CN207081878U - A kind of big visual field refraction-reflection type free form surface augmented reality optical system of big emergent pupil - Google Patents
A kind of big visual field refraction-reflection type free form surface augmented reality optical system of big emergent pupil Download PDFInfo
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- CN207081878U CN207081878U CN201720600081.8U CN201720600081U CN207081878U CN 207081878 U CN207081878 U CN 207081878U CN 201720600081 U CN201720600081 U CN 201720600081U CN 207081878 U CN207081878 U CN 207081878U
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Abstract
The utility model discloses a kind of big big visual field refraction-reflection type free form surface augmented reality system of emergent pupil, including：A kind of big visual field refraction-reflection type free form surface augmented reality system of big emergent pupil, including：Free surface lens, speculum, 1 free form surface half-reflecting half mirror and an image display of not more than 2 no less than 2；The light that described image display is sent is after the reflection between free surface lens, afterwards into speculum, then by speculum reflexes to free form surface half-reflecting half mirror, is finally reflected into human eye by free form surface half-reflecting half mirror.Big emergent pupil angular field free curved surface refraction-reflection type augmented reality optical system of the present utility model, have the advantages that compact-sized, emergent pupil away from it is big, visual field is big, eye moves that scope is big, full filed aberration correction is good and high-light-energy utilization rate.
Description
Technical field
Augmented reality field is the utility model is related to, more particularly to a kind of big visual field refraction-reflection type free form surface enhancing of big emergent pupil
Real optical 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 to observe high-quality
Dynamic image.And big emergent pupil is used, added away from observer can be made to wear other visual systems (such as near-sighted glasses)
The scope of application of the system to wearer.But the visual field of optical system, emergent pupil are away from, structural parameters such as big exit pupil diameter, short focus
Condition each other, while meet that above-mentioned condition has sizable difficulty.
Therefore, it is badly in need of providing a kind of augmented reality optical system that can meet the big visual field of big emergent pupil simultaneously.
Utility model content
The utility model is directed to above-mentioned problems of the prior art, proposes that a kind of big visual field refraction-reflection type of big emergent pupil is free
Curved surface augmented reality optical system, have compact-sized, emergent pupil away from it is big, 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 utility model is achieved by the following technical solution：
A kind of big visual field refraction-reflection type free form surface augmented reality optical system of big emergent pupil, it is characterised in that including：
Free surface lens, the speculum of not more than 2,1 free form surface half-reflecting half mirror and one no less than 2
Individual image display；
The light that described image display is sent is after the reflection between free surface lens, afterwards into speculum,
Free form surface half-reflecting half mirror is reflexed to by speculum again, is finally reflected into people by free form surface half-reflecting half mirror
Eye.
Further, a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil, including first from
By curve lens, the second free surface lens, a speculum, a free form surface half-reflecting half mirror and image display.,
The light that described image display is sent reflexes to the second free surface lens by the first free surface lens, warp
Cross the second free surface lens and reflex to speculum, then free form surface half-reflecting half mirror is reflexed to by speculum, finally pass through
Free form surface half-reflecting half mirror is reflected into human eye.
Further, first free surface lens are provided with the first optics working face and the second optics working face, institute
State the second free surface lens and be provided with the 3rd optics working face and the 4th optics working face, the free form surface half-reflecting half mirror
It is provided with the 5th optics working face and the 6th optics working face；The light that described image display is sent works by the first optics
Face is refracted to the second optics working face, then through the second optics work surface to the first optics working face, then through the first optics work
The 3rd optics working face is refracted to as face, then the 4th optics working face is refracted to through the 3rd optics working face, then through the 4th optics
Work surface is refracted to speculum to the 3rd optics working face, then through the 3rd optics working face, then reflexes to through speculum
Five optics working faces, then the 6th optics working face is refracted to through the 5th optics working face, then arrived through the 6th optics work surface
5th optics working face, most it is refracted to human eye through the 5th optics working face afterwards.
Further, at least one in the first optics working face and the second optics working face is free form surface.
Further, the first optics working face plating anti-reflection film, the second optics working face plating high-reflecting film.
