CN106443967A - Battery of lenses, and virtual reality head mounted display visual system - Google Patents
Battery of lenses, and virtual reality head mounted display visual system Download PDFInfo
- Publication number
- CN106443967A CN106443967A CN201610819150.4A CN201610819150A CN106443967A CN 106443967 A CN106443967 A CN 106443967A CN 201610819150 A CN201610819150 A CN 201610819150A CN 106443967 A CN106443967 A CN 106443967A
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- China
- Prior art keywords
- lens
- front surface
- lens group
- battery
- lenses
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0035—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having three lenses
-
- 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
- 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
- G02B2027/0112—Head-up displays characterised by optical features comprising device for genereting colour display
- G02B2027/0116—Head-up displays characterised by optical features comprising device for genereting colour display comprising devices for correcting chromatic aberration
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention provides a battery of lenses. From an object side to an image side, the battery of lenses successively includes a first lens, a second lens and a third lens, wherein both the front surface and the back surface of the first lens are spherical surfaces; both the front surface and the back surface of the second lens are spherical surfaces; and the front surface of the third lens is a spherical surface, and the back surface of the third lens is an aspheric surface. Compared with the related technology, from the object side to the image side, the battery of lenses successively includes a first lens, a second lens and a third lens, wherein both the front surface and the back surface of the first lens are spherical surfaces; both the front surface and the back surface of the second lens are spherical surfaces; and the front surface of the third lens is a spherical surface, and the back surface of the third lens is an aspheric surface. Besides, the number of the lenses of the battery of lenses is only three. The battery of lenses can effectively eliminate chromatic aberration and improve the imaging quality, and also has the thin-type characteristic. The invention also provides a virtual reality head mounted display visual system applying the battery of lens.
Description
Technical field
The present invention relates to the virtual reality head of lens technical group field, more particularly to a kind of lens group and the application lens group
Conspicuous viewing system.
Background technology
Existing display (HMD, head mounted display) system of wearing uses one chip lens, so not
Evitable produce visual aberration effect.In theory, in aobvious system is worn, two kinds of hardware and software can be passed through
Mode carrys out correcting chromatic aberration, but the effect that actually software correction aberration can not reach, and therefore the present invention is proposed by design
A kind of apochromatic leanse is reaching visual system apochromatism purpose.
Therefore, it is necessary to provide a kind of new lens group solve the above problems.
Content of the invention
The technical problem to be solved in the invention is to provide a kind of lens group, and which can reach apochromatism purpose.
The invention provides a kind of lens group, is sequentially included to image side by thing side：
First lens, its front surface, rear surface are all sphere；
Second lens, its front surface, rear surface are all sphere；And
3rd lens, it is aspheric surface that its front surface is sphere, rear surface, the aspheric shape of the 3rd lens by with
Lower aspherical formula determines:
In formula, Z is coordinate of the aspheric surface in rise direction, and r is aspheric surface in vertical rise direction centered on summit
Coordinate, R0For vertex curvature radius, K is circular cone coefficient, α4For 4 asphericity coefficients and α6For 6 asphericity coefficients.
Preferably, the front surface of first lens, rear surface are all convex surface, the front surface of second lens, rear table
Face is all concave surface, and the front surface of the 3rd lens, rear surface are all convex surface.
Preferably, first lens, second lens and the 3rd lens are all made up of glass or plastics.
Preferably, first lens and the 3rd lens are all by CaF2Material is made, and second lens are by ZF1 glass system
Become.
Preferably, the radius of curvature of the front surface of the 3rd lens is R, to meet following relational expression：
100<R<250.
Preferably, the aspherical formula also meets following relational expression：
K<0, R0<0,α4<0,α6>0.
Present invention also offers a kind of conspicuous viewing system of virtual reality, the conspicuous viewing system application of the virtual reality is such as
Upper described lens group.
Compared with correlation technique, the lens group that the present invention is provided, which is sequentially included to image side by thing side：First lens, its
Front surface, rear surface are all sphere；Second lens, its front surface, rear surface are all sphere；And the 3rd lens, its front surface
It is aspheric surface for sphere, rear surface；Additionally, the number of lenses of the lens group of the present invention is only three, by above-mentioned configuration, permissible
Effectively color difference eliminating, lifts image quality, and can have the characteristic of slimming simultaneously concurrently.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to making needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, wherein：
Fig. 1 is lens group schematic diagram of the present invention；
Fig. 2 is lens group optical transfer function curve chart of the present invention；
Fig. 3 is lens group chromatic curve figure of the present invention；
Fig. 4 is lens group curvature of field curve chart of the present invention；
Fig. 5 is lens group distortion aberration curve chart of the present invention；
Fig. 6 is lens group point range figure of the present invention.
