CN110161683A - Image projection apparatus and AR show equipment - Google Patents
Image projection apparatus and AR show equipment Download PDFInfo
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- CN110161683A CN110161683A CN201810146738.7A CN201810146738A CN110161683A CN 110161683 A CN110161683 A CN 110161683A CN 201810146738 A CN201810146738 A CN 201810146738A CN 110161683 A CN110161683 A CN 110161683A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
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Abstract
The present invention provides a kind of image projection apparatus and AR to show equipment, belongs to augmented reality technical field of imaging.Image projection apparatus of the invention, including image source and lens subassembly；Lens subassembly is fitted closely with image source, is reduced the refringence of interface when light enters lens, is improved the transmitance of lens upper surface, increase light efficiency, can also inhibit the generation of stray light and ghost image.It has the advantages that first, is bonded between image source and lens or gapless, make that optical system structure is more compact, volume is smaller, weight is lighter, comfortable wearing；Second, by improving image space refractive index, biggish numerical aperture is realized with relatively small angular aperture, reduces the deflection angle of rim ray, reduces design difficulty；Third reduces the refringence of lens interface, improves the transmitance of rim ray, reduces ghost image, and highlight；4th, element arrangements are compact, are convenient for adjustment, and system strength is high.
Description
Technical field
The present invention relates to augmented reality technical field of imaging, show in particular to a kind of image projection apparatus and AR
Equipment.
Background technique
AR (Augmented Reality, augmented reality) is also referred to as mixed reality, principle be by computer technology,
By virtual Information application to real world, true environment and virtual object have been added to the same picture or sky in real time
Between exist simultaneously.
Currently, people can be interacted by wearable device, such as AR glasses or the AR helmet with real world.Such as
Fig. 1 shows the structural schematic diagram that the AR in existing AR glasses or the AR helmet shows equipment, as shown in Figure 1, existing AR is aobvious
Show that equipment optical system includes image source 11, spectroscope 3, curved surface half-reflecting mirror 4 and the lens 12 above spectroscope 3, image source
11 are arranged in the top of optical system, and have certain distance between image source 11 and lens 12, and the image light of image source 11 is from top
Lens 12 are injected downwards.At the same time, ambient light is injected from the right side of curved surface half-reflecting mirror 4 (human eye direction) to the left, is done
It disturbs light also while being injected upwards from spectroscopical lower section.The some light of image light is bent by the reflection directive of spectroscope 3
Face half-reflecting mirror 4, some light using curved surface half-reflecting mirror 4 reflection directive spectroscope 3.At the same time, ambient light
Some light sequentially passes through curved surface half-reflecting mirror 4 and spectroscope 3 arrives at human eye；The some light of interference light passes through spectroscope 3
Reflection arrive at human eye.Parts of images light, component environment light and part interference light finally arrive at human eye simultaneously, so that with
Family it can be seen that extraneous true environment while can also be seen that the image of the image source being superimposed upon in true environment 11.
Existing AR equipment at least has the following deficiencies:
1. there is gap between image source and lens and gap is excessive, cause optical system structure size bigger than normal；
2. there are air between image source and lens, refractive index is low, the more difficult raising of numerical aperture, system limits resolution ratio by
Limit, design difficulty are high；
3., so that the reflectivity in the face is higher, being easy to rear since the refringence of air and lens interface is away from larger
Continuous system causes the stray lights such as ghost image；
4. the distribution of element relatively disperses, causes adjustment difficult and be easily damaged.
Summary of the invention
For above-mentioned problems of the prior art, shows and set the present invention provides a kind of image projection apparatus and AR
Standby, image source and lens subassembly fit closely, it is possible to reduce and the refringence of lens interface improves the transmitance of rim ray,
Ghost image is reduced, is highlighted.
In a first aspect, the embodiment of the invention provides a kind of image projection apparatus, including image source and lens subassembly；It is described
Mirror assembly is fitted closely with the image source.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein institute
Stating lens subassembly includes matching mirror and/or lens.
