CN106405819A - Eyepiece lens and head-mounted optical system - Google Patents
Eyepiece lens and head-mounted optical system Download PDFInfo
- Publication number
- CN106405819A CN106405819A CN201610834704.8A CN201610834704A CN106405819A CN 106405819 A CN106405819 A CN 106405819A CN 201610834704 A CN201610834704 A CN 201610834704A CN 106405819 A CN106405819 A CN 106405819A
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- China
- Prior art keywords
- lens
- optical system
- refractive index
- minus lenses
- abbe number
- Prior art date
- 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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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B25/00—Eyepieces; Magnifying glasses
- G02B25/001—Eyepieces
-
- 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
- G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
-
- 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
-
- 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
-
- 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
-
- 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
- G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
Abstract
The invention discloses an eyepiece lens and a head-mounted optical system. The eyepiece lens comprises four lenses, which are, against the light incident side sequentially, a first positive lens with a flat first surface and a second surface convex to the light incident side, a second positive lens with a third surface convex to the light exit side and a fourth surface convex to the light incident side, a third negative lens with a fourth surface concave to the light exit side and a fifth surface concave to the light incident side, and a fourth negative lens with a flat sixth surface and a seventh surface concave to the light incident side. The head-mounted optical system comprises an aperture, an eyepiece lens, and a micro display screen. According to the technical scheme, through reasonable configuration and selection of the eyepiece lens and the micro display screen, the invention provides the head-mounted optical system with a large field of view, micro display and high image quality, brings more comfortable viewing experience with higher quality, and satisfies the needs of users.
Description
Present patent application is to be on December 26th, 2014, Application No. 201410828223.7, entitled the applying date
A kind of divisional application of the Chinese invention patent application of " eyepiece camera lens and wear optical system ".
Technical field
The present invention relates to lens design field, more particularly, to a kind of eyepiece camera lens and wear optical system.
Background technology
Wearing optical system is an image enhancement system based on micro display screen, image produced by micro display screen by
Optical system amplify, before human eye at a certain distance from present one amplification the virtual image, so that user can be immersed in completely virtual
Among scene, do not disturbed by external information.In many applications, the user wearing optical system is mobile operation,
This requires optical system compact conformation, lightweight on the basis of ensureing image quality, and has larger visual field.Tradition
Solution mostly be rotational symmetric goggle structure although optical property can correct close to diffraction limit and preferably abnormal
Become, but its complex structure, debug and processing request high precision, volume weight is big, wears for a long time and can cause user cervical region
Fatigue.Additionally, traditional micro display screen is larger due to pixel dimension, granular phenomenon can be produced after eyepiece amplifies, use
Family experience is very poor.
Therefore, how to solve to wear the big visual field of optical system with high as the contradiction of matter, lightness, and eliminate micro- further
The granulating phenomenon of display screen, is currently to wear problem demanding prompt solution in optical system road for development.
Content of the invention
In view of the above problems, the invention provides a kind of eyepiece camera lens and wear optical system, solving the above problems or
Person solves the above problems at least in part.
According to one aspect of the present invention, there is provided a kind of eyepiece camera lens, this eyepiece camera lens includes four lens, against light
Line incident direction is followed successively by：
First plus lens, using plastic material, have the first surface for plane and the second surface being convex to light incidence side；
Second plus lens, using glass material, have the 3rd surface being convex to light outgoing side and be convex to light incidence side the
Four surfaces；
3rd minus lenses, using glass material, have the 4th surface concaving towards light outgoing side and concave towards light incidence side the
Five surfaces；
4th minus lenses, using plastic material, have the 6th surface for plane and the 7th surface concaving towards light incidence side；
Wherein, described 4th surface is described second plus lens and the cemented surface of described 3rd minus lenses, described second table
Face and described 7th surface are aspheric surface, and described 3rd surface, described 4th surface and described 5th surface are sphere.
According to another aspect of the present invention, there is provided one kind wears optical system, and this wears optical system against light
Incident direction includes successively：Diaphragm, above-mentioned eyepiece camera lens, and micro display screen.
In sum, compared with prior art, the technical scheme that the present invention provides has the advantages that：1st, just choose
The eyepiece camera lens of positive and negative negative structure, effectively eliminates aberration；2nd, combined using aspherical plastic lenses and spherical glass lens
Eyepiece camera lens, cost is relatively low, beneficial to production in enormous quantities；3rd, will be glued together with the 3rd minus lenses for the second plus lens, the two
Optical property mutually compensates for, and plays achromatic effect；4th, small volume, lightweight, mitigate burden for users.
