CN211826725U - Optical system of miniature head-mounted display - Google Patents
Optical system of miniature head-mounted display Download PDFInfo
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- CN211826725U CN211826725U CN202020301273.0U CN202020301273U CN211826725U CN 211826725 U CN211826725 U CN 211826725U CN 202020301273 U CN202020301273 U CN 202020301273U CN 211826725 U CN211826725 U CN 211826725U
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Abstract
The utility model discloses an optical system of a micro head-mounted display, which comprises a part of reflecting part penetrating elements arranged corresponding to the display device so as to penetrate out the part of polarized light emitted by the reflecting part penetrating elements; the phase delay element is arranged corresponding to the partial reflection partial penetration element to delay the phase of the polarized light to become polarized light of another polarization state; a first lens corresponding to the partial reflection penetration element and the phase delay element for receiving the polarized light and adjusting the focal length of the polarized light; the reflective polarizing element receives and reflects the polarized light of the other polarization state, so that the polarized light of the other polarization state passes through the phase delay element and the partial reflection part transmission element, then is reflected back to the reflective polarizing element and is transmitted to the second lens, and then is guided into the polarized light human eye. The utility model discloses utilize the phase delay of light and the optical path that multiple reflection reaches approximate length, can shorten display device and optical mode system's distance, and the setting of double-lens can revise the aberration to enlarge the angle of vision.
Description
Technical Field
The present invention relates to an optical element, system or instrument, and more particularly to an optical system of a miniature head-mounted display.
Background
Virtual Reality (VR) is a technology that generates a virtual image of a three-dimensional space by using computer technology and projects the image to the eyes of a user to make the user feel the user's environment. At present, the technology for realizing virtual reality mostly enables a user to wear a virtual reality device on the head, so that a display screen in the virtual reality device can be close to the eyes of the user, and the user can see a display image with the screen width exceeding 90 degrees in a short distance.
Referring to fig. 1, to illustrate the technology of a general head-mounted display, a conventional head-mounted display includes a display screen 90 and an optical module 92, wherein an image of the display screen 90 can be projected on the optical module 92, so that the optical module 92 can adjust a focus position of the image to project the image on a human eye 94 in a short distance. The image projected by the display screen 90 passes through an optical path with an optical path length d and then enters the optical module 92, for example, if the optical path length d is 40 millimeters (mm), the distance between the display screen 90 and the optical module 92 in the head-mounted display is at least 40mm, and in addition, the optical module 92, the eye-fitting distance and the wearable display housing are added, so that the length of the head-mounted display is necessarily greater than 40 mm.
Therefore, the current structure of the head-mounted display makes the device quite heavy, and when a user wears the head, the problem that the user cannot wear the device for a long time due to the fact that the head-mounted display is too large in size or too heavy in weight is caused, and the like, so that the problem that the thickness of the head-mounted display is reduced, and the wearing and the use of the head-mounted display are convenient for the user is an important subject.
In view of the above, the present invention provides an optical system of a micro-head-mounted display to overcome the above problems.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide an optical system of a micro head-mounted display, which can effectively correct the aberration of an image and enlarge the field angle by the arrangement of two lenses.
Another object of the present invention is to provide an optical system of a micro head-mounted display, which includes a reflective polarizer, a phase retardation element, and a partially reflective penetration element, and utilizes the phase retardation and multiple reflections of light to reach an optical path with an approximate length, so as to shorten the distance between the display device and the optical module system, and miniaturize the head-mounted display.
To achieve the above object, the present invention provides an optical system of a micro head-mounted display, which can receive an output image of a display device and polarized light thereof, the optical system includes a partially reflective penetrating element disposed corresponding to the display device, the partially reflective penetrating element partially reflects the polarized light and partially penetrates the partially reflective penetrating element; a phase delay element disposed corresponding to the partially reflective partially transmissive element, the phase delay element receiving the polarized light transmitted through the partially reflective partially transmissive element and phase-delaying it into the polarized light of another polarization state; a first lens corresponding to the partial reflection penetration element and the phase delay element for receiving the polarized light and adjusting the focal length of the polarized light; a reflective polarizer is disposed corresponding to the phase retarder for receiving and reflecting the polarized light of the other polarization state, so that the polarized light of the other polarization state passes through the phase retarder and the partially reflective transmissive element, and then is reflected back to the reflective polarizer and transmitted to a second lens, and the second lens is disposed corresponding to the reflective polarizer for receiving and guiding the polarized light passing through the reflective polarizer into human eyes.
