CN106501943A - A kind of eyepiece optical system for wearing display device - Google Patents
A kind of eyepiece optical system for wearing display device Download PDFInfo
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- CN106501943A CN106501943A CN201710005763.9A CN201710005763A CN106501943A CN 106501943 A CN106501943 A CN 106501943A CN 201710005763 A CN201710005763 A CN 201710005763A CN 106501943 A CN106501943 A CN 106501943A
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- Prior art keywords
- lens
- display device
- negative lens
- optical system
- eyepiece
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000003287 optical effect Effects 0.000 title claims abstract description 43
- 230000000007 visual effect Effects 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 16
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 6
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 6
- 210000001747 pupil Anatomy 0.000 claims description 5
- 239000011521 glass Substances 0.000 abstract description 9
- 238000010191 image analysis Methods 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 description 5
- 230000004075 alteration Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 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
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The present invention discloses a kind of eyepiece optical system for wearing display device, it is adaptable to which screen size is 4.5 inches to 5.5 inches, display screen of the resolution ratio for 2k or 4k.The eyepiece system has very high image analysis ability, the high-resolution and DPI advantages of 4K screens, and up to 64 ° of the angle of visual field can not only be given full play to, silent frame is clear and is close to undistorted, ray tracing distance is greatly reduced the volume and weight of whole glasses less than 75mm.This eyepiece optical system for wearing display device, which includes：A piece of biconvex aspherical positive lens, the aspherical negative lens of a piece of concave-concave, lens barrel, display screen；The material of positive lens is optical grade PMMA, and the material of negative lens is optical grade PC, and positive negative lens is discretely located, and negative lens is near display screen end.
Description
Technical field
The present invention relates to the technical field of optical design, more particularly to a kind of eyepiece opticses system for wearing display device
System.
Background technology
In recent years, capital and consumption market returned again as VR, AR wear display device, relative hardware, soft
Part development technique also reaches its maturity.Optical eyepiece system most can intuitively reflect the structure of equipment performance, its technology as hardware end
Advance directly determine that the experience sense of consumer is received.At present, Oculus, HTC, Samsung are continuously proposed many money VR in the world
Big angle of visual field glasses, the 3Glass of the country, storm wind, happy phase, ant regard followed by.But all VR glasses mentioned above are adopted substantially
With identical optical eyepiece scheme, i.e. monolithic be aspherical or monolithic Fresnel Lenses.Either monolithic is aspherical or more
Advanced monolithic Fresnel Lenses can all have that peripheral field is fuzzy, dispersion/distortion seriously, image excessively press close to asking for human eye
Topic.Although VR equipment vendors generally bottom are corrected to the problems referred to above with reference to various algorithms by optimizing hardware, correct
Scheme not only increases the design complexity of hardware bottom layer, and limited to the improvement of optical effect.
Oculus is made that optimization in the CV1 version glasses that this year is released to optical eyepiece, using aspherical and Fresnel
The eyepiece of plane coupling, largely solve the problems, such as dispersion, distort serious, but its peripheral field is fuzzy, image excessively
The problem for pressing close to human eye does not still have perfect solution.In addition, storm wind is proposed the glasses of a leading viewing experience, but its visual field
Angle is less, and resolution ratio is relatively low, and eyepiece system ray tracing distance is long, and these can not all promote to achieve the ultimate attainment viewing of high definition
Effect.
And the release with 4K resolution ratio high-definition display screens, the eyepiece system for wearing display device is proposed higher
Optical resolution is required.
Content of the invention
The present invention technology solve problem be：Overcome the deficiencies in the prior art, there is provided a kind of eyepiece for wearing display device
Optical system, it is 4.5 inches to 5.5 inches that the eyepiece system is applied to screen size, display screen of the resolution ratio for 2K or 4K, its
There is very high image analysis ability, the high-resolution and DPI advantages of 4K display screens, and the angle of visual field can not only be given full play to
Up to 64 °, silent frame is clear and is close to undistorted, and ray tracing distance is less than 75mm, is greatly reduced the body of whole glasses
Product and weight.
The present invention technical solution be：This eyepiece optical system for wearing display device, which includes：A piece of biconvex
Aspherical positive lens, the aspherical negative lens of a piece of concave-concave, lens barrel, display screen；The material of positive lens be optical grade PMMA, negative lens
Material be optical grade PC, positive negative lens is discretely located, and negative lens is near display screen end.
