CN107966811A - A kind of big visual field augmented reality optical system of refraction-reflection type free form surface - Google Patents
A kind of big visual field augmented reality optical system of refraction-reflection type free form surface Download PDFInfo
- Publication number
- CN107966811A CN107966811A CN201710384058.4A CN201710384058A CN107966811A CN 107966811 A CN107966811 A CN 107966811A CN 201710384058 A CN201710384058 A CN 201710384058A CN 107966811 A CN107966811 A CN 107966811A
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- form surface
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- visual field
- working face
- optical system
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- 230000003287 optical effect Effects 0.000 title claims abstract description 37
- 230000000007 visual effect Effects 0.000 title claims abstract description 31
- 230000003190 augmentative effect Effects 0.000 title claims abstract description 26
- 239000011521 glass Substances 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 238000009738 saturating Methods 0.000 claims 1
- 230000004075 alteration Effects 0.000 abstract description 10
- 210000001747 pupil Anatomy 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000012937 correction Methods 0.000 abstract description 3
- 210000000887 face Anatomy 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000005357 flat glass Substances 0.000 description 2
- 208000001491 myopia Diseases 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/08—Catadioptric systems
- G02B17/0804—Catadioptric systems using two curved mirrors
-
- 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
-
- 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
- G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention discloses a kind of big visual field augmented reality optical system of refraction-reflection type free form surface, including：First free-form surface lens, the second free-form surface lens, planoconvex spotlight and image display.The light that image display is sent is transmitted by plano-convex even aspheric surface lens, again by the second optics working face on the first optics work surface to the second free-form surface lens of the first free-form surface lens, then by the first optics working face on the second optics work surface to the first free-form surface lens on the second free-form surface lens, then human eye is transmitted into by the first free-form surface lens.The big visual field augmented reality optical system of refraction-reflection type free form surface of the present invention, have the advantages that compact-sized, emergent pupil away from big, visual field is big, eye move scope is big, full filed aberration correction well and high-energy utilization rate.
Description
Technical field
The present invention relates to augmented reality field, more particularly to a kind of big visual field augmented reality optical system of refraction-reflection type free form surface
System.
Background technology
In recent years, augmented reality (Augmented Reality, abbreviation AR) display device is fast-developing, due to the system
Belong to helmet system, thus it must compact-sized and lightweight, to strengthen the comfort level of user.Shown for augmented reality
Device, big visual field is extremely important, and big visual field can increase the feeling of immersion of user, allows the viewer to farthest observe high-quality
Dynamic image.Compact and light-weighted structure can greatly strengthen the comfort of wearer, and suitable emergent pupil is away from can make
Observer wears other visual systems (such as near-sighted glasses) and is used, and adds the scope of application of the system to wearer.But light
The visual field of system, emergent pupil condition each other away from, structural parameters such as big exit pupil diameter, short focus, while meet that above-mentioned condition exists
Sizable difficulty.
Therefore, it is badly in need of providing a kind of augmented reality optical system that can meet compact-sized light big visual field at the same time.
The content of the invention
The present invention is directed to above-mentioned problems of the prior art, proposes that a kind of big visual field enhancing of refraction-reflection type free form surface is existing
Real optical system, has compact-sized, lightweight, emergent pupil away from reasonable, visual field is big, eye moves that scope is big, full filed aberration correction is good
The advantages that good and high-light-energy utilization rate.
In order to solve the above technical problems, the present invention is achieved through the following technical solutions：
The present invention provides a kind of big visual field augmented reality optical system of refraction-reflection type free form surface, it includes：First is freely bent
Face lens, the second free-form surface lens, planoconvex spotlight and image display；
First free-form surface lens are equipped with the first optics working face, are set on second free-form surface lens
There is the second optics working face；
The light that described image display is sent is transmitted by planoconvex spotlight, then by the on the first free-form surface lens
The second optics working face on one optics work surface to the second free-form surface lens, then by the second free-form surface lens
On the second optics work surface to the first free-form surface lens on the first optics working face, then by the first free form surface
Lens are transmitted into human eye.
Further, the first optics working face institute film plating layer on first free-form surface lens is angle Selection film layer,
When incidence angle transmits between 7 ° -38 °, when incidence angle reflects between 41 ° -45 °.
Further, the first optics working face is both transmission plane and reflecting surface, light pass through the firstth for the first time
Reflect during optics working face, transmitted when passing through the first optics working face for the second time.
Further, the first optics working face and the second optics working face are for free form surface.
Further, first free-form surface lens and the second free-form surface lens have identical optical structure for two sides
The eyeglass of parameter.
Further, first free-form surface lens and the second free-form surface lens have identical optical structure for two sides
The plastics or glass lens of parameter.
Further, the second optics working face institute film plating layer is part reflective semitransparent film.