According to an embodiment of the invention, the partially reflective partially transmissive element is arranged on the first lens.
According to the embodiment of the present invention, the optical system of the micro head-mounted display further includes a planar optical element disposed between the first lens and the second lens, and the phase delay element and the reflective polarizer are disposed on the planar optical element.
According to the utility model discloses an embodiment, wherein one side that the adjacent first lens of second lens is equipped with a second plane portion, makes phase delay element and reflective polarizing element set up in the second plane portion.
According to an embodiment of the invention, wherein the reflective polarizing element is arranged on the second lens.
According to an embodiment of the invention, wherein the phase delay element is arranged on a planar optical element.
According to the utility model discloses an embodiment, miniature head-mounted display's optical system further includes a plane optical element, sets up between display device and first lens, and partial reflection part pierces through component and phase delay component and sets up on plane optical element.
According to the present invention, a side of the first lens disposed adjacent to the display device has a first plane portion, and the partially reflective portion penetrates through the element and the phase delay element and is disposed on the first plane portion.
The purpose, technical content, features and effects of the present invention will be more readily understood through the following detailed description of specific embodiments.
Drawings
Fig. 1 is a schematic diagram of an optical path between a display device of a head-mounted display and a human eye in the prior art.
Fig. 2A is a schematic view of a first embodiment of the present invention.
Fig. 2B is a schematic diagram of an optical path of polarized light according to the first embodiment of the present invention.
Fig. 3 is a schematic view of a second embodiment of the present invention.
Fig. 4 is a schematic view of a third embodiment of the present invention.
Fig. 5 is a schematic view of a fourth embodiment of the present invention.
Fig. 6 is a schematic view of a fifth embodiment of the present invention.
Description of reference numerals: 10-partially reflective partially transmissive; 12-a first lens; 122-a first planar portion; 14-a phase delay element; 16-reflective polarizing element; 18-a planar optical element; 20-a second lens; 202-a second planar section; 2-a display device; 90-a display device; 92-an optical module; 94-human eye; a-polarized light; b-polarized light; c-polarized light; d-polarized light.
Detailed Description
The utility model provides an optical system of miniature head-mounted display, its aberration that can effectively revise the image to enlarge the scope of angle of vision, and can utilize the phase delay of light and the optical path that multiple reflection reaches approximate length, with the distance that shortens between display device and the optical system, it is miniaturized with the head-mounted display.
In order to understand the utility model discloses a structural design, the optical system's of the miniature head-mounted display of the earlier detailed description structure is constituteed here, the utility model discloses an optical system can supply to install in miniature head-mounted display, and optical system receives display device's output image and polarized light among the miniature head-mounted display to the wide display image that exceeds 90 degrees of presentation screen supplies the user to watch and admire. Referring to fig. 2A, the optical system of the present embodiment is disposed in the micro head-mounted display and located at the front end of the display device 2, and the optical system has a structure that a part of the reflective transmissive element 10, a first lens 12, a phase retardation element 14, a reflective polarizer 16, a planar optical element 18, and a second lens 20 are sequentially disposed in a corresponding manner from the display device 2. The first lens 12 and the second lens 20 may be aspheric lenses, fresnel lenses or a combination of multiple lenses.
The polarized light output by the display device 2 may be linearly polarized light, circularly polarized light, or other polarized states, and therefore, one or more polarization adjusting elements (not shown) may be further added between the display device 2 and the partially transmissive and partially reflective element 10 according to the polarization condition of the display device 2, and the polarization adjusting elements may be linear polarization elements, circular polarization elements, phase retardation elements, or reflective polarization elements to correspondingly adjust the polarization state of the display device 2. The polarization adjustment element may be a film material or an optical coating, etc. disposed on the display device 2 or the partially transmissive partially reflective element 10 in a coating, plating, or bonding manner.