As the eyepiece optical system for wearing display device includes：A piece of biconvex aspherical positive lens, a piece of concave-concave are non-
Sphere negative lens；The material of positive lens is PMMA, and the material of negative lens is PC, and positive negative lens is discretely located and negative lens is close
Display screen end；The effect of positive lens is to be converged to as light beam, realizes the big angle of visual field；Negative lens is used for shortening ray tracing road
Journey, compensation dispersion, the correction curvature of field and distortion；Aspherical for correcting the various aberrations that large aperture and the big angle of visual field are brought, realize
High optical resolution；Therefore the high-resolution and DPI advantages of 4K display screens can not only be given full play to, and the angle of visual field is high
Up to 64 °, silent frame is clear and is close to undistorted, and ray tracing distance is less than 75mm, is greatly reduced the volume of whole glasses
And weight.
Description of the drawings
Fig. 1 is the structural representation of the eyepiece optical system (monocular) for wearing display device according to the present invention.
Fig. 2 is the ray tracing schematic diagram of the eyepiece optical system (monocular) for wearing display device according to the present invention；
Fig. 3 is the curvature of field/distortion schematic diagram of the eyepiece optical system for wearing display device according to the present invention.
Fig. 4 is the aberration curve schematic diagram of the eyepiece optical system for wearing display device according to the present invention.
Fig. 5 is the dispersion curve schematic diagram of the eyepiece optical system for wearing display device according to the present invention.
Fig. 6 is the point range figure of the eyepiece optical system for wearing display device according to the present invention.
Specific embodiment
As shown in figure 1, this eyepiece optical system for wearing display device, includes from left to right：A piece of biconvex is aspherical
Positive lens, the aspherical negative lens of a piece of concave-concave, lens barrel, display screen；The material of positive lens be optical grade PMMA, the material of negative lens
For optical grade PC, positive negative lens is discretely located.
As the eyepiece optical system for wearing display device includes：A piece of biconvex aspherical positive lens, a piece of concave-concave are non-
Sphere negative lens, lens barrel, display screen；The material of positive lens is optical grade PMMA, and the material of negative lens is optical grade PC, positive and negative
Mirror is discretely located, and negative lens is near display screen end；The effect of positive lens is to be converged to as light beam, realizes the big angle of visual field；Negative
Lens are used for shortening ray tracing distance, compensation dispersion, the correction curvature of field and distortion；Aspherical for correcting large aperture and big visual field
The various aberrations that angle is brought, realize high optical resolution；Therefore the high-resolution of 4K display screens can not only be given full play to
With DPI advantages, and up to 64 ° of the angle of visual field, silent frame clear and be close to undistorted, ray tracing distance less than 75mm, greatly
The volume and weight for reducing whole glasses.
Preferably, as shown in table 1, this wears the eyepiece optical system parameter of display device, and focal length is 60mm, and the angle of visual field is
64 °, exit pupil diameter is 8mm, and distance of exit pupil is 20mm.
Table 1
Preferably, as shown in table 2, this wears the structural parameters of display device eyepiece system, the first face of the positive lens
Curvature is 0.016211mm-1, Conic is 0.0285, with the second face of the positive lens at intervals of 12.3238mm；Described just
Second face curvature of lens is -0.043304mm-1, Conic be -1.8613, with the first face of the negative lens at intervals of
20.0237mm；First face curvature of the negative lens is -0.039718mm-1, Conic is -0.4368, with the negative lens
Second face at intervals of 2.5mm；Second face curvature of the negative lens is 0.012824mm-1, Conic is -0.4775, and described
Display screen at intervals of 20.246mm.
Table 2
Note：The asphericity coefficient of positive lens and negative lens is not given in table 2；
Preferably, the eyepiece optical system for wearing display device adopts 4K 5.5 " TFT LCD screens.
The present invention is described more thoroughly below.