Further, at least one in the 3rd optics working face and the 4th optics working face is free form surface.
Further, the 3rd optics working face plating anti-reflection film, the 4th optics working face plating high-reflecting film.
Further, speculum is free form surface.
Further, at least one in the 5th optics working face and the 6th optics working face is free form surface.
Further, the 5th optics working face and the 6th optics working face are equidistant free form surface.
Further, the 5th optics working face plating part reflective semitransparent film, the 6th optics working face plating antireflective film.
Further, the position interchangeable of described two free surface lens, speculum and free form surface half-reflecting half mirror.
Compared to prior art, the utility model has advantages below：
(1) the big visual field refraction-reflection type free form surface augmented reality system of big emergent pupil provided by the utility model, have emergent pupil away from
The advantages of big, user are not likely to produce kopiopia in use, have outstanding visual experience；The utility model is anti-by half
Light is reflected into human eye by pellicle mirror, and light path is turned back using half-reflecting half mirror, extends the distance of emitting light path,
Emergent pupil is added away from more than 48mm can be reached, big emergent pupil is away from can ensure that user can wear other visual systems (such as
Near-sighted glasses) in the case of use the system；
(2) augmented reality optical system of the present utility model, there is the advantages of angle of visual field is big, user can be ensured big
Image clear, that distortion is small is seen in field range；The utility model passes through two free-form surface lens, speculum, one
The cooperation of individual free form surface half-reflecting half mirror, increases the angle of visual field, the angle of visual field is reached 66 °.
(3) augmented reality optical system of the present utility model, there is eye to move that scope is big, full filed aberration correction is good etc. excellent
Point, user are not likely to produce kopiopia in use, have outstanding visual experience；The utility model is freely bent by two
The cooperation of face lens, a speculum, free form surface half-reflecting half mirror, increases the angle of visual field, there is provided larger eye moves
Scope (± 4mm), add the scope of application of product.
(4) augmented reality optical system of the present utility model, have the advantages that full filed aberration correction is good, can cause
The optical transfer function of each visual field (central vision and peripheral field) is more than 0.6 at 451p/mm, and distortion is less than 4%.
(5) the utility model carries out light path using half-reflecting half mirror and turned back and aberration correction, the scenery warp in real world
Cross half-reflecting half mirror and reach human eye, hardly introduce aberration, it is not necessary to extra increase compensating prism system；
(6) this knot utility model structure is exquisite, succinct, compact, is easy to the mechanical mechanism of increase regulation interpupillary distance；
(7) the utility model improves the efficiency of light energy utilization, and the brightness of image of display is high.
Certainly, implement any product of the present utility model to it is not absolutely required to reach all the above advantage simultaneously.
Brief description of the drawings
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is the schematic diagram of the augmented reality optical system of embodiment of the present utility model；
Fig. 2 is the schematic diagram of the optical transfer function value of each visual field of embodiment of the present utility model；
Fig. 3 is the curvature of field figure of embodiment of the present utility model；
Fig. 4 is the distortion figure of embodiment of the present utility model；
Fig. 5 is the mesh distortion figure of embodiment of the present utility model；
Wherein：
1- imaging sensors, the free surface lens of 2- first,
The free surface lens of 3- second, 4- speculums,
5- free form surface half-reflecting half mirrors；11- the first optics working faces,
12- the second optics working faces, the optics working faces of 13- the 3rd,
The optics working faces of 14- the 4th, the optics working faces of 15- the 5th,
The optics working faces of 16- the 6th.
Embodiment
Embodiment of the present utility model is elaborated below, the present embodiment using technical solutions of the utility model as
Under the premise of implemented, give detailed embodiment and specific operating process, but the scope of protection of the utility model is not
It is limited to following embodiments.
With reference to Fig. 1, augmented reality optical system of the present utility model is described in detail, it includes：Imaging sensor
1, the first free surface lens 2, the second free surface lens 3, speculum 4, free form surface half-reflecting half mirror 5.Described first certainly
The first optics working face 11 and the second optics working face 12 are provided with by curve lens 2, is set on second free surface lens 3
There are the 3rd optics working face 13 and the 4th optics working face 14, the free form surface half-reflecting half mirror 5 is provided with the 5th optics work
Make the optics working face 16 of face 15 and the 6th.