Referring to fig. 2A, the partially reflective partially transmissive element 10 is disposed corresponding to the display device 2, and the partially reflective partially transmissive element 10 of the present embodiment may be disposed on the first lens 12 by adhering or plating. The planar optical element 18 can be a planar glass correspondingly disposed between the first lens 12 and the second lens 20, and the phase retardation element 14 and the reflective polarizer 16 are disposed on the planar optical element 18 by means of adhesion or coating.
The specific data of the mini-head-mounted display of the embodiment is as follows:
F＝22.43；TTL＝30.81；2ω＝116.5；f1＝140；f2＝117.3
watch 1
In Table I, F is the effective focal length of the optical system, the total length of the optical system is TTL, ω is the half field angle of the optical system, and F1Is the effective focal length of the first lens group, f2Nd is a refractive index, and Vd is an Abbe number. A. B, C, D, E, F, etc. are parameters in the aspheric formula, K is the conic coefficient, the aspheric formula is
Wherein C is 1/R, and R is a curvature radius.
Referring to fig. 2B, after the display device 2 emits the polarized light a in the first polarization state, the polarized light a in the first polarization state enters the partially reflective partially transmissive element 10 on the first lens 12 to partially reflect the polarized light a in the first polarization state emitted by the display device 2, and partially penetrates the partially reflective partially transmissive element 10 to enter the first lens 12, and then the polarized light a in the first polarization state continuously penetrates the first lens 12 to enter the phase retarder 14 on the planar optical element 18, and the phase retarder 14 receives the polarized light a in the first polarization state, performs phase retardation on the polarized light a to obtain the polarized light B in the second polarization state, and then the polarized light B in the second polarization state enters the reflective polarizing element 16, so that the reflective polarizing element 16 reflects the polarized light B in the second polarization state, the polarized light B in the second polarization state enters the phase retardation element 14 again to generate a polarized light C in a third polarization state, the polarized light C in the third polarization state is reflected back to the partially reflective transmissive element 10 and then reflected back to the phase retardation element 14 to generate a polarized light D in a fourth polarization state, and the polarized light D in the fourth polarization state enters the second lens 20 to be guided into the human eye.
Referring to fig. 2B, for example, when the light emitted from the display device 2 is circularly polarized light, the first polarized light is polarized light with a phase difference of 1/4 wavelengths (i.e. the polarized light a is circularly polarized light), the retardation element 14 is an element that generates a retardation of 1/4 wavelengths, the retardation element 14 receives the first polarized light a and performs a phase retardation on the first polarized light a to obtain a second polarized light B, the second polarized light is a polarized light with a phase difference of 1/2 wavelengths (i.e., the polarized light B is a linearly polarized light), the third polarized light generated after passing through the retardation element 14 for the second time is a polarized light with a phase difference of 3/4 wavelengths (i.e., the polarized light C is a circularly polarized light), and the fourth polarized light generated after passing through the retardation element 14 for the third time is a polarized light with a phase difference of 1 wavelength (i.e., the polarized light D is a linearly polarized light). In this embodiment, the polarization directions of the polarized light B and the polarized light D are perpendicular to each other, and the reflective polarizer 16 only provides the transmission of the linear polarization direction of the polarized light D and reflects the polarization direction of the polarized light B, so that the polarized light D can pass through the reflective polarizer.
Therefore, in the present embodiment, the arrangement of the first lens 12 and the second lens 20 can effectively correct the aberration of the image and increase the range of the field angle, and the optical elements such as the reflective polarizer 16, the phase retarder 14, and the partially reflective partially transmissive element 10 are disposed between the display device 2 and the optical module of the head-mounted display, so that the optical path length with approximate length can be achieved by utilizing the phase retardation and multiple reflections of the light, and the distance between the display device 2 and the optical system can be shortened, thereby miniaturizing the head-mounted display.
