CN106501943B - A kind of eyepiece optical system for wearing display equipment - Google Patents
A kind of eyepiece optical system for wearing display equipment Download PDFInfo
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- CN106501943B CN106501943B CN201710005763.9A CN201710005763A CN106501943B CN 106501943 B CN106501943 B CN 106501943B CN 201710005763 A CN201710005763 A CN 201710005763A CN 106501943 B CN106501943 B CN 106501943B
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- lens
- negative lens
- optical system
- display equipment
- eyepiece
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- 230000003287 optical effect Effects 0.000 title claims abstract description 41
- 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
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000010191 image analysis Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000006185 dispersion Substances 0.000 description 5
- 230000004075 alteration Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method 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
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- 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
- 230000003796 beauty Effects 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
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- 230000009977 dual effect Effects 0.000 description 1
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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 equipment, and being suitable for screen size is 4.5 inches to 5.5 inches, and resolution ratio is the display screen of 2k or 4k.The eyepiece system has very high image analysis ability, the high-resolution and DPI advantage of 4K screen can not only be given full play to, and field angle is up to 64 °, silent frame is clear and close to undistorted, ray tracing distance is less than 75mm, is greatly reduced the volume and weight of entire glasses.This eyepiece optical system for wearing display equipment comprising: 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 close to display screen end.
Description
Technical field
The present invention relates to the technical fields of optical design, more particularly to a kind of eyepiece optics system for wearing display equipment
System.
Background technique
In recent years, capital and consumption market are returned again as VR, AR wear display equipment, it is relative hardware, soft
Part development technique also reaches its maturity.Optical eyepiece system most can intuitively reflect the structure of equipment performance, technology as hardware end
Advance directly determine the experience sense of consumer by.Currently, Oculus, HTC, Samsung are continuously proposed a plurality of VR in the world
Big field angle glasses, domestic 3Glass, storm wind, happy phase, followed by ant view.But all VR glasses mentioned above are adopted substantially
With identical optical eyepiece scheme, i.e., monolithic is 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 is serious, image excessively asking close to human eye
Topic.Although VR equipment vendor generally bottom and corrects the above problem in conjunction with 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 to optical eyepiece in the CV1 version glasses that this year is released, using aspherical and Fresnel
The eyepiece of plane coupling largely solves the problems, such as that dispersion, distortion are serious, but its peripheral field is fuzzy, image excessively
It is not solved perfectly still close to the problem of human eye.In addition, storm wind is proposed the glasses of a leading viewing experience, but its visual field
Angle is smaller, and resolution ratio is lower, and eyepiece system ray tracing distance is too long, these cannot all promote to achieve the ultimate attainment viewing of high definition
Effect.
And with the release of 4K resolution ratio high-definition display screen, the eyepiece system for wearing display equipment is proposed higher
Optical resolution requirement.
Summary of the invention
Technology of the invention solves the problems, such as: overcoming the deficiencies of the prior art and provide a kind of eyepiece for wearing display equipment
Optical system, it is 4.5 inches to 5.5 inches which, which is suitable for screen size, and resolution ratio is the display screen of 2K or 4K,
With very high image analysis ability, the high-resolution and DPI advantage of 4K display screen, and field angle can not only be given full play to
Up to 64 °, silent frame is clear and close to undistorted, and ray tracing distance is greatly reduced the body of entire glasses less than 75mm
Long-pending and weight.
The technical solution of the invention is as follows: this eyepiece optical system for wearing display equipment comprising: 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, negative lens
Material be optical grade PC, positive negative lens is discretely located, and negative lens is close to display screen end.
Since the eyepiece optical system for wearing display equipment includes: that a piece of biconvex aspherical positive lens, a piece of concave-concave are non-
Spherical surface 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 big field angle；Negative lens is for shortening ray tracing road
Journey, compensation dispersion, the correction curvature of field and distortion；It is aspherical to be used to correct large aperture and the big various aberrations of field angle bring, it realizes
High optical resolution；Therefore the high-resolution and DPI advantage of 4K display screen can not only be given full play to, and field angle is high
Up to 64 °, silent frame is clear and close to undistorted, and ray tracing distance is greatly reduced the volume of entire glasses less than 75mm
And weight.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the eyepiece optical system (monocular) according to the present invention for wearing display equipment.
Fig. 2 is the ray tracing schematic diagram of the eyepiece optical system (monocular) according to the present invention for wearing display equipment；
Fig. 3 is the curvature of field/distortion schematic diagram of the eyepiece optical system according to the present invention for wearing display equipment.
Fig. 4 is the aberration curve schematic diagram of the eyepiece optical system according to the present invention for wearing display equipment.
Fig. 5 is the dispersion curve schematic diagram of the eyepiece optical system according to the present invention for wearing display equipment.