Wherein, the light that described image display 1 is sent is by the first optics working face on the first free surface lens 2
11 are refracted into the second optics working face 12, are then reflexed to by the second optics working face 12 on the second free surface lens 3
The 3rd optics working face 13, the 4th optics working face 14 is refracted to by the 3rd optics working face 13, then by the 4th
Optics working face 14 reflexes to speculum 4, then the 5th optics reflexed to by speculum 4 on free form surface half-reflecting half mirror 5
Working face 15, the 6th optics working face 16 is refracted to by the 5th optics working face 15, finally by the 6th optics working face
16 are reflected into human eye.
In the present embodiment, the surface equation of each optics working face is as follows：
(1)
Wherein, c is radius of curvature, and k is quadratic surface coefficient, and A, B, C, D are respectively 4,6,8,10 rank asphericity coefficients.
Or
(2)
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, and 2 Xiang Yousan items, 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, and its structural parameters is as shown in table 1,
The definition of 1 each label of table
Light is reflected into human eye by the optical system sheet of the present embodiment by half-reflecting half mirror, using half-reflecting half mirror pair
Light path is turned back, and extends the distance of emitting light path, that is, adds emergent pupil away from more than 48mm can be reached by using interpupillary distance, greatly
Emergent pupil enhances light away from that can ensure that user can use the system in the case where wearing other visual systems (such as near-sighted glasses)
Learn systematic difference autgmentability.
The utility model is turned back using the progress of half-reflecting half mirror 5 light path and aberration correction, half-reflecting half mirror 5 are sheet glass,
Focal length is very big, and the scenery in real world reaches human eye by sphere half-reflecting half mirror 5, hardly introduces aberration, is not required to
Additionally to increase compensating prism system.
Augmented reality optical system of the present utility model, there is the advantages of angle of visual field is big, can ensure that user is regarding greatly
Image clear, that distortion is small is seen in the range of；The utility model by two free-form surface lens, a speculum, one
The cooperation of free form surface half-reflecting half mirror, increases the angle of visual field, the angle of visual field is reached 66 °.
Using the optical system of the present embodiment, the optical delivery of each visual field (central vision and peripheral field) can be caused
Function is more than 0.6 at 451p/mm, and each visual field optical transfer function value is as shown in Fig. 2 can be so that each visual field reaches diffraction
The limit, make optical system that there is outstanding optical property.
Using the optical system of the present embodiment, the curvature of field can be controlled in the range of less than 0.1mm, curvature of field figure such as Fig. 3
It is shown, can be by aberration control in the range of less than 4%, distortion figure is as shown in figure 4, the curvature of field, distortion are perfectly limited in
In the effective range of human eye, without carrying out electronic calibration to image source.
In different embodiments, each lens optical working face face type equation can be any one in equation using being previously mentioned
It is individual, other face types can also be used, can be configured as needed.
In different embodiments, the quantity of free-form surface lens is at least 2, and the quantity of free-form surface mirror is 1 to 2
Piece, the quantity of free form surface half-reflecting half mirror is 1, free-form surface lens, free-form surface mirror, free form surface half-reflection and half-transmission
The order of mirror can be adjusted with real needs.
In preferred embodiment, half-reflecting half mirror is the sheet glass that two sides has same curvature radius, further increases it
Focal length, if half-reflecting half mirror is that thickness is 2mm, two sides has the sheet glass of same curvature radius, and focal length is more than 2000mm, reality
When scenery in the world reaches human eye by the lens of so big focal length, aberration will not be more introduced.
Disclosed herein is only preferred embodiment of the present utility model, and this specification is chosen and specifically describes these implementations
Example, is to preferably explain principle and practical application of the present utility model, is not to restriction of the present utility model.Any
The modifications and variations that art personnel are done in the range of specification, it all should fall in the range of the utility model is protected.