The possible embodiment of with reference to first aspect the first, the embodiment of the invention provides second of first aspect
Possible embodiment, wherein when the lens subassembly only includes lens, closely pasted between the image source and the lens
It closes.
The possible embodiment of with reference to first aspect the first, the embodiment of the invention provides the third of first aspect
Possible embodiment, wherein when the lens subassembly includes matching mirror and lens, the side of the matching mirror and the picture
It is fitted closely between source；The other side is fitted closely with the lens.
The third possible embodiment with reference to first aspect, the embodiment of the invention provides the 4th kind of first aspect
Possible embodiment, wherein the refractive index of the matching mirror is 1~2.7.
The 4th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 5th kind of first aspect
Possible embodiment, wherein the matching mirror is made of liquid material, liquid crystal, semisolid material or solid material.
The 5th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 6th kind of first aspect
Possible embodiment, wherein when the matching mirror is liquid material, liquid crystal or semisolid material, described image projection dress
Setting further includes sealing structure, and matching mirror is sealed between the image source and the lens.
The 5th kind of possible embodiment with reference to first aspect, the embodiment of the invention provides the 7th kind of first aspect
Possible embodiment, wherein when the matching mirror is solid material, the image source, matching mirror and the lens are mutually straight
It connects in succession.
With reference to first aspect, the embodiment of the invention provides the 8th kind of possible embodiments of first aspect, wherein institute
State the image source or single image source that image source is integrated optical source.
Second aspect, the embodiment of the invention also provides a kind of AR to show equipment, including polarization optical path component and above-mentioned
Image projection apparatus；
The polarization optical path component includes the multilayer film polarization spectroscope, wave plate component and curved surface half reflection being arranged successively
Mirror.
In conjunction with second aspect, the embodiment of the invention provides the first possible embodiments of second aspect, wherein institute
Stating multilayer film polarization spectroscope includes light polarizing film and polarization beam splitter；
The light polarizing film is located remotely from the side of described image grenade instrumentation and the wave plate component, for passing through polarization state
For the polarised light of first direction, the polarised light that polarization state is second direction is absorbed；
The polarization beam splitter is located at the side for closing on described image grenade instrumentation and the wave plate component, for by inclined
Polarization state is the polarised light of first direction, and reflected polarization state is the polarised light of second direction；
The first direction and the second direction are mutually perpendicular to.
In conjunction with the first possible embodiment of second aspect, the embodiment of the invention provides second of second aspect
Possible embodiment, wherein the multilayer film polarization spectroscope further includes substrate；The substrate is located at outside the light polarizing film
Among side, the light polarizing film and the polarization beam splitter or on the outside of the polarization beam splitter.
In conjunction with the first or second of possible embodiment of second aspect, the embodiment of the invention provides second aspects
The third possible embodiment, wherein the plane of reflection of the multilayer film polarization spectroscope and the curved surface half-reflecting mirror
Optical axis between angle be α；Angle between the normal of the image source and the plane of reflection of the multilayer film polarization spectroscope
For β；The value range of α is and 90 ° >=α >=0 ° between β -10 ° to+10 ° of β.
In conjunction with the third possible embodiment of second aspect, the embodiment of the invention provides the 4th kind of second aspect
Possible embodiment, wherein β is 0 °~90 °.
In conjunction with the third possible embodiment of second aspect, the embodiment of the invention provides the 5th kind of second aspect
Possible embodiment, wherein β is 40 °~50 °.
In conjunction with the 4th kind of second aspect or the 5th kind of possible embodiment, the embodiment of the invention provides second aspects
The 6th kind of possible embodiment, wherein when the polarised light of the first direction and the polarised light of the second direction are full
When under the premise of being mutually perpendicular to enough around 0 °~360 ° rotations in direction that light is propagated, polarization beam splitter and wave plate component will also change
Corresponding angle.
In conjunction with the 6th kind of possible embodiment of second aspect, the embodiment of the invention provides the 7th kind of second aspect
Possible embodiment, wherein the wave plate component is quarter wave plate.
In conjunction with the 7th kind of possible embodiment of second aspect, the embodiment of the invention provides the 8th kind of second aspect
Possible embodiment, wherein the quarter wave plate be set to the multilayer film polarization spectroscope and the curved surface half-reflecting mirror it
Between.