Eyepiece lens optical parameter according to the present invention is as shown in table 1：
Positive lens undertakes main diopter, and computing formula is following (in air)：
Wherein,For lens strength, n lens material refractive indexes, ρ1, ρ2The curvature of respectively lens front and rear surfaces, d is
Lens center thickness；
The power calculation formula of negative lens is identical with positive lens；
Total diopter of separate type two panels lens is：
Wherein,For total diopter of two panels lens,Respectively first piece lens, the dioptric of second lens
Degree, d are the interval between lens；
The focal length of eyepiece system is：
Wherein, focal lengths of the f for eyepiece system,Total diopter for eyepiece system；
The angle of visual field of eyepiece system is：
Wherein, the angles of visual field of 2 θ for eyepiece system, image planes height of the y for eyepiece system, focal lengths of the f for eyepiece system；
When determine screen size after, image planes height y determines immediately, by above-mentioned formula calculate eyepiece system focal length and
Total diopter；
For separation dual thin lens, achromatism condition is：
Wherein, h1, h2For the height that light incides lens surface；v1, v2The Abbe of respectively positive lens and negative lens
Number,The diopter of respectively positive lens and negative lens；
For eyepiece system, h1It is to determine, h2Determined by following formula：
Total diopter another expression-form of eyepiece system is：
For eyepiece system, after the material of positive lens and negative lens is selected, its Abbe number v1, v2Determine immediately；According to mesh
The angle of visual field of mirror system requirements determines total diopterSimultaneous above-mentioned three formulas (5) (6) (7), you can successively determineWith
h2；Finally, the initial structure parameter of each eyeglass is determined according to formula (1).
By above-mentioned initial structure parameter input optical imagery simulation software, and the surface face type of positive lens and negative lens is set
The aspherical face type of even is set to, is optimized according to aberration optimum theory, the final entire infrastructure parameter for determining eyepiece system.
The aspherical face type formula of even is as follows：
Wherein, z is the rise of aspherical impact point, and Y is the radial direction radius of impact point, and spherical radius on the basis of R, k are non-
Sphere quadratic coefficients, Ai(i=2,4,6 ... 16) be i rank asphericity coefficients；The relative distortion of eyepiece system is：
Wherein, relative distortions of the q for eyepiece system, Y are actual image height, and y is preferable image height；
The ray tracing distance of eyepiece system is：
L=P1-P0Formula (10)
Wherein, ray tracing distances of the L for eyepiece system, P1For image planes position, P0For entrance pupil position；
The eyepiece camera lens of the big angle of visual field short distance trace shown for ultrahigh resolution of present invention design, the angle of visual field reach
64 °, equivalent to the huge curtain apart from 20m about 1000 inches of viewings at a distance, silent frame high definition shows, is close to zero distortion, due to eyepiece
System light trace distance about 75mm so that glasses compact overall structure, center of gravity improve wear comfort and attractive in appearance near human eye
Degree.
There are three kinds of technical schemes and may realize same goal of the invention：
1) on the basis of goggle structure according to the present invention, lens materials, or the face type ginseng of slight change eyeglass are changed
Interval between number, or slight adjustment lens.
2) on the basis of goggle structure according to the present invention, by a certain aspherical face skin-care be Fresnel surface type, and
Interval between the appropriate face shape parameter and lens for optimizing remaining surface.
3) monolithic free-form surface lens are adopted, or on the basis of goggle structure according to the present invention, will be a certain aspherical
Face skin-care is free-curved-surface-type, and suitably optimizes the interval between the face shape parameter and lens of remaining surface.
The above, is only presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention, every according to
According to any simple modification, equivalent variations and modification that the technical spirit of the present invention is made to above example, still belong to the present invention
The protection domain of technical scheme.
Claims (5)
1. a kind of eyepiece optical system for wearing display device, it is characterised in that：Which includes：A piece of biconvex aspherical positive lens,
The aspherical negative lens of a piece of concave-concave, lens barrel, display screen；The material of positive lens is optical grade PMMA, and the material of negative lens is optics
Level PC, positive negative lens is discretely located, and negative lens is near display screen end.
2. the eyepiece optical system for wearing display device according to claim 1, it is characterised in that：This wears display device
Eyepiece optical system focal length be 60mm, the angle of visual field be 64 °, exit pupil diameter is 8mm, and distance of exit pupil is 20mm.
3. the eyepiece optical system for wearing display device according to claim 2, it is characterised in that：The of the positive lens
One face curvature is 0.016211mm-1, Conic is 0.0285, with the second face of the positive lens at intervals of 12.3238mm；Institute
The second face curvature for stating positive lens is -0.043304mm-1, Coni c are -1.8613, the interval with the first face of the negative lens
For 20.0237mm；First face curvature of the negative lens is -0.039718mm-1, Conic is -0.4368, with the negative lens
The second face at intervals of 2.5mm；Second face curvature of the negative lens is 0.012824mm-1, Conic is -0.4775, with institute
The distance for stating display screen is 20.246mm.
4. the eyepiece optical system for wearing display device according to claim 1, the screen size included by which are 5.5
Inch, resolution ratio are 4K, and material is TFT LCD.