In addition to the above structure, the present invention further provides a structure of the second embodiment, as shown in fig. 3, a part of the reflective penetration element 10, a first lens 12, a phase retardation element 14, a reflective polarizer 16 and a second lens 20 are correspondingly disposed in sequence from one side of the display device 2 in the structure of the optical system of the present embodiment. The partially reflective partially transmissive element 10 is disposed on the first lens 12 in a manner of adhesion or plating, as in the first embodiment. A second plane portion 202 is disposed on the second lens element 20 and adjacent to one side of the first lens element 12, and the second plane portion 202 of the second lens element 20 is used for the phase retardation element 14 and the reflective polarization element 14 to be disposed on the second plane portion 202 in an adhesive or film-coated manner. The specific data of the mini-head-mounted display of this embodiment are as follows:
F＝17.8；TTL＝27.9；2ω＝106.3°；f1＝118.7；f2＝146.5
watch two
In table two, F is an effective focal length of the optical system, the total length of the optical system is TTL, ω is a half field angle of the optical system, F1 is an effective focal length of the first lens group, F2 is an effective focal length of the second lens group, Nd is a refractive index, and Vd is an abbe number. A. B, C, D, E, F, etc. are parameters in the aspheric formula, K is the conic coefficient, the aspheric formula is
Wherein C is 1/R, and R is a curvature radius.
The transmission state of the polarized light entering the optical system in this embodiment is the same as that in the first embodiment, after the display device 2 emits the polarized light of the first polarization state, the polarized light penetrates the partially reflective transmissive element 10 and enters the first lens 12, and then enters the phase retardation element 14, and becomes the polarized light of the second polarization state, and then enters the reflective polarizer 16, and then is reflected back to the phase retardation element 14 to generate the polarized light of the third polarization state to the partially reflective transmissive element 10, and then is reflected back to the phase retardation element 14 to generate the polarized light of the fourth polarization state to the reflective polarizer and the second lens 20, so as to be guided into human eyes. Therefore, the transmission states of the polarized light of the second embodiment are all transmitted into the phase delay element 14 to change the polarization state of the polarized light, and the changed states and refraction modes are the same as those of the first embodiment, and thus are not described in detail.
Referring to fig. 4, the optical system of the present embodiment includes a display device 2, and a first lens 12, a partially reflective transmissive element 10, a phase retardation element 14, a planar optical element 18, a reflective polarizer 16, and a second lens 20 disposed in sequence. Wherein the partially reflective partially transmissive element 10 is disposed on the first lens 12 by means of pasting or plating; the phase delay element 14 is arranged on the planar optical element 18 in a sticking or coating mode; the reflective polarizer 16 is coated on the surface of the second lens 20 by means of pasting or coating. The specific data of the mini-head-mounted display of this embodiment is as follows:
F＝23.25；TTL＝25.39；2ω＝98.8°；f1＝-413.8；f2＝67.7
watch III
In Table III, F is the effective focal length of the optical system, the total length of the optical system is TTL, ω is the half field angle of the optical system, F1 is the effective focal length of the first lens group, and F2 is the effective focal length of the second lens groupThe effective focal length, Nd is the refractive index, and Vd is the Abbe number. A. B, C, D, E, F, G, etc. are parameters in the aspheric formula, K is the conic coefficient, the aspheric formula is
Wherein C is 1/R, and R is a curvature radius.
The transmission state of the polarized light entering the optical system in this embodiment is the same as that in the first embodiment, after the display device 2 emits the polarized light in the first polarization state, the polarized light penetrates the first lens 12 and the partially reflective transmissive element 10, and then enters the phase retardation element 14, and becomes the polarized light in the second polarization state, and then enters the reflective polarizer 16, and then is reflected back to the phase retardation element 14 to generate the polarized light in the third polarization state to the partially reflective transmissive element 10, and then is reflected back to the phase retardation element 14 to generate the polarized light in the fourth polarization state to the reflective polarizer and the second lens 20, so as to be guided into the human eye. Therefore, the transmission states of the polarized light of the third embodiment are all transmitted into the phase delay element 14 to change the polarization state of the polarized light, and the changed states and refraction modes are the same as those of the first embodiment, and thus are not described in detail.