In conjunction with the 7th kind of possible embodiment of second aspect, the embodiment of the invention provides the 9th kind of second aspect
Possible embodiment, wherein the quarter wave plate fits in the inside of the curved surface half-reflecting mirror.
Basic functional principle of the invention:
Image projection apparatus and AR provided by the invention show equipment, and image source is fitted closely with lens subassembly, and image source issues
Image light will be directed into lens subassembly, reduce the refringence of interface when light enters lens, improve
The transmitance of lens upper surface, increases light efficiency, can also inhibit the generation of stray light and ghost image.It further says, passes through
Image space refractive index is improved, biggish numerical aperture can be realized with relatively small angular aperture, reduce the deviation of rim ray
Angle reduces design difficulty.
The embodiment of the present invention bring it is following the utility model has the advantages that
Image projection apparatus and AR provided in an embodiment of the present invention show equipment, have the advantages that
First, it is bonded between image source and lens or gapless, makes that optical system structure is more compact, volume is smaller, weight
Lighter, comfortable wearing；
Second, by improving image space refractive index, biggish numerical aperture is realized with relatively small angular aperture, reduces side
The deflection angle of edge light, reduces design difficulty；
Third reduces the refringence of lens interface, improves the transmitance of rim ray, reduces ghost image, and enhance
Brightness；
4th, element arrangements are compact, are convenient for adjustment, and system strength is high.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification, claims
And specifically noted structure is achieved and obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is that a kind of AR of the prior art shows the structural schematic diagram of equipment；
Fig. 2 is the structural schematic diagram of image projection apparatus provided by first embodiment of the invention；
Fig. 3 is the structural schematic diagram of image projection apparatus provided by second embodiment of the invention；
Fig. 4 is the structural schematic diagram that AR provided by first embodiment of the invention shows equipment；
Fig. 5 is the structural schematic diagram of multilayer film polarization spectroscope provided by the embodiment of the present invention；
Fig. 6 is the structural schematic diagram that AR provided by second embodiment of the invention shows equipment.
Icon:
1- image projection apparatus；11- image source；12- lens；13- matches mirror；3- spectroscope；4- curved surface half-reflecting mirror；5- is more
Tunic polarization spectroscope；51- substrate；52- light polarizing film；53- polarization beam splitter；6- wave plate component.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.The component of embodiments of the present invention, which are generally described and illustrated herein in the accompanying drawings can be matched with a variety of different
It sets to arrange and design.Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below
The range of claimed invention, but it is merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work, belongs to the present invention
The range of protection.
Showing between equipment image source and lens for existing AR has gap and gap is excessive, the low problem of refractive index,
The embodiment of the invention provides a kind of image projection apparatus and AR to show equipment, below first to image projection apparatus of the invention
It describes in detail.
Embodiment one
A kind of image projection apparatus is present embodiments provided, is applied to AR and shows in equipment.As shown in Fig. 2, the image is thrown
Injection device, including image source 11 and lens subassembly.Lens subassembly is fitted closely with image source 11.Lens subassembly is including matching mirror 13 and thoroughly
Mirror 12.It should be noted that lens subassembly can also only include matching mirror.
Wherein, the effect of image source 11 is to show the image for needing to project in human eye, and image source 11 can use plane image source,
The including but not limited to image source of integrated optical source or single image source.For example, OLED (Organic Light-Emitting Diode,
Organic Light Emitting Diode), LCOS (Liquid Crystal On Silicon, liquid crystal on silicon), LCD (Liquid Crystal
Display, liquid crystal display), MEMS (Microelectromechanical Systems, micro electronmechanical display system), DMD
The electronic device of displaying principles such as (Digital Micro-mirror Device, digital micromirror elements).Wherein, OLED and LCD
For the image source of integrated optical source；LCOS, MEMS and DMD are single image source, need in addition to increase secondary light source.