5. the eyepiece optical system for wearing display device according to claim 4, it is characterised in that：This wears display device
Eyepiece optical system be applied to size be 4.5 inches to 5.5 inches, resolution ratio for 2k or 4k display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710005763.9A CN106501943B (en) | 2017-01-05 | 2017-01-05 | A kind of eyepiece optical system for wearing display equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710005763.9A CN106501943B (en) | 2017-01-05 | 2017-01-05 | A kind of eyepiece optical system for wearing display equipment |
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| CN106501943A true CN106501943A (en) | 2017-03-15 |
| CN106501943B CN106501943B (en) | 2019-03-01 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143570A (en) * | 2017-06-15 | 2019-01-04 | 北京海鲸科技有限公司 | A kind of eyepiece and wear display equipment |
| CN109375364A (en) * | 2018-12-26 | 2019-02-22 | 杭州有人光电技术有限公司 | A kind of 2K eyepiece optical system of virtual reality device |
| WO2019080325A1 (en) * | 2017-10-24 | 2019-05-02 | 歌尔科技有限公司 | Eyepiece and head mounted display device |
| CN110727101A (en) * | 2018-07-16 | 2020-01-24 | 玉晶光电股份有限公司 | Eyepiece optical system |
| WO2020026749A1 (en) * | 2018-07-31 | 2020-02-06 | ソニー株式会社 | Display device |
| JP2020024363A (en) * | 2018-07-31 | 2020-02-13 | ソニー株式会社 | Display device |
| WO2020133619A1 (en) * | 2018-12-26 | 2020-07-02 | 广东思锐光学股份有限公司 | External lens for mobile terminal |
| CN111494829A (en) * | 2019-06-26 | 2020-08-07 | 众安仕（北京）科技有限公司 | AR fire control face guard and use its AR fire control auxiliary display system |
| CN111699428A (en) * | 2019-06-26 | 2020-09-22 | 深圳市大疆创新科技有限公司 | Optical lens group, imaging system and wearable display device |
| CN115097614A (en) * | 2022-08-24 | 2022-09-23 | 江西联昊光电有限公司 | Optical system and VR equipment |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109143570A (en) * | 2017-06-15 | 2019-01-04 | 北京海鲸科技有限公司 | A kind of eyepiece and wear display equipment |
| US10928634B2 (en) | 2017-10-24 | 2021-02-23 | Goertek Technology Co., Ltd. | Eyepiece and head-mounted display device |
| WO2019080325A1 (en) * | 2017-10-24 | 2019-05-02 | 歌尔科技有限公司 | Eyepiece and head mounted display device |
| JP2020500318A (en) * | 2017-10-24 | 2020-01-09 | 歌爾科技有限公司ＧｏｅｒＴｅｋ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｔｄ． | Eyepiece and head mounted display |
| CN110727101A (en) * | 2018-07-16 | 2020-01-24 | 玉晶光电股份有限公司 | Eyepiece optical system |
| JP2020024363A (en) * | 2018-07-31 | 2020-02-13 | ソニー株式会社 | Display device |
| WO2020026749A1 (en) * | 2018-07-31 | 2020-02-06 | ソニー株式会社 | Display device |
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| JP7215220B2 (en) | 2018-07-31 | 2023-01-31 | ソニーグループ株式会社 | Display device |
| WO2020133619A1 (en) * | 2018-12-26 | 2020-07-02 | 广东思锐光学股份有限公司 | External lens for mobile terminal |
| CN109375364A (en) * | 2018-12-26 | 2019-02-22 | 杭州有人光电技术有限公司 | A kind of 2K eyepiece optical system of virtual reality device |
| CN111494829A (en) * | 2019-06-26 | 2020-08-07 | 众安仕（北京）科技有限公司 | AR fire control face guard and use its AR fire control auxiliary display system |
| CN111699428A (en) * | 2019-06-26 | 2020-09-22 | 深圳市大疆创新科技有限公司 | Optical lens group, imaging system and wearable display device |
| WO2020258063A1 (en) * | 2019-06-26 | 2020-12-30 | 深圳市大疆创新科技有限公司 | Optical lens group, imaging system, and wearable display device |
| CN115097614A (en) * | 2022-08-24 | 2022-09-23 | 江西联昊光电有限公司 | Optical system and VR equipment |
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| Publication number | Publication date |
|---|---|
| CN106501943B (en) | 2019-03-01 |
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