitting diode 31 that can be seen from the outside via the reflecting member 32 is a very small range.
  • the appearance may not be significantly impaired even if the inside is not hidden by the light diffusion portion 25a.
  • the light diffusion portion 25a of the protective cover 25 is deleted, light loss due to light reflection at the light diffusion portion 25a is reduced, and a brighter lighting device 24 can be obtained. it can.
  • the light emitting diode 31 is arranged on the lower side of the mobile phone housing 21.
  • the light emitting diode 31 is printed, sealed, etc. on the surface of the protective cover 25. It is also possible to provide a light-shielding portion 25b with a light source, and to arrange the light-shielding portion 25b below the portion where the inside is hard to see.
  • Embodiment 2 7.
  • FIG. 38 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the second embodiment 27 of the present invention.
  • the reference numerals are attached and the description is omitted.
  • the reflecting member 32 is attached to and fixed to the light emitting diode 31, and a case where the reflecting member 32 is integrally formed with the light emitting diode 31 is also shown.
  • the reflecting member 32 is formed by a package of the light emitting diode 31.
  • the light emitting element 31a in FIG. 38 is arranged in the package 31b of the light emitting diode 31 and emits light to the periphery. The light is reflected inside the package 31b and condensed on the opening 31c with the reflecting member 32.
  • the positioning of the reflecting member 32 and the light emitting diode 31 is determined by the component accuracy of the package 31 b of the light emitting diode 31, the positioning can be performed with high accuracy and precisely in a predetermined direction. Light can be bent and reflected.
  • the reflecting member 32 can be arranged near the opening 31c of the package 31b, the amount of light that goes to other than the reflecting member 32 is small, and light can be efficiently transmitted into the imaging range. Can be.
  • the imaging range of the electronic camera 23 can be easily illuminated brighter.
  • the reflection member 32 and the light emitting diode 31 can be configured by one component, the size can be reduced, and there is an advantage that the size of the mobile phone 20 can be further reduced.
  • Fig. 39 shows a structure in which the light distribution lens 33 of Fig. 38 is fixed to the package 31b of the light emitting diode 31 and integrated.
  • the reflection member 32, the light emitting diode 31 and the light distribution lens 33 can be configured as one component, the size can be reduced, and there is an advantage that the size of the mobile phone 20 can be further reduced.
  • Embodiment 2 8.
  • FIG. 40 shows a portion of a writing device 24 of a camera-equipped mobile phone 20 as an example of an imaging device according to the embodiment 28 of the present invention.
  • the reference numerals are attached and the description is omitted.
  • the electronic circuit board 30 is shown in the first embodiment, the electronic circuit board 30 will be described in detail.
  • the electronic circuit board 30 inside the mobile phone 20 includes an electronic circuit board 30a of the mobile phone itself, an electronic circuit board 30b for the lighting device 24, and electronic circuits of other components such as a camera. Substrates are possible.
  • the writing device 24 is formed on the electronic circuit board 30a of the mobile phone itself, In this case, the size can be minimized and the number of parts can be reduced.
  • the reflective member 32 which is an optical component, is handled, it may be difficult to assemble the light device 24 on the electronic circuit board 30a of the mobile phone itself on which other electronic components are mounted.
  • FIG. 40 shows a case where an electronic circuit board 30 b for the writing device 24 is employed as the electronic circuit board 30 of the writing device 24.
  • a light emitting diode 31, a reflection member 32, and a light distribution lens 33 are assembled on an electronic circuit board 30 b for the light device 24, and a semi-finished product 24 a of the light device 24 is used as a mobile phone. It is designed to be mounted on its own electronic circuit board 30a.
  • the electrical connection between the electronic circuit board 30a of the mobile phone itself and the electronic circuit board 3Ob for the lighting device 24 can be made by direct soldering or by using a connector.

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  • Cameras In General (AREA)

Abstract

L'invention concerne un système d'imagerie pouvant être rendu plus mince, en raison du fait qu'il comporte un petit dispositif d'éclairage qui demeure toujours allumé et peut capter positivement un objet, même dans un endroit sombre. L'invention concerne un système d'imagerie (20) comprenant un dispositif d'imagerie (23) pour capter un objet et un dispositif d'éclairage (24) pour éclairer un objet. Ledit dispositif d'éclairage (24) comprend une diode électroluminescente (31) actionnée pour émettre de la lumière par opération-clé sur le système d'imagerie (20), un élément réflecteur (32) pour fléchir l'axe optique (L) de la lumière provenant de la diode électroluminescente (31) dans un sens d'imagerie, ainsi qu'une lentille de répartition (33) pour répartir la lumière réfléchie depuis l'élément réflecteur (32) dans une plage d'imagerie.
PCT/JP2003/004421 2002-04-12 2003-04-07 Systeme d'imagerie WO2003087928A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2003584811A JP3607281B2 (ja) 2002-04-12 2003-04-07 携帯端末装置
CN038055848A CN1639628B (zh) 2002-04-12 2003-04-07 摄像设备
TW092108196A TW587193B (en) 2002-04-12 2003-04-10 Imaging apparatus