Mirror 13 is matched positioned at image source 11 and lens 12 between, the side of matching mirror 13 is bonded with image source 11, the other side with it is saturating
Mirror 12 is bonded.Matching mirror 13 has high transparency and certain refractive index, and the refractive index of matching mirror 13 is greater than the refractive index of air.
Matching mirror 13 can be made of transparent liquid material, such as water, alcohol etc.；It can also be made of transparent solid material, example
Such as glass, resin；It can also be made of liquid crystal or semisolid material.
When the material for matching mirror 13 is liquid, liquid crystal or semisolid, it is provided between lens 12 and image source 11 external close
Seal structure prevents matching mirror material to be lost for example, closed frame, makes to form closed cavity between lens 12 and image source 11.When
When the material for matching mirror 13 is solid, matching mirror 13 can be directly connected between image source 11 and lens 12, without frame.That is image source
11 are directly connected to matching mirror 13 or are bonded by glue, match mirror 13 and lens 12 are directly connected to or are bonded by glue.
Lens 12 can be the lens group an of lens or multiple lens composition.Every face lens can be in lens or lens group
It is convex lens, concavees lens or convex lens and concavees lens any combination etc., the face type of lens can be spherical surface, aspherical, freedom song
Light refraction, matching polarized light road component are completed to be imaged by face etc., lens 12 jointly.
As shown in Figure 1, due to existing AR show equipment image source and lens between have gap and gap it is excessive, a side
Face will cause AR and show that the size of equipment is bigger than normal, and the distribution of element relatively disperses, and causes optical system structure size bigger than normal, and adjustment is tired
It is difficult and be easily damaged.On the other hand, since image source is in air, refractive index is low, the more difficult raising of numerical aperture, system limits
Resolution limitations, design difficulty are high.And since the refringence of air and lens interface is away from larger, so that the reflection in the face
Rate is higher, is easy to cause the stray lights such as ghost image to follow-up system.Ghost image refers to due to reflextion from lens surface and in optical system focal plane
The additional image nearby generated, the additional image brightness is generally darker, and is staggered with preimage.
Compared with the above-mentioned prior art, as shown in Fig. 2, the image light that the image source of the present embodiment issues is first into
With mirror, since matching mirror material has high transparency and certain refractive index, compared with air dielectric, reduces light and enter thoroughly
The refringence of interface when mirror, improves lens upper surface transmitance, increases light efficiency, while inhibiting stray light and ghost image
It generates.It further says, the refractive index of air is 1, and the refractive index of matching mirror material can be between 1~2.7, according to R=
(R is diffraction spot radius to (0.61* λ)/(n*sin θ) calculation formula, and λ is optical wavelength, and n is image planes refractive index, and θ is input aperture
Angle), the refractive index for improving medium is capable of providing smaller diffraction pattern, improves imaging resolution.By improving image space refractive index,
Biggish numerical aperture is realized with relatively small angular aperture, reduces the deflection angle of rim ray, reduces design difficulty.Together
When, it is bonded between image source and lens subassembly or gapless, makes that optical system structure is more compact, volume is smaller；And element arrangements
It is compact, it is convenient for adjustment, system strength is high.
Embodiment two
Another image projection apparatus is present embodiments provided, is applied to AR and shows in equipment.As shown in figure 3, the image
Grenade instrumentation, including image source 11 and lens subassembly.Lens subassembly is fitted closely with image source 11.
Lens subassembly includes lens 12.Lens 12 can be the lens group an of lens or multiple lens composition.Lens or
Every face lens can be convex lens, concavees lens or convex lens and concavees lens any combination etc. in lens group, and the face types of lens can be with
It is spherical surface, aspherical, free form surface etc., light refraction, matching polarized light road component are completed to be imaged by lens 12 jointly.Image source 11
It is fitted closely with lens 12.
Since image source 11 and lens 12 fit closely, the image light that image source 11 issues be will be directed into lens 12,
The refringence for reducing interface when light enters lens improves lens upper surface transmitance, increases light efficiency, can also
To inhibit the generation of stray light and ghost image.It further says, the image projection apparatus of the present embodiment, by improving image space refraction
Rate realizes biggish numerical aperture with relatively small angular aperture, reduces the deflection angle of rim ray, and it is difficult to reduce design
Degree.In addition, fit closely between image source and lens, make that optical system structure is more compact, volume is smaller, weight is lighter, wears
Comfortably.And element arrangements are compact, are convenient for adjustment, and system strength is high.
