CN208506365U - A kind of eyepiece optical system shown for micro display screen high definition - Google Patents
A kind of eyepiece optical system shown for micro display screen high definition Download PDFInfo
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- CN208506365U CN208506365U CN201821191763.9U CN201821191763U CN208506365U CN 208506365 U CN208506365 U CN 208506365U CN 201821191763 U CN201821191763 U CN 201821191763U CN 208506365 U CN208506365 U CN 208506365U
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Abstract
The utility model discloses a kind of eyepiece optical systems shown for micro display screen high definition, what common optical axis was arranged successively has first positive lens of the convex surface towards entrance pupil, with concave surface towards the second negative lens of entrance pupil, with convex surface towards the third positive lens of display screen, with convexo-convex 4th positive lens, with convex surface towards the 5th positive lens of entrance pupil and with concave surface towards the 6th negative lens of display screen, the third positive lens is towards entrance pupil when the while gluing with the second negative lens towards display screen, in current optical system, the effect of positive lens is to be converged to as optical path, realize big field angle, negative lens is for shortening ray tracing distance, compensate dispersion, correct the curvature of field and distortion, realize higher optical resolution, under conditions of shortening system length, it remains to possess good image quality and big field angle, This design field angle is greater than 46 °, and silent frame is clear and close to undistorted.
Description
Technical field
The utility model relates to optical mirror slip field, especially a kind of eyepiece optics system shown for micro display screen high definition
System.
Background technique
Virtual reality (Virtual Reality, VR) is that the void of a three-dimensional space is generated using computer technology emulation
The quasi- world provides user and emulates about sense organs such as vision, the sense of hearings, user is allowed to feel on the spot in person.Current existing VR device
It is all that the view of human eye is simulated by the slightly discrepant divided frame in two visual angles of corresponding right and left eyes based on visual experience
Difference, to reach perspective view.In order to reduce the volume of virtual reality device, user is allowed to be amplified by lesser display picture
Visual experience, with enlarging function eyepiece optical system at VR research and development one of theme.
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, ant view followed by.But all VR glasses mentioned above are basic
Using identical optical eyepiece scheme, i.e., monolithic is aspherical or monolithic Fresnel Lenses.Either monolithic it is aspherical or
More advanced monolithic Fresnel Lenses can all have fuzzy peripheral field, dispersion, distortion seriously, image excessively asking close to human eye
Topic.Although generally bottom and being corrected to the above problem in conjunction with various algorithms by optimizing hardware in VR equipment, correct
Scheme not only increases the design complexity of hardware bottom layer, and limited to the improvement of optical effect, and as 4K is differentiated
The release of rate high-definition display screen proposes higher optical resolution requirement to the eyepiece system for wearing display equipment.
Utility model content
In order to solve the above technical problems, the purpose of the utility model is to provide a kind of mesh shown for micro display screen high definition
Mirror optical system.
The technical solution adopted in the utility model is:
A kind of eyepiece optical system shown for micro display screen high definition has convex surface court including what common optical axis was arranged successively
To the first positive lens of entrance pupil, with concave surface towards the second negative lens of entrance pupil, the third with convex surface towards display screen is just saturating
Mirror has convexo-convex 4th positive lens, towards the 5th positive lens of entrance pupil and has concave surface towards display screen with convex surface
The 6th negative lens, the third positive lens towards entrance pupil with the second negative lens towards display screen while it is glued.
4th positive lens of the eyepiece optical system is the equal glass spherical lens of two curvature radius values, for improving
The efficiency of production and assembly, the 5th positive lens and the 6th negative lens are plastic aspheric lens, for reducing weight and are mentioned
High image quality.
The focal length f of the eyepiece optical system is 14.8mm, and field angle is 46 °, exit pupil diameter 7mm, and distance of exit pupil is
18mm, optics overall length TTL are 42mm.
The focal length f1 of first positive lens meets 1 < f1/f < 2, and the focal length f2 of the second negative lens meets -2 < f2/f < -1,
The focal length f3 of third positive lens meets 1.5 < f3/f < 2.5, and the focal length f4 of the 4th positive lens meets 1.2 < f4/f < 2.2, and the 5th just
The focal length f5 of lens meets 1.2 < f5/f < 2.2, and the focal length f6 of the 6th negative lens meets -1.7 < f6/f < -0.7.
The air gap between first positive lens and the second negative lens on optical axis is T12, and the first positive lens center is thick
It spends T1 and meets 0 < T1/T12 < 2.5, the center thickness T4 of the 4th positive lens meets 0 < T4/T12 < 2.5.
The radius of curvature of one side of first positive lens towards entrance pupil is 17.048mm, towards the song of the one side of display screen
Rate radius is 539.918mm；The radius of curvature of second negative lens towards the one side of entrance pupil is -17.628mm；Third positive lens court
Radius of curvature to the one side of entrance pupil is -88.586mm, and the radius of curvature towards the one side of display screen is -19.594mm；4th
Positive lens towards entrance pupil one side radius of curvature be 45.637mm, towards display screen one side radius of curvature be-
45.537mm；The radius of curvature of 5th positive lens towards the one side of entrance pupil is 10.533mm, towards the curvature of the one side of display screen
Radius is 42.758mm；The radius of curvature of 6th negative lens towards the one side of entrance pupil is 24.769mm, towards the one side of display screen
Radius of curvature be 7.548mm.