Fig. 6 is the point range figure of the eyepiece optical system according to the present invention for wearing display equipment.
Specific embodiment
As shown in Figure 1, this eyepiece optical system for wearing display equipment, includes: that a piece of biconvex is aspherical from left to right
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, the material of negative lens
For optical grade PC, positive negative lens is discretely located.
Since the eyepiece optical system for wearing display equipment includes: that a piece of biconvex aspherical positive lens, a piece of concave-concave are non-
Spherical surface 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 close to display screen end；The effect of positive lens is to be converged to as light beam, realizes big field angle；It is negative
Lens are for shortening ray tracing distance, compensation dispersion, the correction curvature of field and distortion；It is aspherical to be used to correct large aperture and big visual field
The various aberrations of angle bring, realize high optical resolution；Therefore the high-resolution of 4K display screen can not only be given full play to
With DPI advantage, and field angle is up to 64 °, and silent frame is clear and close to undistorted, and ray tracing distance is less than 75mm, greatly
The volume and weight for reducing entire glasses.
Preferably, as shown in table 1, the eyepiece optical system parameter for wearing display equipment, focal length 60mm, field angle are
64 °, exit pupil diameter 8mm, distance of exit pupil 20mm.
Table 1
Preferably, as shown in table 2, the structural parameters for wearing display equipment eyepiece system, the first face of the positive lens
Curvature is 0.016211mm-1, 12.3238mm is divided between Conic 0.0285, with the second face of the positive lens；It is described just
Second face curvature of lens is -0.043304mm-1, Conic is divided between -1.8613, with the first face of the negative lens
20.0237mm；First face curvature of the negative lens is -0.039718mm-1, Conic is -0.4368, with the negative lens
2.5mm is divided between second face；Second face curvature of the negative lens is 0.012824mm-1, Conic is -0.4775, and described
20.246mm is divided between display screen.
Table 2
Note: the asphericity coefficient of positive and negative lenses is not provided in table 2；
Preferably, this wears the eyepiece optical system of display equipment using 5.5 " TFT LCD screen of 4K.
Illustrate the present invention more thoroughly below.
Eyepiece lens optical parameter of the present invention is as shown in table 1:
Positive lens undertakes main diopter, and calculation formula is following (in air):
Wherein,For lens strength, n lens material refractive index, ρ1, ρ2Respectively the curvature of lens front and rear surfaces, d are
Lens center thickness；
The power calculation formula of negative lens is identical with positive lens；
Total diopter of separate type two panels lens are as follows:
Wherein,For total diopter of two panels lens,The dioptric of respectively first lens, second lens
Degree, interval of the d between lens；
The focal length of eyepiece system are as follows:
Wherein, f is the focal length of eyepiece system,For total diopter of eyepiece system；
The field angle of eyepiece system are as follows:
Wherein, 2 θ are the field angle of eyepiece system, and y is the image planes height of eyepiece system, and f is the focal length of eyepiece system；
After determining screen size, image planes height y is determined immediately, by above-mentioned formula calculate eyepiece system focal length and
Total diopter；
For separating dual thin lens, achromatism condition are as follows:
Wherein, h1, h2The height of lens surface is incident on for light；v1, v2The respectively Abbe of positive and negative lenses
Number,The respectively diopter of positive and negative lenses；
For eyepiece system, h1It is determining, h2It is determined by following formula:
Another expression-form of total diopter of eyepiece system are as follows:
For eyepiece system, after the material of selected positive and negative lenses, Abbe number v1, v2It determines immediately；According to mesh
The field angle of mirror system requirements determines total diopterAbove-mentioned three formula (5) (6) (7) of simultaneous, can successively determineWith
h2；Finally, determining the initial structure parameter of each eyeglass according to formula (1).
Above-mentioned initial structure parameter is inputted into optical imagery simulation software, and the surface face type of positive and negative lenses is set
It is set to even aspheric surface face type, is optimized according to aberration optimum theory, the final entire infrastructure parameter for determining eyepiece system.
Even aspheric surface face type formula is as follows:
Wherein, z is the rise of aspherical target point, and Y is the radial radius of target point, and R is benchmark spherical radius, and k is non-
Spherical surface quadratic coefficients, Ai(i=2,4,6 ... 16) be i rank asphericity coefficient；The relative distortion of eyepiece system are as follows:
Wherein, q is the relative distortion of eyepiece system, and Y is practical image height, and y is ideal image height；
The ray tracing distance of eyepiece system are as follows:
L=P1-P0Formula (10)
Wherein, L is the ray tracing distance of eyepiece system, P1For image planes position, P0For entrance pupil position；
The eyepiece camera lens for the big field angle short distance trace shown for ultrahigh resolution that the present invention designs, field angle reach
64 °, it is equivalent to the huge curtain that distance 20m watches about 1000 inches at a distance, silent frame high definition is shown, close to zero distortion, due to eyepiece
System light trace distance about 75mm, so that glasses compact overall structure, center of gravity improves wear comfort and beauty close to human eye
Degree.