Embodiment three
A kind of AR display equipment is present embodiments provided, as shown in figure 4, the AR shows equipment, including image projection apparatus 1
With polarization optical path component.
Wherein, the image projection apparatus that image projection apparatus 1 is provided using embodiment one, including image source 11, matching mirror 13
With lens 12.Its specific structure may refer to embodiment one, and details are not described herein.
Polarizing optical path component includes the multilayer film polarization spectroscope 5, wave plate component 6 and song being arranged successively in the horizontal direction
Face half-reflecting mirror 4.Multilayer film polarization spectroscope 5 is located at the below or above of image projection apparatus 1.
As shown in figure 5, multilayer film polarization spectroscope 5 includes substrate 51, light polarizing film 52 and polarization beam splitter 53.Light polarizing film 52
For being the polarised light of first direction by polarization state, the polarised light that polarization state is second direction is absorbed.Polarization beam splitter 53 is used
In the polarised light for by polarization state being first direction, reflected polarization state is the polarised light of second direction.Multilayer film polarization spectroscope 5
It is obliquely installed, polarization beam splitter 53 is located at the side for closing on image projection apparatus 1 and wave plate component 6, and light polarizing film 52 is located remotely from
The side of image projection apparatus 1 and wave plate component 6.
Wherein, first direction and second direction are mutually perpendicular to.For example, it is the side P that first direction polarised light, which can be polarization state,
To polarised light, second direction polarised light can be polarization state be the direction S polarised light.In view of P-polarized light and S polarized light can
To rotate under the premise of satisfaction is mutually perpendicular to around the light direction of propagation, therefore, first direction polarised light is also possible to polarization state
With the polarised light of the direction P at an angle, second direction polarised light is also possible to polarization state and the polarization of the direction S at an angle
Light, in the embodiment of the present invention, without limiting.
Wherein, light polarizing film, substrate and polarization beam splitter through-thickness put in order, can be it is as shown in Figure 5, according to
Secondary is substrate, light polarizing film and polarization beam splitter, i.e. substrate is located on the outside of light polarizing film；Or light polarizing film, substrate and polarization point
Light film, i.e. substrate are located among light polarizing film and polarization beam splitter；It or is light polarizing film, polarization beam splitter and substrate, i.e. substrate position
On the outside of polarization beam splitter.
Optionally, multilayer film polarization spectroscope 5 can not also include substrate, only include light polarizing film and polarization beam splitter.Partially
Vibration spectro-film is located at the side for closing on image projection apparatus and wave plate component, and light polarizing film is located remotely from image projection apparatus and wave plate
The side of component.
Since existing AR shows that equipment uses common spectroscope, causes interference with light and largely enter human eye, and is external
The contrast of the interference light severe jamming image of injection seriously affects the contrast of image so that picture material is chaotic.
In the present embodiment, when extraneous interference light is incident in multilayer film polarization spectroscope 5, interference light can be first
By light polarizing film 52, the polarised light of second direction therein is absorbed, remaining first direction polarised light can pass through light polarizing film and partially
Shake spectro-film, and substantially noiseless light is reflected into human eye, can promote image-watching contrast, reduces interference.
As shown in figure 4, the optical axis of the plane of reflection of multilayer film polarization spectroscope 5 and curved surface half-reflecting mirror 4 is in the angle α, it is described
Angle between the normal of image source and the plane of reflection of the multilayer film polarization spectroscope 5 is β；The value range of α be β -10 ° extremely
Between+10 ° of β, and 90 ° >=α >=0 °.β is preferably 40 ° -50 ° between 0 ° -90 °.At this point, the visual field of image light is maximum, figure
As the visual range of light is maximum.
Wave plate component 6 can use quarter wave plate.Quarter wave plate is used to the second incident polarised light being changed into circularly polarized light.