Referring to fig. 5, a part of the reflective transmissive element 10, a phase retardation element 14, a planar optical element 18, a first lens 12, a reflective polarizer 16, and a second lens 20 are disposed in sequence in the optical system of this embodiment from the display device 2. Wherein the partially reflective partially transmissive element 10 and the phase retardation element 14 are deposited on the surface of the planar optical element 18 by means of pasting or plating; the reflective polarizer 16 is coated on the surface of the second lens 20 by means of pasting or coating. The specific data of the mini-head-mounted display of this embodiment is as follows:
F＝25.20；TTL＝35.45；2ω＝96.5°；f1＝140.1；f2＝438.8
watch four
In table four, F is an effective focal length of the optical system, the total length of the optical system is TTL, ω is a half field angle of the optical system, F1 is an effective focal length of the first lens group, F2 is an effective focal length of the second lens group, Nd is a refractive index, and Vd is an abbe number. A. B, C, D, E, F, G, etc. are parameters in the aspheric formula, K is the conic coefficient, the aspheric formula is
Wherein C is 1/R, and R is a curvature radius.
The transmission state of the polarized light entering the optical system in this embodiment is the same as that in the first embodiment, after the display device 2 emits the polarized light in the first polarization state, the polarized light penetrates the partially reflective transmissive element 10 and enters the phase retarder 14, and the polarized light in the second polarization state enters the first lens 12 and the reflective polarizer 16, and the reflective polarizer 16 reflects the polarized light in the third polarization state back to the phase retarder 14 to the partially reflective transmissive element 10, and then reflects the polarized light in the fourth polarization state back to the phase retarder 14 to the reflective polarizer 16 and the second lens 20, so as to be introduced into human eyes. Therefore, the transmission states of the polarized light of the fourth embodiment are all transmitted into the phase delay element 14 to change the polarization state of the polarized light, and the changed states and refraction modes are the same as those of the first embodiment, and thus are not described in detail.
Referring to fig. 6, a fifth embodiment of the present invention is described, in which a part of the reflective partially-transmissive element 10, a phase retardation element 14, a first lens 12, a reflective polarizer 16, and a second lens 20 are disposed in sequence and correspondingly in the optical system of this embodiment from the display device 2. Wherein one side of the first lens 12 adjacent to the display device 2 has a first plane portion 122, and a part of the reflective portion is disposed on the first plane portion 122 by means of adhering or coating; the reflective polarizer 16 is disposed on the surface of the second lens 20 by means of pasting or plating. The specific data of the mini-head-mounted display of this embodiment is as follows:
F＝19.42；TTL＝30.58；2ω＝97.9°；f1＝110；f2＝2628
watch five
In table five, F is an effective focal length of the optical system, the total length of the optical system is TTL, ω is a half field angle of the optical system, F1 is an effective focal length of the first lens group, F2 is an effective focal length of the second lens group, Nd is a refractive index, and Vd is an abbe number. A. B, C, D, E, F, etc. are parameters in the aspheric formula, K is the conic coefficient, the aspheric formula is
Wherein C is 1/R, and R is a curvature radius.
The transmission state of the polarized light entering the optical system in this embodiment is the same as that in the first embodiment, after the display device 2 emits the polarized light in the first polarization state, the polarized light penetrates the partially reflective transmissive element 10 and enters the phase retarder 14, and the polarized light in the second polarization state enters the first lens 12 and the reflective polarizer 16, and the reflective polarizer 16 reflects the polarized light in the third polarization state back to the phase retarder 14 to the partially reflective transmissive element 10, and then reflects the polarized light in the fourth polarization state back to the phase retarder 14 to the reflective polarizer 16 and the second lens 20, so as to be introduced into human eyes. Therefore, the transmission states of the polarized light of the fifth embodiment are all transmitted into the phase delay element 14 to change the polarization state of the polarized light, and the changed states and refraction modes are the same as those of the first embodiment, and thus are not described in detail.