The utility model has the beneficial effects that
In current optical system, the effect of positive lens is to be converged to as optical path, realizes big field angle, negative lens is used for
Shorten ray tracing distance, compensation dispersion, the correction curvature of field and distortion, realize higher optical resolution, shortens system length
Under conditions of, remain to possess good image quality and big field angle, this design field angle is greater than 46 °, silent frame it is clear and
Close to undistorted.
Detailed description of the invention
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is spherical aberration schematic diagram on the axis of the utility model；
Fig. 3 is the chromatic longitudiinal aberration schematic diagram of the utility model；
Fig. 4 is the point range figure schematic diagram of the utility model；
Fig. 5 is the relative illumination schematic diagram of the utility model；
Fig. 6 is the curvature of field and distortion schematic diagram of the utility model.
Specific embodiment
As shown in Figure 1, a kind of eyepiece optical system shown for micro display screen high definition, is arranged successively including common optical axis
With convex surface towards the first positive lens 1 of entrance pupil 7, with concave surface towards the second negative lens 2 of entrance pupil 7, have convex surface direction aobvious
The third positive lens 3 of display screen 8, have convexo-convex 4th positive lens 4, with convex surface towards entrance pupil 7 the 5th positive lens 5 and
With concave surface towards the 6th negative lens 6 of display screen 8, one side and second negative lens 2 of the third positive lens 3 towards entrance pupil 7
One side towards display screen 8 is glued.
4th positive lens 4 of the eyepiece optical system is the equal glass spherical lens of two curvature radius values, for mentioning
The efficiency of height production and assembly, the 5th positive lens 5 and the 6th negative lens 6 are plastic aspheric lens, for reducing weight
With raising image quality, this two groups of plastic aspheric lens all use plastic optics Shooting Technique to complete, improve production efficiency.
In current optical system, the effect of positive lens is to be converged to as optical path, realizes big field angle, negative lens is used for
Shorten ray tracing distance, compensation dispersion, the correction curvature of field and distortion, the 5th positive lens 5 and the 6th negative lens 6 and is all made of aspheric
Higher optical resolution is realized for correcting large aperture and the big various aberrations of field angle bring in face.
Table 1:
The parameters reference table 1 of the eyepiece optical system, in addition, the aspherical phase of the 5th positive lens and the 6th negative lens
Close numeric reference table 2.
Table 2:
Asphericity coefficient
The focal length f of the eyepiece optical system is 14.8mm, and field angle is 46 °, exit pupil diameter 7mm, and distance of exit pupil is
18mm, optics overall length TTL are 42mm.
The focal length f1 of first positive lens 1 meets 1 < f1/f < 2, the focal length f2 of the second negative lens 2 meet -2 < f2/f < -
1, the focal length f3 of third positive lens 3 meet 1.5 < f3/f < 2.5, and the focal length f4 of the 4th positive lens 4 meets 1.2 < f4/f < 2.2, the
The focal length f5 of five positive lens 5 meets 1.2 < f5/f < 2.2, and the focal length f6 of the 6th negative lens 6 meets -1.7 < f6/f < -0.7.
The air gap between first positive lens 1 and the second negative lens 2 on optical axis is T12,1 center of the first positive lens
Thickness T1 meets 0 < T1/T12 < 2.5, and the center thickness T4 of the 4th positive lens 4 meets 0 < T4/T12 < 2.5, in the utility model
In, T1 is 4.438mm, and T4 is 3.448mm；T12 is 2.7mm.
The radius of curvature of one side of first positive lens 1 towards entrance pupil 7 is 17.048mm, towards the one side of display screen 8
Radius of curvature be 539.918mm；The radius of curvature of second negative lens 2 towards the one side of entrance pupil 7 is -17.628mm；Third is just
Lens 3 towards entrance pupil 7 one side radius of curvature be -88.586mm, towards display screen 8 one side radius of curvature be -
19.594mm；The radius of curvature of 4th positive lens 4 towards the one side of entrance pupil 7 is 45.637mm, towards the song of the one side of display screen 8
Rate radius is -45.537mm；The radius of curvature of 5th positive lens 5 towards the one side of entrance pupil 7 is 10.533mm, towards display screen 8
One side radius of curvature be 42.758mm；The radius of curvature of 6th negative lens 6 towards the one side of entrance pupil 7 is 24.769mm, court
Radius of curvature to the one side of display screen 8 is 7.548mm.
The foregoing is merely the preferred embodiments of the utility model, the utility model is not limited to above-mentioned embodiment party
Formula, if with essentially identical means realize the utility model aim technical solution belong to the protection scope of the utility model it
It is interior.