Quarter wave plate can be planar structure or curved-surface structure；Quarter wave plate can also be cylindrical structure；Quarter wave plate can also be spherical surface or aspherical
Structure.Quarter wave plate can be set to reduce by half between reflecting mirror 7 in multilayer film polarization spectroscope 5 and curved surface, as shown in Figure 4.1/4 wave
Piece can also fit in curved surface and reduce by half the inside of reflecting mirror 7, that is, close on the side of multilayer film polarization spectroscope 5.
A part of incident ray can be reflected back wave plate component 6 by curved surface half-reflecting mirror 4.
The image light being emitted from lens 12 enters on multilayer film polarization spectroscope 5, and image light touches partially first
Shake spectro-film 53, and the partial polarization direction in image light is that the polarised light of second direction can be reflected onto wave plate component 6 at this time.
Polarization direction is that the polarised light of second direction passes through wave plate component 6, is changed into circularly polarized light, then a part is through curved surface half reflection
Mirror 4 injects to the external world, and another part is reflected by curved surface half-reflecting mirror 4.Reflected image light is through quarter wave plate, by circular polarization
Light becomes the first polarised light, i.e. the polarization state polarised light that is first direction.The first polarised light after transformation is again incident on multilayer
Film polarization spectroscope 5, due to polarization direction be first direction, at this time light pass through polarization beam splitter, substrate and light polarizing film into
Enter into human eye, enables users to the virtual image for seeing big visible angle.
First polarised light and the second polarised light can meet be mutually perpendicular under the premise of around the direction 0 that light is propagated~
360 ° of rotations, polarization beam splitter and quarter wave plate will also change corresponding angle at this time.It therefore, can be according to first in production
The angle of direction polarised light and second direction polarised light determines the setting angle of multilayer film polarization spectroscope and wave plate component.
In view of the theoretical energy efficiency of the image light of the AR device of the prior art only has about 12.5%, image light
Brightness critical constraints；And the volume of system is limited, it is difficult to promote image quality and optical property by increasing lens numbers.
Compared with prior art, the embodiment of the present invention can be improved 1 times of the efficiency of light energy utilization or more using polarization optical path component,
The energy efficiency of image light can be promoted to about 25%, improve image light brightness, save power consumption, reduce system heat generation amount.
When ambient light incidence curved surface half-reflecting mirror 4, a part of ambient light penetrates curved surface half-reflecting mirror 4, wave plate group
Part 6 and multilayer film polarization spectroscope 5 allow users to see true external environment into human eye, by virtual image and very
The Overlapping display of real environment achievees the effect that augmented reality.
In conclusion AR provided in this embodiment shows equipment, have the advantages that
First, it is bonded between image source and lens or gapless, makes that optical system structure is more compact, volume is smaller, weight
Lighter, comfortable wearing；
Second, by improving image space refractive index, biggish numerical aperture is realized with relatively small angular aperture, reduces side
The deflection angle of edge light, reduces design difficulty；
Third reduces the refringence of lens interface, improves the transmitance of rim ray, reduces ghost image, and enhance
Brightness；
4th, element arrangements are compact, are convenient for adjustment, and system strength is high；
5th, multilayer film polarization spectroscope removes interference light, improves the contrast of image light and ambient light；
6th, the energy efficiency of image light is promoted to about 25%, and brightness is obviously improved；
7th, in the case where same image light brightness demand, which shows that equipment can reduce equipment with energy saving
Calorific value.
Example IV
It present embodiments provides another AR and shows equipment, as shown in fig. 6, the AR shows equipment, including image projection dress
Set 1 and polarization optical path component.
Wherein, the image projection apparatus that image projection apparatus 1 is provided using embodiment two, including image source 11 and lens 12,
Image source 11 is fitted closely with lens 12.Its specific structure may refer to embodiment two, and details are not described herein.
Since image source 11 and lens 12 fit closely, the image light that image source 11 issues be will be directed into lens 12,
The refringence for reducing interface when light enters lens improves lens upper surface transmitance, increases light efficiency, can also
To inhibit the generation of stray light and ghost image.
In order to save length, the present embodiment structure identical with embodiment three may refer to above-described embodiment three, herein not
It repeats again.