Referring to fig. 2A and fig. 3 to fig. 6, the present invention can achieve the effects of a larger viewing angle, a shorter system distance, and a better aberration correction, as shown in the following formulas:
wherein f is1Is the effective focal length of the first lens 12, f2Is the effective focal length of the second lens 20, F is the effective focal length of the optical system, ω is the half field angle of the optical system, and R1、R2Radius of curvature, R, of both surfaces of the second lens 203、R4The radius of curvature of the two surfaces of the first lens element 12, TTL is the total length of the optical system, Vd1Abbe number (abbe number) of the first lens, and Vd2 is abbe number of the second lens. When the light path accords with the formula (1), the light path can achieve a good refraction and reflection effect, and the total length is effectively shortened; the visual angle is effectively increased according to the formulas (2) and (3), and good aberration balance is achieved; the visual angle can be increased and the lightness and thinness can be achieved according to the formula (4); good color difference correction can be achieved according to the formula (5), and the viewing contrast is effectively improved.
The sixth table below is the calculation results of the equations (1) to (5) shown in fig. 2A and the first to fifth embodiments.
Watch six
According to the sixth table, the embodiments of the present invention can satisfy the formulas (1) to (5), so that the structure of the present invention can achieve a good refraction and reflection effect of the light path, effectively shortening the total length; the visual angle is effectively increased, and good aberration balance is achieved; the visual angle can be increased and the lightness and thinness can be achieved; can achieve the effects of good color difference correction, effective improvement of viewing contrast and the like.
To sum up, the utility model discloses a setting of first lens and second lens doublelens can effectively revise the aberration of image to promote the scope of angle of vision, and set up optical elements such as reflective polarizing element, phase delay component, partial reflection part penetrating element wearing the display, utilize the phase delay of light and multiple reflection to reach the optical path of approximate length, with the distance that shortens between display screen and the optical system, in order to wear the display miniaturization.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, all the equivalent changes or modifications of the features and spirit described in the application scope of the present invention should be included in the protection scope of the present invention.
Claims (18)
1. An optical system of a miniature head-mounted display, which can receive an output image of a display device and polarized light thereof, the optical system comprising:
a partially reflective partially transmissive element disposed in correspondence with the display device to partially reflect the polarized light and partially transmit the partially reflective partially transmissive element;
a phase delay element, which is arranged corresponding to the partial reflection partial transmission element, receives the polarized light transmitted through the partial reflection partial transmission element and performs phase delay to the polarized light to become the polarized light of another polarization state;
a first lens, disposed corresponding to the partially reflective transmissive element and the phase retarder element, for receiving the polarized light and adjusting the focal length of the polarized light;
a reflective polarization element, which is arranged corresponding to the phase delay element, receives and reflects the polarized light of another polarization state, so that the polarized light of another polarization state passes through the phase delay element and the partial reflection partial transmission element, and then is reflected back to the reflective polarization element and is transmitted through the reflective polarization element; and
and the second lens is arranged corresponding to the reflective polarizing element, receives the polarized light penetrating through the reflective polarizing element and guides the polarized light into human eyes.
2. The optical system of a miniature head-mounted display as set forth in claim 1, wherein the partially reflective partially transmissive element is disposed on the first lens.
3. The optical system of claim 1, further comprising a planar optical element disposed between the first lens and the second lens, wherein the phase retardation element and the reflective polarizer are disposed on the planar optical element.
4. The optical system of claim 1, wherein a second plane portion is disposed on a side of the second lens adjacent to the first lens, and the phase retardation element and the reflective polarizer are disposed on the second plane portion.
5. The optical system of claim 1, wherein the reflective polarizer is disposed on the second lens.
6. The optical system of claim 1, wherein the phase retardation element is disposed on a planar optical element.
7. The optical system of claim 1, further comprising a planar optical element disposed between the display device and the first lens, wherein the partially reflective partially transmissive element and the phase retardation element are disposed on the planar optical element.
8. The optical system of claim 1, wherein a side of the first lens disposed adjacent to the display device has a first plane portion, and the partially reflective transmissive element and the phase retardation element are disposed on the first plane portion.
9. The optical system of claim 1, wherein the polarized light output by the display device is linearly polarized light or circularly polarized light.