Specific embodiment
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described enforcement
Example is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
All other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
Fig. 1, Fig. 1 are referred to for lens group schematic diagram of the present invention.The lens group 1 sequentially includes first by thing side to image side
Lens 10, the second lens 11 and the 3rd lens 12, simple structure, small volume, can gather high-quality iris image, especially
Suitable for the conspicuous viewing system of virtual reality, wherein：
The front surface 100 of first lens 10, rear surface 101 are all convex surface, and its front surface 100, rear surface 101 are all
For sphere；
The front surface 110 of second lens 11, rear surface 111 are all concave surface, and its front surface 110, rear surface 111 are all
For sphere；And
The front surface 120 of the 3rd lens 12, rear surface 121 are all convex surface, and its front surface 120 is sphere, rear table
Face 121 is aspheric surface, and the aspheric shape of the 3rd lens 12 is determined by following aspherical formula:
In formula, Z is coordinate of the aspheric surface in rise direction, and r is aspheric surface in vertical rise direction centered on summit
Coordinate, R0For vertex curvature radius, K is circular cone coefficient, α4For 4 asphericity coefficients and α6For 6 asphericity coefficients.
Fig. 1 and Fig. 2, Fig. 2 are seen also for lens group optical transfer function curve chart of the present invention.The institute that the present invention is provided
State lens group 1, its optical transfer function MTF be 10 lines under MTF, the more smooth and numerical value of curve shows system closer to 1
Image quality better；The curve of 0 °, 9 °, 18 °, 27 °, 36 °, 45 ° visual field is drawn in Fig. 2 respectively, can from curve chart
Go out, transfer curve is smoother, aberration is preferably corrected.
As a modification of the present invention, first lens 10, second lens 11 and the 3rd lens 12
Material can be all glass or plastics, if the material of lens is the degree of freedom that glass, can increase system complications power configuration, if thoroughly
Mirror material is plastics, then can effectively reduce production cost.
As three lens have apochromatism function, therefore, first lens 10, second lens 11 and institute
The combination for stating the 3rd lens 12 can be while the aberration of the reddish yellow three kinds of wavelength of indigo plant that disappear, improves visual system aberration reducing power.At this
In preferred embodiment of the invention, first lens 10 and the 3rd lens 12 are all by CaF2Material is made, second lens 11
It is made up of ZF1 glass, the combination of this several concrete material, with excellent apochromatism characteristic.Specifically referring to Fig. 3, Fig. 3 is
Lens group chromatic curve figure of the present invention.Wherein, curve I indicates the difference of shortwave focal length and long wave focal length, and curve II indicates shortwave
Focal length and the difference with reference to long wave focal length, it can be seen that aberration very little, for visual system, the aberration will not be obvious by naked eyes
Discover.
Used as the another kind improvement of the present invention, the radius of curvature of the front surface 120 of the 3rd lens 12 is R, under satisfaction
Face relational expression：100<R<250.The rear surface 121 of the 3rd lens 12 is set to aspheric surface, as aspheric surface easily can be made
The shape being made beyond sphere, obtains more controlled variable, in order to color difference eliminating, and then reduces the number that lens are used, because
This can effectively reduce the optics total length of lens group of the present invention 1.The aspherical formula also meets following relational expression：K<0, R0
<0,α4<0,α6>0.The particular combination of these parameters can just reach predetermined good result.
Refer to the curvature of field curve chart of Fig. 4, Fig. 4 for lens group of the present invention.The difference of meridianal curvature of field and Sagittal field curvature is system
Astigmatism, the aberration of the curvature of field and the outer field rays of astigmatism impact system axle, difference is crossed conference and has a strong impact on the outer axial ray of system
Image quality.From curve chart as can be seen that in the range of full filed, the curvature of field of system meridianal curvature of field and each light of Sagittal field curvature
Aberration is all controlled within zone of reasonableness.
Refer to the distortion aberration curve chart of Fig. 5, Fig. 5 for lens group of the present invention.Distortion does not interfere with the definition of system,
Only system anamorphose can be caused.From curve chart as can be seen that in the range of full filed, the distortion aberration very little of system.
Refer to the point range figure of Fig. 6, Fig. 6 for lens group of the present invention.Point range figure is shown that each field rays of system exist
The disc of confusion for converging at image planes and being formed, is the general performance of the relevant various aberrations of system, the root mean square radii in point range figure
Less proof system image quality is better.In point range figure, abscissa unit is millimeter, represents image height；Vertical coordinate unit is micron,
Represent the size of point radius, it can be seen that disc of confusion radius size is in the range of rational image quality.
Present invention also offers a kind of virtual reality for applying lens group 1 described above is conspicuous viewing system (not shown),
The conspicuous viewing system of the virtual reality realizes apochromatism by applying the lens group 1, visually becomes so as to be obviously improved which
As quality.
Compared with correlation technique, the lens group 1 that the present invention is provided sequentially is included to image side by thing side：Described first is saturating
Mirror 10, its front surface 100, rear surface 101 are all sphere；Second lens 11, its front surface 110, rear surface 111 are all ball
Face；And the 3rd lens 12, its front surface 120 is sphere, rear surface 121 is aspheric surface；Additionally, the institute that the present invention is provided
The number of lenses for stating lens group 1 is only three, by above-mentioned configuration, can effective color difference eliminating, lift image quality, and can be together
When have the characteristic of slimming concurrently.