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2002110373 2002-04-12
JP2002-110373 2002-04-12
JP2002-123804 2002-04-25
JP2002123804 2002-04-25

Publications (1)

Publication Number Publication Date
WO2003087928A1 true WO2003087928A1 (fr) 2003-10-23

Family

ID=29253537

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/004421 WO2003087928A1 (fr) 2002-04-12 2003-04-07 Systeme d'imagerie

Country Status (4)

Country Link
JP (1) JP3607281B2 (fr)
CN (1) CN1639628B (fr)
TW (1) TW587193B (fr)
WO (1) WO2003087928A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005215528A (ja) * 2004-01-30 2005-08-11 Kyocera Corp 携帯端末装置
JP2023046386A (ja) * 2021-09-23 2023-04-04 アップル インコーポレイテッド 適応照明を備えた光源モジュール

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2588898A4 (fr) * 2010-07-01 2014-06-11 Nanocomp Oy Ltd Élément optique de type transmission, système d'éclairage et procédé de fabrication
CN102914860A (zh) * 2012-09-06 2013-02-06 黄力华 一种折射式照相机及led发光器调整控制装置
CN106249512A (zh) * 2016-10-12 2016-12-21 蔡思强 一种适用于移动终端的不可拆卸条形闪光灯
CN111724695B (zh) * 2019-03-20 2022-04-05 青岛海信移动通信技术股份有限公司 一种显示装置

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JPH10115854A (ja) * 1996-10-09 1998-05-06 Canon Inc 照明装置及びそれを用いた撮影装置
JP2000089318A (ja) * 1998-09-14 2000-03-31 Sony Corp カメラ用照明装置
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JP2000235245A (ja) * 1999-02-17 2000-08-29 Fuji Photo Film Co Ltd レンズ付きフイルムユニット用光源装置
EP1176849A2 (fr) * 2000-07-25 2002-01-30 Fuji Photo Film Co., Ltd. Flash électronique, appareil photographique électronique muni d'une tête émettrice de lumière
JP2002056706A (ja) * 2000-08-07 2002-02-22 Opt Design:Kk 照明装置
JP2002162670A (ja) * 2000-11-29 2002-06-07 Osaki Engineering Co Ltd 照明ユニット
JP2002258369A (ja) * 2001-02-27 2002-09-11 Canon Inc カメラ
JP2003157431A (ja) * 2001-11-21 2003-05-30 Matsushita Electric Ind Co Ltd 撮像装置

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JPS62188101A (ja) * 1986-02-13 1987-08-17 スタンレー電気株式会社 照射角可変機構を備えた投光器
JPH08334811A (ja) * 1995-06-06 1996-12-17 Canon Inc 写真撮影用照明装置及び該写真撮影用照明装置を有するカメラ
JPH10115854A (ja) * 1996-10-09 1998-05-06 Canon Inc 照明装置及びそれを用いた撮影装置
JP2000089318A (ja) * 1998-09-14 2000-03-31 Sony Corp カメラ用照明装置
JP2000098460A (ja) * 1998-09-25 2000-04-07 Konica Corp レンズ付きフィルムユニット
JP2000235245A (ja) * 1999-02-17 2000-08-29 Fuji Photo Film Co Ltd レンズ付きフイルムユニット用光源装置
EP1176849A2 (fr) * 2000-07-25 2002-01-30 Fuji Photo Film Co., Ltd. Flash électronique, appareil photographique électronique muni d'une tête émettrice de lumière
JP2002056706A (ja) * 2000-08-07 2002-02-22 Opt Design:Kk 照明装置
JP2002162670A (ja) * 2000-11-29 2002-06-07 Osaki Engineering Co Ltd 照明ユニット
JP2002258369A (ja) * 2001-02-27 2002-09-11 Canon Inc カメラ
JP2003157431A (ja) * 2001-11-21 2003-05-30 Matsushita Electric Ind Co Ltd 撮像装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005215528A (ja) * 2004-01-30 2005-08-11 Kyocera Corp 携帯端末装置
JP4657610B2 (ja) * 2004-01-30 2011-03-23 京セラ株式会社 携帯端末装置
JP2023046386A (ja) * 2021-09-23 2023-04-04 アップル インコーポレイテッド 適応照明を備えた光源モジュール

Also Published As

Publication number Publication date
CN1639628A (zh) 2005-07-13
TW587193B (en) 2004-05-11
JPWO2003087928A1 (ja) 2005-08-25
JP3607281B2 (ja) 2005-01-05
CN1639628B (zh) 2010-10-13
TW200305770A (en) 2003-11-01

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