Brief description
Fig. 1 shows a kind of schematic diagram wearing optical system according to an embodiment of the invention；
Fig. 2 show 30 lines wearing optical system according to an embodiment of the invention under MTF curve figure；
Fig. 3 shows the curvature of field wearing optical system according to an embodiment of the invention and distortion curve figure；
Fig. 4 shows the point range figure wearing optical system according to an embodiment of the invention；
Fig. 5 shows the ratio chromatism, figure wearing optical system according to an embodiment of the invention.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 shows a kind of schematic diagram wearing optical system according to an embodiment of the invention.As shown in figure 1, should
Wear optical system using moving back towards light path design, including：Diaphragm 110, eyepiece camera lens 120 and micro display screen 130.
Eyepiece camera lens 120 includes four lens, is followed successively by against light incident direction：
First plus lens 121, have the first surface S1 and the second surface S2 being convex to light incidence side for plane；Second just
Lens 122, have the 3rd surface S3 being convex to light outgoing side and the 4th surface S4 being convex to light incidence side；3rd minus lenses 123,
There is the 4th surface S4 concaving towards light outgoing side and the 5th surface S5 concaving towards light incidence side；4th minus lenses 124, it is flat for having
The 6th surface S6 in face and the 7th surface S7 concaving towards light incidence side.Wherein, the 4th surface S4 is the second plus lens 122 and the 3rd
The cemented surface of minus lenses 123, and second surface S2 and the 7th surface S7 is aspheric surface, the 3rd surface S3, the 4th surface S4 and the
Five surface S5 are sphere.
In the present embodiment, the first plus lens 121 adopt the plastic material of PMMA model, its refractive index and abbe number to divide
It is not：N1=1.491786, v1=57.327362；Second plus lens 122 adopt the glass material of H-BAK3 model, its refraction
Rate and abbe number are respectively：N2=1.546780, v2=62.741102；3rd minus lenses 123 adopt the glass of ZF14 model
Material, its refractive index and abbe number are respectively：N3=1.9176130, v3=21.510740；4th minus lenses 124 adopt PC
The plastic material of model, its refractive index and abbe number are respectively：N4=1.585470, v4=29.909185.Wherein, second
The reason plus lens 122 and the 3rd minus lenses 123 are using glass material be：1st, optical glass species is more, not same glass it
Between dispersion difference larger；2nd, optical glass can be processed into double cemented types and plastic material cannot.First plus lens 121 He
The reason 4th minus lenses 124 are using plastic material be：1st, plastic material price is relatively low；2nd, plastic material is easy to addition and becomes aspheric
Face type.
It can be seen that the first plus lens 121 make the axle dissipating, chief ray converges backward tracing ray trajectory outward, thereafter, the
Two plus lens 122 make the outer chief ray of axle bend further, now the first plus lens 121 and the second plus lens 122 create huge
Aberration, need to be corrected by the 3rd minus lenses 123.In the present embodiment, the second plus lens 122 adopt the crown board glass of low dispersion
Glass material, the 3rd minus lenses 123 adopt the flint glass material of high dispersion, by the second plus lens 122 and the 3rd minus lenses 123 glue
It is combined, the two optical property mutually compensates for, play achromatic effect.4th minus lenses adopt aspheric high dispersion
PC plastic material, is separated and near micro display screen 130, on the one hand can be further compensate for aberration, separately with the 3rd minus lenses 123
On the one hand the aberrations such as the curvature of field, astigmatism can effectively be corrected.
In the present embodiment, micro display screen 130 adopts 0.7 inch of 1080p OLED display screen, with traditional micro display
Screen is compared, and the pixel dimension of 1080p OLED display screen is much smaller, can effectively reduce generation after being amplified by eyepiece camera lens 120
The phenomenon of granulation, improves Consumer's Experience.
Based on each parameter mentioned above, the distance of diaphragm 110 to micro display screen 130 is less than 25mm, wears optical system real
Show 73 degree of the angle of visual field.When eyes are placed on diaphragm 110 position, micro display screen 130 by the user wearing optical system
The light sending forms the virtual image of an amplification after eyepiece camera lens 120 at first 5 meters of human eye.
Fig. 2 show 30 lines wearing optical system according to an embodiment of the invention under MTF curve figure, MTF
(optical transfer function) can be with the image quality of concentrated expression optical system, and its curve shape is more smooth, and X-axis height relatively is got over
Height is it was demonstrated that the image quality of system is better.As shown in Fig. 2 the various gray scale of in figure represents each field rays, the void of curve respectively
Represent the picture matter of the sagitta of arc and meridian direction respectively it can be seen that MTF curve more smooths compact, the mtf value that curve is characterized in fact
Very high, substantially more than 0.6, illustrate that the aberration wearing optical system has obtained good correction.
Fig. 3 shows the curvature of field wearing optical system according to an embodiment of the invention and distortion curve figure, wherein left
Side is curvature of field curve (FIELD CURVATURE), and right side is distortion curve (DISTORTION).
The curvature of field is a kind of aberration that object plane forms curved surface picture, needs to characterize with meridianal curvature of field and Sagittal field curvature, such as Fig. 3
Shown, in the curvature of field curve T line be meridianal curvature of field, S line be Sagittal field curvature, the difference between the two be optical system astigmatism, the curvature of field and
Astigmatism is the important aberration of the outer field rays of impact optical system axis, and the two crosses the off-axis ray that conference has a strong impact on optical system
Image quality is it can be seen that the curvature of field of optical system and astigmatism are all corrected in minimum scope.
Distortion does not affect the definition of optical system, but can cause the anamorphose of system, for wide-angle lens,
Correcting distorted is extremely difficult, can process to solve by later image.
Fig. 4 shows the point range figure wearing optical system according to an embodiment of the invention.Point range figure ignores diffraction effect
Should, reflection be optical system imaging geometry.In the point range figure of big aberration system, the distribution of point can approx represent
The Energy distribution of point picture.Therefore, in image quality evaluation, the dense degree of available point range figure more intuitively reflects to become with the system of measurement
As the quality of quality, the RMS radius of point range figure is less it was demonstrated that the image quality of system is better.As shown in figure 4, wearing optical system
The point range figure RMS radius of system is respectively less than 10um it is seen that the hot spot very little of each visual field, shows that system capacity distribution obtains excellent well
Change, aberration correction is relatively good.
Fig. 5 shows the ratio chromatism, figure wearing optical system according to an embodiment of the invention, ratio chromatism, be by
In different wave length, in identical material, refractive index is different and the difference of optical system magnification that leads to.As shown in figure 5, transverse axis
Represent the difference in height in image planes, the longitudinal axis represents the angle of visual field, on the basis of the height of the green glow hot spot in image planes, that is, under different visual fields
The altitude curve of green glow hot spot is overlapped with the longitudinal axis, and the curve on the left of the longitudinal axis represents blue light hot spot and green glow hot spot under different visual fields
Difference in height, the curve on the right side of the longitudinal axis represents difference in height, blue light curve and the HONGGUANG of HONGGUANG hot spot and green glow hot spot under different visual fields
The difference of curve be optical system ratio chromatism, it can be seen that under each visual field ratio chromatism, be respectively less than 5um, illustrate that aberration obtains
To good correction.
In sum, the technical scheme that the present invention provides is by the reasonable disposition of eyepiece camera lens and micro display screen and choosing
Type is it is achieved that big visual field, micro display, height, as the optical system of wearing of matter, compared with prior art, have the advantages that：
1st, choose the eyepiece camera lens of positive and negative negative structure, and by the reasonable selection to lens material, effectively eliminate aberration, improve into
As quality；2nd, choose 1080p OLED display screen, be inherently eliminated big visual field micro display and worn optical system in viewing
The granulating phenomenon occurring；3rd, axial dimension is short, small volume, lightweight, mitigates burden for users；4th, aspherical plastic lenses are adopted
The eyepiece camera lens combining with spherical glass lens, cost is relatively low, beneficial to production in enormous quantities；5th, will be negative with the 3rd for the second plus lens
Lens are glued together, and the two optical property mutually compensates for, and play achromatic effect.Based on above feature, the present invention provides
Optical system of wearing bring higher, the more comfortable viewing experience of quality to user, meet user's request.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.All
Any modification, equivalent substitution and improvement made within the spirit and principles in the present invention etc., are all contained in protection scope of the present invention
Interior.
Claims (7)
1. a kind of eyepiece camera lens, it is characterised in that this eyepiece camera lens includes four lens, is followed successively by against light incident direction：
First plus lens, using plastic material, have the first surface for plane and the second surface being convex to light incidence side；
Second plus lens, using glass material, have the 3rd surface being convex to light outgoing side and the 4th table being convex to light incidence side
Face；
3rd minus lenses, using glass material, have described 4th surface concaving towards light outgoing side and concave towards light incidence side the
Five surfaces；
4th minus lenses, using plastic material, have the 6th surface for plane and the 7th surface concaving towards light incidence side；
Wherein, described 4th surface is described second plus lens and the cemented surface of described 3rd minus lenses, described second surface and
Described 7th surface is aspheric surface, and described 3rd surface, described 4th surface and described 5th surface are sphere.
2. eyepiece camera lens as claimed in claim 1 it is characterised in that
The refractive index of described first plus lens and abbe number scope are respectively：1.45 ＜ n1 ＜ 1.60,50 ＜ v1 ＜ 75；
The refractive index of described second plus lens and abbe number scope are respectively：1.45 ＜ n2 ＜ 1.75,50 ＜ v2 ＜ 70；
The refractive index of described 3rd minus lenses and abbe number scope are respectively：1.65 ＜ n3 ＜ 1.95,20 ＜ v3 ＜ 30；
The refractive index of described 4th minus lenses and abbe number scope are respectively：1.45 ＜ n4 ＜ 1.75,20 ＜ v4 ＜ 40.
3. eyepiece camera lens as claimed in claim 2 it is characterised in that
The refractive index of described first plus lens and abbe number are respectively：N1=1.491786, v1=57.327362；
The refractive index of described second plus lens and abbe number are respectively：N2=1.546780, v2=62.741102；
The refractive index of described 3rd minus lenses and abbe number are respectively：N3=1.9176130, v3=21.510740；
The refractive index of described 4th minus lenses and abbe number are respectively：N4=1.585470, v4=29.909185.
4. eyepiece camera lens as claimed in claim 3 it is characterised in that
Described first plus lens adopt the plastic material of PMMA model；
Described second plus lens adopt the glass material of H-BAK3 model；
Described 3rd minus lenses adopt the glass material of ZF14 model；
Described 4th minus lenses adopt the plastic material of PC model.
5. one kind wears optical system it is characterised in that this wears optical system includes successively against light incident direction：Light
Door screen, the eyepiece camera lens as any one of claim 1-4, and micro display screen.
6. wear optical system as claimed in claim 5 it is characterised in that described micro display screen is 0.7 inch of 1080p
OLED display screen.
7. wear optical system as claimed in claim 5 it is characterised in that the distance of described diaphragm extremely described micro display screen is
L, L are less than 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610834704.8A CN106405819B (en) | 2014-12-26 | 2014-12-26 | A kind of eyepiece camera lens and wear optical system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410828223.7A CN104570323B (en) | 2014-12-26 | 2014-12-26 | Eyepiece lens assembly and head-mounted optical system |
| CN201610834704.8A CN106405819B (en) | 2014-12-26 | 2014-12-26 | A kind of eyepiece camera lens and wear optical system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410828223.7A Division CN104570323B (en) | 2014-12-26 | 2014-12-26 | Eyepiece lens assembly and head-mounted optical system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106405819A true CN106405819A (en) | 2017-02-15 |
| CN106405819B CN106405819B (en) | 2019-04-30 |
Family
ID=53086804
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410828223.7A Active CN104570323B (en) | 2014-12-26 | 2014-12-26 | Eyepiece lens assembly and head-mounted optical system |
| CN201610834704.8A Active CN106405819B (en) | 2014-12-26 | 2014-12-26 | A kind of eyepiece camera lens and wear optical system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410828223.7A Active CN104570323B (en) | 2014-12-26 | 2014-12-26 | Eyepiece lens assembly and head-mounted optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104570323B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111694147A (en) * | 2020-06-24 | 2020-09-22 | 深圳珑璟光电技术有限公司 | Eyepiece lens and eyepiece optical system |
| CN113050244A (en) * | 2021-03-22 | 2021-06-29 | 业成科技（成都）有限公司 | Lens assembly and display device |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570323B (en) * | 2014-12-26 | 2017-02-08 | 歌尔科技有限公司 | Eyepiece lens assembly and head-mounted optical system |
| US10215978B2 (en) | 2015-11-13 | 2019-02-26 | Shenzhen Ned Optics Co., Ltd. | Eyepiece optical system with large field-of-view angle and head-mounted display apparatus |
| CN105527712B (en) * | 2016-01-26 | 2018-07-03 | 深圳市谛源光科有限公司 | A kind of novel optical system for virtual reality device |
| CN105527713B (en) * | 2016-01-26 | 2018-05-01 | 深圳市谛源光科有限公司 | A kind of optical system for virtual reality device |
| CN105589208B (en) * | 2016-02-29 | 2018-06-01 | 中山联合光电科技股份有限公司 | Focusing virtual reality optical system in a kind of |
| US10571692B2 (en) * | 2016-03-02 | 2020-02-25 | Facebook Technologies, Llc | Field curvature corrected display |
| CN109358425A (en) * | 2018-11-02 | 2019-02-19 | 杭州有人光电技术有限公司 | A kind of full HD eyepiece optical system of virtual reality device |
| CN109491049B (en) * | 2018-12-26 | 2023-08-29 | 歌尔光学科技有限公司 | Projection optical system and augmented reality glasses with same |
| CN114236864A (en) * | 2021-11-23 | 2022-03-25 | 青岛歌尔声学科技有限公司 | Optical module and head-mounted display equipment |
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| CN111694147A (en) * | 2020-06-24 | 2020-09-22 | 深圳珑璟光电技术有限公司 | Eyepiece lens and eyepiece optical system |
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| CN113050244A (en) * | 2021-03-22 | 2021-06-29 | 业成科技（成都）有限公司 | Lens assembly and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104570323B (en) | 2017-02-08 |
| CN106405819B (en) | 2019-04-30 |
| CN104570323A (en) | 2015-04-29 |
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