Claims (12)
- A kind of 1. big visual field refraction-reflection type free form surface augmented reality optical system of big emergent pupil, it is characterised in that including：No less than 2 The free surface lens of piece, speculum, 1 free form surface half-reflecting half mirror and the image display for being not more than 2；The light that described image display is sent is after the reflection between free surface lens, afterwards into speculum, then passes through Cross speculum and reflex to free form surface half-reflecting half mirror, be finally reflected into human eye by free form surface half-reflecting half mirror.
- 2. a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil according to claim 1, it is special Sign is：A kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil includes：First free form surface mirror Piece, the second free surface lens, a speculum, a free form surface half-reflecting half mirror and image display；The light that described image display is sent reflexes to the second free surface lens by the first free surface lens, by Two free surface lens reflex to speculum, then reflex to free form surface half-reflecting half mirror by speculum, finally by freely Curved surface half-reflecting half mirror is reflected into human eye.
- 3. a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil according to claim 2, it is special Sign is：First free surface lens are provided with the first optics working face and the second optics working face, and described second freely Curve lens are provided with the 3rd optics working face and the 4th optics working face, and the free form surface half-reflecting half mirror is provided with the 5th Optics working face and the 6th optics working face；The light that described image display is sent is refracted to by the first optics working face Two optics working faces, then through the second optics work surface to the first optics working face, then be refracted to through the first optics working face 3rd optics working face, then the 4th optics working face is refracted to through the 3rd optics working face, then through the 4th optics work surface Speculum is refracted to the 3rd optics working face, then through the 3rd optics working face, then the work of the 5th optics is reflexed to through speculum Face, then the 6th optics working face is refracted to through the 5th optics working face, then through the 6th optics work surface to the 5th optics work Make face, be most refracted to human eye through the 5th optics working face afterwards.
- 4. a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil according to claim 3, it is special Sign is：At least one in the first optics working face and the second optics working face is free form surface.
- 5. a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil according to claim 3, it is special Sign is：The first optics working face plates anti-reflection film, the second optics working face plating high-reflecting film.
- 6. a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil according to claim 3, it is special Sign is：At least one in the 3rd optics working face and the 4th optics working face is free form surface.
- 7. a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil according to claim 3, it is special Sign is：The 3rd optics working face plates anti-reflection film, the 4th optics working face plating high-reflecting film.
- 8. a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil according to claim 3, it is special Sign is：Speculum is free form surface.
- 9. a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil according to claim 3, it is special Sign is：At least one in the 5th optics working face and the 6th optics working face is free form surface.
- 10. a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil according to claim 9, it is special Sign is：The 5th optics working face and the 6th optics working face are equidistant free form surface.
- 11. a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil according to claim 3, it is special Sign is：5th optics working face plates part reflective semitransparent film, the 6th optics working face plating antireflective film.
- 12. a kind of big big visual field refraction-reflection type free form surface augmented reality optical system of emergent pupil according to claim 2, it is special Sign is：The position interchangeable of described two free surface lens, speculum and free form surface half-reflecting half mirror.
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| CN201720600081.8U CN207081878U (en) | 2017-05-26 | 2017-05-26 | A kind of big visual field refraction-reflection type free form surface augmented reality optical system of big emergent pupil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976792A (en) * | 2017-05-26 | 2018-05-01 | 上海影创信息科技有限公司 | A kind of big visual field refraction-reflection type free form surface augmented reality optical system of big emergent pupil |
| CN117908253A (en) * | 2023-12-28 | 2024-04-19 | 物芯智能科技有限公司 | Distortion-free compact off-axis near-to-eye display optical system |
-
2017
- 2017-05-26 CN CN201720600081.8U patent/CN207081878U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976792A (en) * | 2017-05-26 | 2018-05-01 | 上海影创信息科技有限公司 | A kind of big visual field refraction-reflection type free form surface augmented reality optical system of big emergent pupil |
| CN117908253A (en) * | 2023-12-28 | 2024-04-19 | 物芯智能科技有限公司 | Distortion-free compact off-axis near-to-eye display optical system |
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