AR provided in this embodiment shows equipment, fits closely between image source and lens, steps up optical system structure more
It gathers, volume is smaller, weight is lighter, comfortable wearing.
Image projection apparatus and AR provided in an embodiment of the present invention show equipment technical characteristic having the same, so also can
Identical technical problem is solved, identical technical effect is reached.
It should be noted that in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (19)
1. a kind of image projection apparatus, which is characterized in that including image source and lens subassembly；The lens subassembly and the image source are tight
Closely connected conjunction.
2. image projection apparatus according to claim 1, which is characterized in that the lens subassembly include matching mirror and/or
Lens.
3. image projection apparatus according to claim 2, which is characterized in that when the lens subassembly only includes lens,
It is fitted closely between the image source and the lens.
4. image projection apparatus according to claim 2, which is characterized in that when the lens subassembly include matching mirror and thoroughly
When mirror, fitted closely between the side and the image source of the matching mirror；The other side is fitted closely with the lens.
5. image projection apparatus according to claim 4, which is characterized in that the refractive index of the matching mirror is 1~2.7.
6. image projection apparatus according to claim 5, which is characterized in that the matching mirror is by liquid material, liquid crystal, half
Solid-state material or solid material are constituted.
7. image projection apparatus according to claim 6, which is characterized in that when the matching mirror is liquid material, liquid crystal
Or when semisolid material, described image grenade instrumentation further includes sealing structure, and the matching mirror is sealed in the image source and institute
It states between lens.
8. image projection apparatus according to claim 6, which is characterized in that when the matching mirror is solid material, institute
Image source, matching mirror and the lens are stated to be connected directly to one another.
9. image projection apparatus according to claim 1, which is characterized in that the image source is the image source or list of integrated optical source
One image source.
10. a kind of AR shows equipment, which is characterized in that including polarization optical path component and according to any one of claims 1 to 9
Image projection apparatus；
The polarization optical path component includes the multilayer film polarization spectroscope, wave plate component and curved surface half-reflecting mirror being arranged successively.
11. AR according to claim 10 shows equipment, which is characterized in that the multilayer film polarization spectroscope includes polarisation
Film and polarization beam splitter；
The light polarizing film is located remotely from the side of described image grenade instrumentation and the wave plate component, for being the by polarization state
The polarised light in one direction absorbs the polarised light that polarization state is second direction；
The polarization beam splitter is located at the side for closing on described image grenade instrumentation and the wave plate component, for passing through polarization state
For the polarised light of first direction, reflected polarization state is the polarised light of second direction；
The first direction and the second direction are mutually perpendicular to.
12. AR according to claim 11 shows equipment, which is characterized in that the multilayer film polarization spectroscope further includes base
Piece；The substrate is located among the light polarizing film outside, the light polarizing film and the polarization beam splitter or the polarization beam splitter
Outside.
13. AR according to claim 11 or 12 shows equipment, which is characterized in that the multilayer film polarization spectroscope it is anti-
The angle penetrated between plane and the optical axis of the curved surface half-reflecting mirror is α；The normal of the image source and multilayer film polarization point
Angle between the plane of reflection of light microscopic is β；The value range of α is and 90 ° >=α >=0 ° between β -10 ° to+10 ° of β.
14. AR according to claim 13 shows equipment, which is characterized in that β is 0 °~90 °.
15. AR according to claim 13 shows equipment, which is characterized in that β is 40 °~50 °.
16. AR according to claim 14 or 15 shows equipment, which is characterized in that when the first direction polarised light and
The polarised light of the second direction meet be mutually perpendicular under the premise of around light propagate 0 °~360 ° rotations in direction when, it is described
Polarization beam splitter and the wave plate component will also change corresponding angle.
17. AR according to claim 16 shows equipment, which is characterized in that the wave plate component is quarter wave plate.
18. AR according to claim 17 shows equipment, which is characterized in that the quarter wave plate is set to the multilayer film
Between polarization spectroscope and the curved surface half-reflecting mirror.