Same goal of the invention can be able to achieve in the presence of three kinds of technical solutions once:
1) on the basis of goggle structure of the present invention, the face type ginseng of lens materials or slight change eyeglass is modified
Interval between number, or slight adjustment lens.
It 2) is Fresnel surface type by a certain aspherical face skin-care on the basis of goggle structure of the present invention, and
Interval between the face shape parameter and lens of appropriate optimization remaining surface.
3) monolithic free-form surface lens are used, or on the basis of goggle structure of the present invention, it will be a certain aspherical
Face skin-care is free-curved-surface-type, and the interval between the face shape parameter and lens of suitably optimization remaining surface.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, it is all according to
According to technical spirit any simple modification, equivalent change and modification to the above embodiments of the invention, still belong to the present invention
The protection scope of technical solution.
Claims (3)
1. a kind of eyepiece optical system for wearing display equipment, it is characterised in that: comprising: 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
Grade PC, positive negative lens is discretely located, and negative lens is close to display screen end；
This wear display equipment eyepiece optical system focal length be 60mm, field angle be 64 °, exit pupil diameter 8mm, emergent pupil away from
From for 20mm；
First face curvature of the positive lens is 0.016211mm-1, Conic 0.0285, with the second face of the positive lens
Between be divided into 12.3238mm；Second face curvature of the positive lens is -0.043304mm-1, Conic is -1.8613, is born with described
20.0237mm is divided between first face of lens；First face curvature of the negative lens is -0.039718mm-1, Conic be-
2.5mm is divided between 0.4368, with the second face of the negative lens；Second face curvature of the negative lens is 0.012824mm-1,
It is 20.246mm that Conic, which is at a distance from -0.4775, with the display screen,.
2. the eyepiece optical system according to claim 1 for wearing display equipment, the screen size for being included is 5.5
Inch, resolution ratio 4K, material are TFT LCD.
3. the eyepiece optical system according to claim 2 for wearing display equipment, it is characterised in that: this wears display equipment
Eyepiece optical system be suitable for having a size of 4.5 inches to 5.5 inches, resolution ratio is the display screen of 2k or 4k.
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| Application Number | Priority Date | Filing Date | Title |
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| 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 CN106501943A (en) | 2017-03-15 |
| CN106501943B true CN106501943B (en) | 2019-03-01 |
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Families Citing this family (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 |
| CN107632388B (en) * | 2017-10-24 | 2024-04-02 | 歌尔光学科技有限公司 | Eyepiece and head-mounted display device |
| CN110727101B (en) * | 2018-07-16 | 2022-08-02 | 玉晶光电股份有限公司 | Eyepiece optical system |
| JP7215220B2 (en) | 2018-07-31 | 2023-01-31 | ソニーグループ株式会社 | Display device |
| WO2020026749A1 (en) * | 2018-07-31 | 2020-02-06 | ソニー株式会社 | Display device |
| CN109521553A (en) * | 2018-12-26 | 2019-03-26 | 广东思锐光学股份有限公司 | A kind of 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 |
| 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 |
| 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 |
| CN115097614B (en) * | 2022-08-24 | 2022-12-09 | 江西联昊光电有限公司 | Optical system and VR equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614851A (en) * | 2015-01-26 | 2015-05-13 | 青岛歌尔声学科技有限公司 | Head-mounted eyepiece system and head-mounted display device |
| CN104635333A (en) * | 2015-01-26 | 2015-05-20 | 青岛歌尔声学科技有限公司 | Eyepiece, headset eyepiece system and micro-display headset equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3382683B2 (en) * | 1993-10-22 | 2003-03-04 | オリンパス光学工業株式会社 | Concentric optical system |
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2017
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614851A (en) * | 2015-01-26 | 2015-05-13 | 青岛歌尔声学科技有限公司 | Head-mounted eyepiece system and head-mounted display device |
| CN104635333A (en) * | 2015-01-26 | 2015-05-20 | 青岛歌尔声学科技有限公司 | Eyepiece, headset eyepiece system and micro-display headset equipment |
| CN106249399A (en) * | 2015-01-26 | 2016-12-21 | 歌尔科技有限公司 | One is worn eyepiece system and wears display device |
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Effective date of registration: 20240116 Address after: 361000 room 4101, No. 131, xinjingdongli, Haicang District, Xiamen City, Fujian Province Patentee after: Xiamen Jiupin sesame Information Technology Co.,Ltd. Address before: Room 801-810L-261, Building 1, No. 3 Haidian Street, Haidian District, Beijing, 100080 Patentee before: BEIJING HISPOT TECHNOLOGY CO.,LTD. |