Further, the convex surface of the planoconvex spotlight is aspherical, standard sphere or free form surface.
Further, the planoconvex spotlight is even aspheric surface planoconvex spotlight or the aspherical planoconvex spotlight of odd times.
Further, the planoconvex spotlight is equipped with the 3rd optics working face.
Compared to the prior art, the present invention has the following advantages：
(1) the big visual field augmented reality optical system of refraction-reflection type free form surface provided by the invention, has emergent pupil away from rational
Advantage, can ensure that user sees image clear, that distortion is small in big field range；The present invention passes through two free form surfaces
Lens, the light channel structure design of an even aspheric surface planoconvex spotlight, make that more than 18mm can be reached, and ensure that user can wear
The system is used in the case of wearing other visual systems (such as near-sighted glasses)；
(2) augmented reality optical system of the invention, also with field angle is big, eye moves that scope is big, full filed aberration correction
The advantages that good, user are not likely to produce asthenopia in use, have outstanding visual experience；The present invention by two from
With toroidal lens and an even aspheric surface planoconvex spotlight, increase field angle, there is provided larger eye move scope (±
4mm), the scope of application of product is added；
(3) present invention makes real generation by the cooperation of two free-form surface lens and an even aspheric surface planoconvex spotlight
Scenery in boundary reaches human eye by two free-form surface lens, hardly introduces aberration, it is not necessary to extra increase compensation rib
Mirror system；
(4) delicate structure of the present invention, succinct, compact, using lens combination of turning back, substitutes free curved surface prism, makes product
Lightweight；
(5) present invention plates angle Selection film layer in the optics working face of the first free-form surface lens, improves light-use
Rate, the brightness of image of display are high.
Certainly, implement any of the products of the present invention and do not necessarily require achieving all the advantages described above at the same time.
Brief description of the drawings
Embodiments of the present invention are described further below in conjunction with the accompanying drawings：
Fig. 1 is the schematic diagram of the augmented reality optical system of the embodiment of the present invention；
Fig. 2 is the schematic diagram of the optical transfer function value of each visual field of the embodiment of the present invention；
Fig. 3 is the curvature of field figure of the embodiment of the present invention；
Fig. 4 is the distortion figure of the embodiment of the present invention；
Fig. 5 is the mesh distortion figure of the embodiment of the present invention；
Fig. 6 is the schematic diagram of existing augmented reality optical system.
Wherein：1- image displays, 2- plano-convex even aspheric surface lens,
The first free-form surface lens of 3-, the second free-form surface lens of 4-,
5- human eyes；
11- the first optics working faces,
12- the second optics working faces,
The 3rd optics working faces of 13-
Embodiment
Elaborate below to the embodiment of the present invention, the present embodiment is carried out lower premised on technical solution of the present invention
Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
With reference to Fig. 1, the augmented reality optical system of the present invention is described in detail, it includes：Image display 1, put down
Convex even aspheric surface lens 2, the first free-form surface lens 3, the second free-form surface lens 4, the first optics working face 11, the second light
Learn 12 and the 3rd optics working face 13 of working face.Wherein, the light that image display 1 is sent passes through plano-convex even aspheric surface lens
The 3rd optics working face 13 on 2 transmits, then reflexes to by the first optics working face 11 on the first free-form surface lens 3
The second optics working face 12 on two free-form surface lens 4, then works by the second optics on the second free-form surface lens 4
Face 12 reflexes to the first optics working face 11 on the first free-form surface lens 3, then by the first free-form surface lens 4 transmit into
Enter human eye 5.
In the present embodiment, the surface equation of each optics of lens working face is as follows：
(1) the 3rd optics working face 13 is even aspheric surface, its face type equation is as follows：
Wherein, c is radius of curvature, and k is quadratic surface coefficient, and r is the semiaperture of lens, α1、α2、α3、α4、α5、α6、α7、α8
Respectively second order term, quadravalence item, six ranks item, ten ranks item, ten second order terms, ten quadravalence items, the coefficient of 16 ranks, its structural parameters
As shown in table 1：
The structural parameters of 1 plano-convex even aspheric surface lens of table
(2) second optics working faces 12 are free form surface (extension multinomial face type), its face type equation is as follows：
Wherein, c is radius of curvature, and k is quadratic surface coefficient, ρ2=x2+y2, N is the sum of multinomial coefficient in series,
AiFor i-th polynomial coefficient of extension, the multinomial is simply in x, the power series in y directions, and Section 1 is x, followed by y, is connect
It is x*x, x*y, y*y etc., and 1 item has 2,2 times Xiang Yousan, 3 items have 4 etc., the data value of the position such as x and y
Capital divided by a normalization radius, obtain a multinomial coefficient without dimension,
First optics working face 11 is both transmission plane and reflecting surface, when light passes through the first optics working face 11 for the first time
Reflection, transmits when passing through the first optics working face 11 for the second time.
In the present embodiment, the first free-form surface lens optics working face 11 plating angle Selection film layer, when incidence angle 7 °-
Transmitted between 38 °, when incidence angle reflects between 41 ° -45 °.Reduce optical energy loss, make it have high-light-energy profit
With rate, make the brightness of image that it shows high.
The optical system of the present embodiment passes through two free-form surface lens, the light path knot of an even aspheric surface planoconvex spotlight
Structure designs, and adds emergent pupil away from reaching the air line distance of human eye and the first free-form surface lens optics working face 11
More than 18mm, wears other glasses easy to user, enhances the application scalability of optical system.
Existing own curved surface prism system, structure wedge like and itself has certain focal power, produces dioptric effect
Should, make true scenery product distortion or deflection, while huge aberration is produced, it is necessary to additionally increase compensation free curved surface prism,
The light of real physical world is compensated, shown in Fig. 6.And the present invention uses two free-form surface lens, an even is non-
The light channel structure design of spherical plano-convex lens combination, makes the scenery in real world be reached by two uniform thickness free-form surface lens
Human eye, hardly introduces aberration, it is not necessary to extra increase compensating prism system.
Using the optical system of the present embodiment, it can cause the optical delivery letter of each visual field (central vision and peripheral field)
Number is more than 0.5 at 45lp/mm, and each visual field optical transfer function value is as shown in Fig. 2, can make each visual field reach diffraction pole
Limit, makes optical system have outstanding optical property.
Using the optical system of the present embodiment, the curvature of field can be controlled in the range of less than 0.2mm, curvature of field figure such as Fig. 3
It is shown, can be by aberration control in the range of less than 0.6%, distortion figure is incited somebody to action as shown in figure 4, shown in mesh distortion figure figure Fig. 5
The curvature of field, distortion are perfectly limited in the effective range of human eye, without carrying out electronic calibration to image source.
In embodiment, the first free-form surface lens optics working face 11, the 23rd free-form surface lens optics working face 12 with
And the face type of plano-convex even aspheric surface lens can exchange, other face types can also be used, can be configured as needed.
In different embodiments, the first free-form surface lens optics working face 11, the 23rd free-form surface lens optics working face
12 and the structural parameters of face type of plano-convex even aspheric surface lens differ and be set to what is enumerated in the present embodiment, can be according to need
Carry out different settings.
In preferred embodiment, two pieces of free-form surface lens have the sheet glass of same curvature radius for two sides, further increase
Its focal length is added, thickness 2mm, two sides has a sheet glass of same curvature radius, and focal length is more than 2000mm, in real world
When scenery reaches human eye by the lens of so big focal length, aberration will not be more introduced.
In preferred embodiment, the structural parameters of each optics working face are controlled, including：Eccentric, inclination, curved surface single order and song
Face second order, can make monochromatic aberration be well controlled, and further reduce the aberration of system.
Disclosed herein is merely a preferred embodiment of the present invention, and this specification is chosen and specifically describes these embodiments, is
It is not limitation of the invention in order to preferably explain the principle of the present invention and practical application.Any those skilled in the art
The modifications and variations done in the range of specification, should all fall in the range of the present invention protects.
Claims (10)
- A kind of 1. big visual field augmented reality optical system of refraction-reflection type free form surface, it is characterised in that：It is saturating including the first free form surface Mirror, the second free-form surface lens, planoconvex spotlight and image display；First free-form surface lens are equipped with the first optics working face, and second free-form surface lens are equipped with the Two optics working faces；The light that described image display is sent is transmitted by planoconvex spotlight, then by the first light on the first free-form surface lens The second optics working face on work surface to the second free-form surface lens is learned, then by the second free-form surface lens The first optics working face on second optics work surface to the first free-form surface lens, then by the first free-form surface lens It is transmitted into human eye.
- A kind of 2. big visual field augmented reality optical system of refraction-reflection type free form surface according to claim 1, it is characterised in that： The first optics working face institute film plating layer on first free-form surface lens is angle Selection film layer, when incidence angle is at 7 ° -38 ° Between transmit, when incidence angle reflects between 41 ° -45 °.
- A kind of 3. big visual field augmented reality optical system of refraction-reflection type free form surface according to claim 2, it is characterised in that： The first optics working face is both transmission plane and reflecting surface, and light reflects when passing through the firstth optics working face for the first time, Transmitted when passing through the first optics working face for the second time.
- A kind of 4. big visual field augmented reality optical system of refraction-reflection type free form surface according to claim 1, it is characterised in that： The first optics working face and the second optics working face are for free form surface.
- A kind of 5. big visual field augmented reality optical system of refraction-reflection type free form surface according to claim 1, it is characterised in that： First free-form surface lens and the second free-form surface lens have the eyeglass of identical optical structural parameters for two sides.
- A kind of 6. big visual field augmented reality optical system of refraction-reflection type free form surface according to claim 4, it is characterised in that： First free-form surface lens and the second free-form surface lens have the plastics or glass of identical optical structural parameters for two sides Eyeglass.
- A kind of 7. big visual field augmented reality optical system of refraction-reflection type free form surface according to claim 1, it is characterised in that： The second optics working face institute film plating layer is part reflective semitransparent film.
- A kind of 8. big visual field augmented reality optical system of refraction-reflection type free form surface according to claim 1, it is characterised in that： The convex surface of the planoconvex spotlight is aspherical, standard sphere or free form surface.
- A kind of 9. big visual field augmented reality optical system of refraction-reflection type free form surface according to claim 1, it is characterised in that： The planoconvex spotlight is even aspheric surface planoconvex spotlight or the aspherical planoconvex spotlight of odd times.
- 10. the big visual field augmented reality optical system of a kind of refraction-reflection type free form surface according to claim 1, its feature exist In：The planoconvex spotlight is equipped with the 3rd optics working face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710384058.4A CN107966811A (en) | 2017-05-26 | 2017-05-26 | A kind of big visual field augmented reality optical system of refraction-reflection type free form surface |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710384058.4A CN107966811A (en) | 2017-05-26 | 2017-05-26 | A kind of big visual field augmented reality optical system of refraction-reflection type free form surface |
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| CN107966811A true CN107966811A (en) | 2018-04-27 |
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| CN201710384058.4A Pending CN107966811A (en) | 2017-05-26 | 2017-05-26 | A kind of big visual field augmented reality optical system of refraction-reflection type free form surface |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709676A (en) * | 2019-03-07 | 2019-05-03 | 浙江水晶光电科技股份有限公司 | A kind of augmented reality optics module and augmented reality device |
| CN110187506A (en) * | 2019-05-28 | 2019-08-30 | 京东方科技集团股份有限公司 | Optical presentation system and augmented reality equipment |
| CN110579880A (en) * | 2019-09-29 | 2019-12-17 | Oppo广东移动通信有限公司 | Near-to-eye display optical system and near-to-eye display device |
| CN111025659A (en) * | 2019-12-31 | 2020-04-17 | 上海视欧光电科技有限公司 | Augmented reality optical module and augmented reality equipment |
| CN111474715A (en) * | 2020-04-23 | 2020-07-31 | 歌尔股份有限公司 | Optical system and augmented reality device |
| WO2021068855A1 (en) * | 2019-10-10 | 2021-04-15 | 华为技术有限公司 | Display device module and head mounted display device |
| CN116661154A (en) * | 2023-06-16 | 2023-08-29 | 宁波鸿蚁光电科技有限公司 | Optical system with multiple folding optical paths and head-mounted display device |
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| CN101900872A (en) * | 2010-07-27 | 2010-12-01 | 中国航空工业集团公司洛阳电光设备研究所 | Two-piece free-form surface head mounted display optical system |
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| CN206805009U (en) * | 2017-05-26 | 2017-12-26 | 上海影创信息科技有限公司 | A kind of big visual field augmented reality optical system of refraction-reflection type free form surface |
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| CN101900872A (en) * | 2010-07-27 | 2010-12-01 | 中国航空工业集团公司洛阳电光设备研究所 | Two-piece free-form surface head mounted display optical system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709676A (en) * | 2019-03-07 | 2019-05-03 | 浙江水晶光电科技股份有限公司 | A kind of augmented reality optics module and augmented reality device |
| CN110187506A (en) * | 2019-05-28 | 2019-08-30 | 京东方科技集团股份有限公司 | Optical presentation system and augmented reality equipment |
| CN110579880A (en) * | 2019-09-29 | 2019-12-17 | Oppo广东移动通信有限公司 | Near-to-eye display optical system and near-to-eye display device |
| WO2021068855A1 (en) * | 2019-10-10 | 2021-04-15 | 华为技术有限公司 | Display device module and head mounted display device |
| CN111025659A (en) * | 2019-12-31 | 2020-04-17 | 上海视欧光电科技有限公司 | Augmented reality optical module and augmented reality equipment |
| CN111025659B (en) * | 2019-12-31 | 2022-04-19 | 合肥视涯技术有限公司 | Augmented reality optical module and augmented reality equipment |
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| CN116661154A (en) * | 2023-06-16 | 2023-08-29 | 宁波鸿蚁光电科技有限公司 | Optical system with multiple folding optical paths and head-mounted display device |
| CN116661154B (en) * | 2023-06-16 | 2023-11-10 | 宁波鸿蚁光电科技有限公司 | Optical system with multiple folding optical paths and head-mounted display device |
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