19. AR according to claim 17 shows equipment, which is characterized in that the quarter wave plate fits in the curved surface half
The inside of reflecting mirror.
Priority Applications (30)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146738.7A CN110161683A (en) | 2018-02-12 | 2018-02-12 | Image projection apparatus and AR show equipment |
| CN201980001716.4A CN110573933A (en) | 2018-02-12 | 2019-02-12 | Wearable AR system, AR display equipment and projection source module thereof |
| EP19750620.7A EP3754409A4 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system used therein |
| KR1020207026342A KR102564295B1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system and semi-reflector therefor |
| PCT/CN2019/074868 WO2019154430A1 (en) | 2018-02-12 | 2019-02-12 | Wearable ar system, ar display device, and projection source module thereof |
| CN201980001732.3A CN110537135A (en) | 2018-02-12 | 2019-02-12 | Augmented reality equipment and its employed in optical system and half-reflecting mirror |
| PCT/CN2019/074857 WO2019154428A1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device, optical system and half mirror employed therein |
| JP2020565011A JP7285579B2 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system therefor |
| CN201980001727.2A CN110537134A (en) | 2018-02-12 | 2019-02-12 | Augmented reality equipment and its employed in optical system |
| CN201980001731.9A CN110546550A (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system used therein |
| KR1020207026193A KR102628264B1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality devices and optical systems used in augmented reality devices |
| PCT/CN2019/074863 WO2019154429A1 (en) | 2018-02-12 | 2019-02-12 | Wearable ar system, and ar display device and projection source module thereof |
| PCT/CN2019/074876 WO2019154432A1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system used therein |
| CN201980001721.5A CN110537133A (en) | 2018-02-12 | 2019-02-12 | Wearable AR system, AR show equipment and its projection source mould group |
| EP19750619.9A EP3754408A4 (en) | 2018-02-12 | 2019-02-12 | Wearable ar system, and ar display device and projection source module thereof |
| KR1020207026326A KR102455328B1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system therefor |
| JP2020565009A JP7329207B2 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system and semi-reflector therefor |
| EP19751742.8A EP3754411A4 (en) | 2018-02-12 | 2019-02-12 | Wearable ar system, ar display device, and projection source module thereof |
| EP19750326.1A EP3754407B1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system used therein |
| JP2020565008A JP7418706B2 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system therefor |
| EP19750958.1A EP3754410A4 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device, optical system and half mirror employed therein |
| PCT/CN2019/074852 WO2019154426A1 (en) | 2018-02-12 | 2019-02-12 | Augmented reality device and optical system used therein |
| US16/930,061 US11693244B2 (en) | 2018-02-12 | 2020-07-15 | Augmented reality apparatus and optical system therefor |
| US16/930,156 US11693245B2 (en) | 2018-02-12 | 2020-07-15 | Wearable AR system, AR display device and its projection source module |
| US16/930,000 US11042040B2 (en) | 2018-02-12 | 2020-07-15 | Augmented reality apparatus and optical system therefor |
| US16/989,502 US11874466B2 (en) | 2018-02-12 | 2020-08-10 | Augmented reality apparatus, and optical system and semi-reflector therefor |
| US16/990,633 US11500205B2 (en) | 2018-02-12 | 2020-08-11 | Wearable AR system, AR display device and its projection source module |
| US17/326,014 US11460704B2 (en) | 2018-02-12 | 2021-05-20 | Augmented reality apparatus and optical system therefor |
| US18/325,986 US11988839B2 (en) | 2018-02-12 | 2023-05-30 | Augmented reality apparatus and optical system therefor |
| US18/624,141 US20240241384A1 (en) | 2018-02-12 | 2024-04-02 | Augmented reality apparatus and optical system therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810146738.7A CN110161683A (en) | 2018-02-12 | 2018-02-12 | Image projection apparatus and AR show equipment |
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| Publication Number | Publication Date |
|---|---|
| CN110161683A true CN110161683A (en) | 2019-08-23 |
Family
ID=67635043
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810146738.7A Pending CN110161683A (en) | 2018-02-12 | 2018-02-12 | Image projection apparatus and AR show equipment |
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