Claims (6)
1. a kind of eyepiece optical system shown for micro display screen high definition, it is characterised in that: be arranged successively including common optical axis
With convex surface towards the first positive lens of entrance pupil, with concave surface towards the second negative lens of entrance pupil, have convex surface towards display screen
Third positive lens, there is convexo-convex 4th positive lens, have convex surface towards the 5th positive lens of entrance pupil and with concave surface
Towards the 6th negative lens of display screen, the third positive lens is towards one side and the second negative lens of entrance pupil towards the one of display screen
Face is glued.
2. a kind of eyepiece optical system shown for micro display screen high definition according to claim 1, it is characterised in that: should
4th positive lens of eyepiece optical system is the equal glass spherical lens of two curvature radius values, the 5th positive lens and the 6th
Negative lens is plastic aspheric lens.
3. a kind of eyepiece optical system shown for micro display screen high definition according to claim 1, it is characterised in that: should
The focal length f of eyepiece optical system is 14.8mm, and field angle is 46 °, exit pupil diameter 7mm, distance of exit pupil 18mm, optics overall length
TTL is 42mm.
4. a kind of eyepiece optical system shown for micro display screen high definition according to claim 3, it is characterised in that: institute
The focal length f1 for stating the first positive lens meets 1 < f1/f < 2, and the focal length f2 of the second negative lens meets -2 < f2/f < -1, third positive lens
Focal length f3 meet 1.5 < f3/f < 2.5, the focal length f4 of the 4th positive lens meets 1.2 < f4/f < 2.2, the focal length of the 5th positive lens
F5 meets 1.2 < f5/f < 2.2, and the focal length f6 of the 6th negative lens meets -1.7 < f6/f < -0.7.
5. a kind of eyepiece optical system shown for micro display screen high definition according to claim 1, it is characterised in that: institute
Stating the air gap between the first positive lens and the second negative lens on optical axis is T12, the first positive lens center thickness T1 meets 0 <
The center thickness T4 of T1/T12 < 2.5, the 4th positive lens meet 0 < T4/T12 < 2.5.
6. a kind of eyepiece optical system shown for micro display screen high definition according to claim 1, it is characterised in that: institute
The radius of curvature for stating the first positive lens towards the one side of entrance pupil is 17.048mm, and the radius of curvature towards the one side of display screen is
539.918mm；The radius of curvature of second negative lens towards the one side of entrance pupil is -17.628mm；Third positive lens is towards entrance pupil
Radius of curvature on one side is -88.586mm, and the radius of curvature towards the one side of display screen is -19.594mm；4th positive lens court
Radius of curvature to the one side of entrance pupil is 45.637mm, and the radius of curvature towards the one side of display screen is -45.537mm；5th just
The radius of curvature of lens towards the one side of entrance pupil is 10.533mm, and the radius of curvature towards the one side of display screen is 42.758mm；
The radius of curvature of 6th negative lens towards the one side of entrance pupil is 24.769mm, and the radius of curvature towards the one side of display screen is
7.548mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821191763.9U CN208506365U (en) | 2018-07-25 | 2018-07-25 | A kind of eyepiece optical system shown for micro display screen high definition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821191763.9U CN208506365U (en) | 2018-07-25 | 2018-07-25 | A kind of eyepiece optical system shown for micro display screen high definition |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965824A (en) * | 2020-08-26 | 2020-11-20 | 北京耐德佳显示技术有限公司 | Optical lens group and near-to-eye display system using same |
| CN112764221A (en) * | 2020-12-31 | 2021-05-07 | 深圳纳德光学有限公司 | Large-field-angle eyepiece optical system and head-mounted display device |
| WO2023279362A1 (en) * | 2021-07-09 | 2023-01-12 | 欧菲光集团股份有限公司 | Optical system, image capturing module and electronic device |
| WO2023236177A1 (en) * | 2022-06-10 | 2023-12-14 | 深圳纳德光学有限公司 | Eyepiece optical system and head-mounted display device |
-
2018
- 2018-07-25 CN CN201821191763.9U patent/CN208506365U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111965824A (en) * | 2020-08-26 | 2020-11-20 | 北京耐德佳显示技术有限公司 | Optical lens group and near-to-eye display system using same |
| CN111965824B (en) * | 2020-08-26 | 2023-02-10 | 北京耐德佳显示技术有限公司 | Optical lens group and near-to-eye display system using same |
| CN112764221A (en) * | 2020-12-31 | 2021-05-07 | 深圳纳德光学有限公司 | Large-field-angle eyepiece optical system and head-mounted display device |
| CN112764221B (en) * | 2020-12-31 | 2024-05-28 | 深圳纳德光学有限公司 | Eyepiece optical system with large field angle and head-mounted display device |
| WO2023279362A1 (en) * | 2021-07-09 | 2023-01-12 | 欧菲光集团股份有限公司 | Optical system, image capturing module and electronic device |
| WO2023236177A1 (en) * | 2022-06-10 | 2023-12-14 | 深圳纳德光学有限公司 | Eyepiece optical system and head-mounted display device |
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