10. The optical system of claim 1, further comprising at least one polarization adjusting element disposed between the display device and the partially transmissive partially reflective element, wherein the polarization adjusting element is a thin film material or an optical coating disposed on the display device or the partially transmissive partially reflective element in a coating, plating or bonding manner.
11. The optical system of claim 10, wherein the polarization adjustment element is a linear polarizer, a circular polarizer, the phase retarder, or the reflective polarizer.
12. The optical system of miniature head-mounted display as set forth in claim 1, wherein the optical system satisfies
F is the effective focal length of the optical system1Is the effective focal length of the first lens, f2Is the effective focal length of the second lens.
13. The micro-scale of claim 1An optical system for a head-mounted display, characterized in that the optical system satisfies
F is the effective focal length of the optical system, and R is1The radius of curvature of the side of the second lens close to the human eye, R2Is the radius of curvature of the side near the display device.
14. The optical system of miniature head-mounted display as set forth in claim 1, wherein the optical system satisfies
F is the effective focal length of the optical system, and R is3Is the radius of curvature of the first lens on the side close to the human eye, R4Is the radius of curvature of the side near the display device.
15. The optical system of miniature head-mounted display as set forth in claim 1, wherein the optical system satisfies
The F is the effective focal length of the optical system, the ω is the half field angle of the optical system, and the TTL is the total length of the optical system.
16. The optical system of miniature head-mounted display as set forth in claim 1, wherein the optical system satisfies
The Vd1Is Abbe number of the first lens, the Vd2Is the abbe number of the second lens.
17. The optical system of claim 1, wherein the first lens is a spherical lens, an aspherical lens, a fresnel lens, or a combination of multiple lenses.
18. The optical system of claim 1, wherein the second lens is a spherical lens, an aspherical lens, a fresnel lens, or a combination of multiple lenses.
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| CN112558287A (en) * | 2020-12-30 | 2021-03-26 | 深圳纳德光学有限公司 | Catadioptric eyepiece optical system and head-mounted display device |
| CN113391447A (en) * | 2020-03-12 | 2021-09-14 | 双莹科技股份有限公司 | Optical system of miniature head-mounted display |
| CN114935822A (en) * | 2022-06-15 | 2022-08-23 | 业成科技（成都）有限公司 | Optical system |
| WO2023126740A1 (en) * | 2021-12-28 | 2023-07-06 | 株式会社半導体エネルギー研究所 | Optical device and electronic device |
| JP7516458B2 (en) | 2022-05-10 | 2024-07-16 | 日東電工株式会社 | Lens portion, laminate, display, manufacturing method of display, and display method |
| JP7547456B2 (en) | 2022-12-28 | 2024-09-09 | 日東電工株式会社 | Lens portion, display body and display method |
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| CN113391447A (en) * | 2020-03-12 | 2021-09-14 | 双莹科技股份有限公司 | Optical system of miniature head-mounted display |
| CN112558287A (en) * | 2020-12-30 | 2021-03-26 | 深圳纳德光学有限公司 | Catadioptric eyepiece optical system and head-mounted display device |
| CN112558287B (en) * | 2020-12-30 | 2024-06-04 | 深圳纳德光学有限公司 | Catadioptric eyepiece optical system and head-mounted display device |
| WO2023126740A1 (en) * | 2021-12-28 | 2023-07-06 | 株式会社半導体エネルギー研究所 | Optical device and electronic device |
| JP7516458B2 (en) | 2022-05-10 | 2024-07-16 | 日東電工株式会社 | Lens portion, laminate, display, manufacturing method of display, and display method |
| CN114935822A (en) * | 2022-06-15 | 2022-08-23 | 业成科技（成都）有限公司 | Optical system |
| JP7547456B2 (en) | 2022-12-28 | 2024-09-09 | 日東電工株式会社 | Lens portion, display body and display method |
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Effective date of registration: 20230428 Address after: Room 102, Building 1, No. 8 Shangsha Zhongnan Road, Chang'an Town, Dongguan City, Guangdong Province Patentee after: Dongguan Shuangying Optoelectronic Technology Co.,Ltd. Address before: taoyuan city Patentee before: SHUANGYING TECHNOLOGY Co.,Ltd. |