Embodiments of the invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (7)
1. a kind of lens group, it is characterised in that sequentially included to image side by thing side：
First lens, its front surface, rear surface are all sphere；
Second lens, its front surface, rear surface are all sphere；And
3rd lens, it is aspheric surface that its front surface is sphere, rear surface, and the aspheric shape of the 3rd lens is by following non-
Spherical formula determines:
In formula, Z is coordinate of the aspheric surface in rise direction, and r is coordinate of the aspheric surface in vertical rise direction centered on summit,
R0For vertex curvature radius, K is circular cone coefficient, α4For 4 asphericity coefficients, and α6For 6 asphericity coefficients.
2. lens group according to claim 1, it is characterised in that the front surface of first lens, rear surface are all convex
Face, the front surface of second lens, rear surface are all concave surface, and the front surface of the 3rd lens, rear surface are all convex surface.
3. lens group according to claim 1 and 2, it is characterised in that first lens, second lens and institute
State the 3rd lens to be all made up of glass or plastics.
4. lens group according to claim 3, it is characterised in that first lens and the 3rd lens are all by CaF2Material
Make, second lens are made up of ZF1 glass.
5. lens group according to claim 3, it is characterised in that the radius of curvature of the front surface of the 3rd lens is R,
Meet following relational expression：
100<R<250.
6. lens group according to claim 1, it is characterised in that the aspherical formula also meets following relational expression：
K<0, R0<0,α4<0,α6>0.
7. a kind of conspicuous viewing system of virtual reality, it is characterised in that the conspicuous viewing system application such as right of the virtual reality
Require the lens group described in 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610819150.4A CN106443967A (en) | 2016-09-13 | 2016-09-13 | Battery of lenses, and virtual reality head mounted display visual system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610819150.4A CN106443967A (en) | 2016-09-13 | 2016-09-13 | Battery of lenses, and virtual reality head mounted display visual system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106443967A true CN106443967A (en) | 2017-02-22 |
Family
ID=58168707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610819150.4A Pending CN106443967A (en) | 2016-09-13 | 2016-09-13 | Battery of lenses, and virtual reality head mounted display visual system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106443967A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018553A (en) * | 2019-02-28 | 2019-07-16 | 苏州科技大学 | A kind of optical lens for virtual implementing helmet |
| CN111853699A (en) * | 2020-08-28 | 2020-10-30 | 广东烨嘉光电科技股份有限公司 | Large-aperture three-piece lens optical lens |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4348081A (en) * | 1979-09-05 | 1982-09-07 | U.S. Precision Lens Inc. | Projection lens |
| DE4133738A1 (en) * | 1990-10-12 | 1992-04-30 | Asahi Optical Co Ltd | COPY LENS SYSTEM |
| CN203502653U (en) * | 2013-09-17 | 2014-03-26 | 东莞市旭业光电科技有限公司 | Optical lens assembly |
| CN104730706A (en) * | 2013-12-20 | 2015-06-24 | 富士胶片株式会社 | Eyepiece optical system and imaging apparatus |
| CN105388609A (en) * | 2015-11-16 | 2016-03-09 | 厦门灵境信息科技有限公司 | Optical eyepiece lens and head-mounted display device |
-
2016
- 2016-09-13 CN CN201610819150.4A patent/CN106443967A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4348081A (en) * | 1979-09-05 | 1982-09-07 | U.S. Precision Lens Inc. | Projection lens |
| DE4133738A1 (en) * | 1990-10-12 | 1992-04-30 | Asahi Optical Co Ltd | COPY LENS SYSTEM |
| CN203502653U (en) * | 2013-09-17 | 2014-03-26 | 东莞市旭业光电科技有限公司 | Optical lens assembly |
| CN104730706A (en) * | 2013-12-20 | 2015-06-24 | 富士胶片株式会社 | Eyepiece optical system and imaging apparatus |
| CN105388609A (en) * | 2015-11-16 | 2016-03-09 | 厦门灵境信息科技有限公司 | Optical eyepiece lens and head-mounted display device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110018553A (en) * | 2019-02-28 | 2019-07-16 | 苏州科技大学 | A kind of optical lens for virtual implementing helmet |
| CN110018553B (en) * | 2019-02-28 | 2023-12-08 | 苏州科技大学 | Optical lens for virtual reality helmet |
| CN111853699A (en) * | 2020-08-28 | 2020-10-30 | 广东烨嘉光电科技股份有限公司 | Large-aperture three-piece lens optical lens |
| CN111853699B (en) * | 2020-08-28 | 2021-02-12 | 广东烨嘉光电科技股份有限公司 | Large-aperture three-piece lens optical lens |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |