CN106405819B - A kind of eyepiece camera lens and wear optical system - Google Patents
A kind of eyepiece camera lens and wear optical system Download PDFInfo
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- CN106405819B CN106405819B CN201610834704.8A CN201610834704A CN106405819B CN 106405819 B CN106405819 B CN 106405819B CN 201610834704 A CN201610834704 A CN 201610834704A CN 106405819 B CN106405819 B CN 106405819B
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Classifications
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- 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 a kind of eyepiece camera lens and optical system is worn, which includes four lens, successively against light incident direction are as follows: the first positive lens has the first surface for plane and is convex to the second surface of light incidence side；Second positive lens has and is convex to the third surface of light outgoing side and is convex to the 4th surface of light incidence side；Third negative lens has and concaves towards the 4th surface of light outgoing side and concave towards the 5th surface of light incidence side；4th negative lens has the 6th surface for plane and concaves towards the 7th surface of light incidence side.It includes: diaphragm, eyepiece camera lens and micro display screen that this, which wears optical system,.Technical solution provided by the invention realizes big visual field, micro display, high image quality and wears optical system by the reasonable disposition and type selecting to eyepiece camera lens and micro display screen, brings that quality is higher, more comfortable viewing experience to user, meets user demand.
Description
Present patent application be the applying date be on December 26th, 2014, application No. is 201410828223.7, it is entitled
The divisional application of the Chinese invention patent application of " a kind 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 technique
Wearing optical system is the image enhancement system based on micro display screen, image caused by micro display screen by
Optical system amplification, is presented the virtual image of an amplification, is immersed in user completely virtual at a certain distance from before human eye
Among scene, not by the interference of external information.In many application fields, the user for wearing optical system is mobile operation,
It is compact-sized on the basis of ensuring the imaging quality, light-weight that this requires optical systems, and possesses biggish visual field.Tradition
Solution be mostly rotational symmetry goggle structure, although optical property can be close to diffraction limit and preferably correct abnormal
Become, but its structure is complicated, adjustment and processing accuracy are high, and volume weight is big, and user's neck can be caused for a long time by wearing
Fatigue.In addition, the phenomenon that traditional micro display screen since pixel dimension is larger, can generate granulating after eyepiece amplifies, uses
Family experience is very poor.
Therefore, how to solve to wear the big visual field and high image quality, the contradiction of lightness of optical system, and further eliminate micro-
The granulating phenomenon of display screen is currently to wear urgent problem to be solved in optical system development path.
Summary of the invention
In view of the above problems, the present invention provides a kind of eyepiece camera lens and wearing optical system, to solve the above problems or
Person at least is partially solved the above problem.
According to one aspect of the present invention, a kind of eyepiece camera lens is provided, which includes four lens, against light
Line incident direction is successively are as follows:
First positive lens is had the first surface for plane and is convex to the second surface of light incidence side using plastic material；
Second positive lens is had the third surface for being convex to light outgoing side and is convex to the of light incidence side using glass material
Four surfaces；
Third negative lens is had the 4th surface for concaving towards light outgoing side and is concaved towards the of light incidence side using glass material
Five surfaces；
4th negative lens is had the 6th surface for plane and is concaved towards the 7th surface of light incidence side using plastic material；
Wherein, the 4th surface is the cemented surface of second positive lens and the third negative lens, second table
Face and the 7th surface be it is aspherical, the third surface, the 4th surface and the 5th surface are spherical surface.
According to another aspect of the invention, it provides one kind and wears optical system, this wears optical system against light
Incident direction successively includes: diaphragm, above-mentioned eyepiece camera lens and micro display screen.
In conclusion compared with prior art, technical solution provided by the invention has the advantages that 1, chooses just
The eyepiece camera lens of positive and negative negative structure, effectively eliminates color difference；2, it is combined using aspherical plastic lens and spherical glass lens
Eyepiece camera lens, cost is relatively low, be conducive to produce in enormous quantities；3, the second positive lens and third negative lens is glued together, the two
Optical property mutually compensates, and plays the role of achromatic；4, small in size, it is light-weight, mitigate burden for users.
Detailed description of the invention
Fig. 1 shows a kind of schematic diagram for wearing optical system according to an embodiment of the invention；
Fig. 2 shows MTF curve figure of 30 lines according to an embodiment of the invention for wearing optical system under；
Fig. 3 shows the curvature of field and distortion curve according to an embodiment of the invention for wearing optical system；
Fig. 4 shows the point range figure according to an embodiment of the invention for wearing optical system；
Fig. 5 shows the magnification chromatic aberration diagram according to an embodiment of the invention for wearing optical system.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 shows a kind of schematic diagram for wearing optical system according to an embodiment of the invention.As shown in Figure 1, should
It wears optical system use and moves back towards light path design, comprising: diaphragm 110, eyepiece camera lens 120 and micro display screen 130.
Eyepiece camera lens 120 includes four lens, successively against light incident direction are as follows:
First positive lens 121 has the first surface S1 for plane and is convex to the second surface S2 of light incidence side；Second just
Lens 122 have the third surface S3 for being convex to light outgoing side and the 4th surface S4 for being convex to light incidence side；Third negative lens 123,
The 4th surface S4 of light outgoing side and the 5th surface S5 of light incidence side is concaved towards with concaving towards；4th negative lens 124, it is flat for having
The 6th surface S6 in face and the 7th surface S7 for concaving towards light incidence side.Wherein, the 4th surface S4 is the second positive lens 122 and third
The cemented surface of negative lens 123, and second surface S2 and the 7th surface S7 is aspherical, third surface S3, the 4th surface S4 and the
Five surface S5 are spherical surface.
In the present embodiment, using the plastic material of PMMA model, refractive index and abbe number divide the first positive lens 121
Not are as follows: n1=1.491786, v1=57.327362；Glass material of second positive lens 122 using H-BAK3 model, refraction
Rate and abbe number are respectively as follows: n2=1.546780, v2=62.741102；Third negative lens 123 uses the glass of ZF14 model
Material, refractive index and abbe number are respectively as follows: n3=1.9176130, v3=21.510740；4th negative lens 124 uses PC
The plastic material of model, refractive index and abbe number are respectively as follows: n4=1.585470, v4=29.909185.Wherein, second
Positive lens 122 and third negative lens 123 are using the reason of glass material: 1, optical glass type is more, not same glass it
Between dispersion difference it is larger；2, optical glass can process cemented type in pairs and plastic material cannot.First positive lens, 121 He
4th negative lens 124 is using the reason of plastic material: 1, plastic material price is lower；2, plastic material is easy to addition into aspheric
Face type.
Backtracking light trajectory, it can be seen that the first positive lens 121 makes the main axis outside the axis convergence of diverging, thereafter, the
Two positive lens 122 are bent main axis outside the axis further, and the first positive lens 121 and the second positive lens 122 produce huge at this time
Color difference, need to be corrected by third negative lens 123.In the present embodiment, the second positive lens 122 uses the crown board glass of low dispersion
Glass material, third negative lens 123 use the flint glass material of high dispersion, by the second positive lens 122 and 123 glue of third negative lens
It is combined, the two optical property mutually compensates, and plays the role of achromatic.4th negative lens is using aspherical high dispersion
PC plastic material, separates with 123 phase of third negative lens and close to micro display screen 130, on the one hand can be further compensate for color difference, separately
On the one hand the aberrations such as field music, astigmatism can effectively be corrected.
In the present embodiment, micro display screen 130 uses 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 that granulation, improves user experience.
Base on that parameters describe above, the distance of diaphragm 110 to micro display screen 130 is less than 25mm, wears optical system reality
73 degree of field angle is showed.When eyes are placed on 110 position of diaphragm, micro display screen 130 by the user for wearing optical system
The light of sending forms the virtual image of an amplification after eyepiece camera lens 120 before human eye at 5 meters.
Fig. 2 shows MTF curve figure of 30 lines according to an embodiment of the invention for wearing optical system under, MTF
(optical transfer function) can be with the image quality of concentrated expression optical system, and curve shape is more smooth, and opposite X-axis height is got over
It is high, it was demonstrated that the image quality of system is better.As shown in Fig. 2, various gray scales respectively represent each field rays, the void of curve in figure
The image quality of the sagitta of arc and meridian direction is respectively represented in fact, it can be seen that more smooth compact, the mtf value that curve is characterized of MTF curve
It is very high, substantially 0.6 or more, illustrate that the aberration for wearing optical system has obtained good correction.
Fig. 3 shows the curvature of field and distortion curve according to an embodiment of the invention for wearing optical system, wherein left
Side is 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, T line is meridianal curvature of field in field curve, and S line is Sagittal field curvature, and the difference between the two is the astigmatism of optical system, the curvature of field and
Astigmatism is the important aberration for influencing the outer field rays of optical system axis, and the two crosses the off-axis ray that conference seriously affects optical system
Image quality, it can be seen that the curvature of field and astigmatism of optical system are corrected in minimum range.
Distortion does not influence the clarity of optical system, but can cause the anamorphose of system, for wide-angle lens,
It is correcting distorted be it is extremely difficult, can be solved by later image processing.
Fig. 4 shows the point range figure according to an embodiment of the invention for wearing optical system.Point range figure ignores diffraction effect
Answer, reflection be optical system imaging geometry.In the dot matrix diagram of a large aberration system, the distribution of point can be represented approximatively
The Energy distribution of point picture.Therefore, in image quality evaluation, can more intuitively be reflected and be measured with the concentration of point range figure system at
The RMS radius of the superiority and inferiority of image quality amount, point range figure is smaller, it was demonstrated that the image quality of system is better.As shown in figure 4, wearing optical system
The point column RMS radius of system is respectively less than 10um, it is seen that it is excellent well to show that system capacity is distributed to obtain for the hot spot very little of each visual field
Change, aberration correction is relatively good.
Fig. 5 shows the magnification chromatic aberration diagram according to an embodiment of the invention for wearing optical system, ratio chromatism, be by
The difference of optical system magnification caused by refractive index is different in the same material in different wave length.As shown in figure 5, horizontal axis
Indicate the difference in height in image planes, the longitudinal axis represents field angle, on the basis of the height of the green light hot spot in image planes, i.e., under different visual fields
The altitude curve of green light 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 light hot spot under different visual fields
Difference in height, the curve on the right side of the longitudinal axis represent the difference in height of feux rouges hot spot and green light hot spot under different visual fields, blue light curve and feux rouges
The difference of curve is the ratio chromatism, of optical system, it can be seen that ratio chromatism, is respectively less than 5um under each visual field, illustrates that color difference obtains
To good correction.
In conclusion technical solution provided by the invention passes through the reasonable disposition and choosing to eyepiece camera lens and micro display screen
Type realizes big visual field, micro display, high image quality and wears optical system, compared with prior art, has the advantages that
1, choose the eyepiece camera lens of positive and negative negative structure, and by the reasonable selection to lens material, effectively eliminate color difference, improve at
Image quality amount；2,1080p OLED display screen is chosen, big visual field micro display has been inherently eliminated and has worn optical system in viewing
The granulating phenomenon of appearance；3, axial dimension is short, small in size, light-weight, mitigates burden for users；4, using aspherical plastic lens
The eyepiece camera lens combined with spherical glass lens, cost is relatively low, is conducive to produce in enormous quantities；5, the second positive lens and third are born
Lens are glued together, and the two optical property mutually compensates, and play the role of achromatic.Based on the above feature, the present invention is provided
Optical system of wearing bring that quality is higher, more comfortable viewing experience to user, meet user demand.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (6)
1. a kind of eyepiece camera lens, which is characterized in that the eyepiece camera lens includes four lens, successively against light incident direction are as follows:
First positive lens is had the first surface for plane and is convex to the second surface of light incidence side using plastic material；
Second positive lens is had using glass material and is convex to the third surface of light outgoing side and is convex to the 4th table of light incidence side
Face；
Third negative lens is had the 4th surface for concaving towards light outgoing side and is concaved towards the of light incidence side using glass material
Five surfaces；
4th negative lens is had the 6th surface for plane and is concaved towards the 7th surface of light incidence side using plastic material；
Wherein, the 4th surface be second positive lens and the third negative lens cemented surface, the second surface and
7th surface be it is aspherical, the third surface, the 4th surface and the 5th surface be spherical surface.
2. eyepiece camera lens as described in claim 1, which is characterized in that
The refractive index and abbe number range of first positive lens are respectively as follows: 1.45 < n1 <, 1.60,50 < v1 < 75；
The refractive index and abbe number range of second positive lens are respectively as follows: 1.45 < n2 <, 1.75,50 < v2 < 70；
The refractive index and abbe number range of the third negative lens are respectively as follows: 1.65 < n3 <, 1.95,20 < v3 < 30；
The refractive index and abbe number range of 4th negative lens are respectively as follows: 1.45 < n4 <, 1.75,20 < v4 < 40.
3. eyepiece camera lens as claimed in claim 2, which is characterized in that
The refractive index and abbe number of first positive lens are respectively as follows: n1=1.491786, v1=57.327362；
The refractive index and abbe number of second positive lens are respectively as follows: n2=1.546780, v2=62.741102；
The refractive index and abbe number of the third negative lens are respectively as follows: n3=1.9176130, v3=21.510740；
The refractive index and abbe number of 4th negative lens are respectively as follows: n4=1.585470, v4=29.909185.
4. one kind wears optical system, which is characterized in that it successively includes: light that this, which wears optical system against light incident direction,
Door screen, eyepiece camera lens and micro display screen as claimed in any one of claims 1-3.
5. wearing optical system as claimed in claim 4, which is characterized in that the micro display screen is 0.7 inch of 1080p
OLED display screen.
6. wearing optical system as claimed in claim 4, which is characterized in that the distance of the diaphragm to the 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 CN106405819A (en) | 2017-02-15 |
| CN106405819B true CN106405819B (en) | 2019-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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 |
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| CN201410828223.7A Active CN104570323B (en) | 2014-12-26 | 2014-12-26 | Eyepiece lens assembly and head-mounted optical system |
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| CN (2) | CN104570323B (en) |
Families Citing this family (11)
| 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 |
| CN111694147B (en) * | 2020-06-24 | 2023-12-08 | 深圳珑璟光电科技有限公司 | Eyepiece lens and eyepiece optical system |
| CN113050244B (en) * | 2021-03-22 | 2023-03-17 | 业成科技（成都）有限公司 | Lens assembly and display device |
| 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 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204422862U (en) * | 2014-12-26 | 2015-06-24 | 青岛歌尔声学科技有限公司 | A kind of eyepiece camera lens and wear optical system |
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| JPH07281256A (en) * | 1994-04-05 | 1995-10-27 | Canon Inc | Finder device |
| JP2000098265A (en) * | 1998-09-21 | 2000-04-07 | Olympus Optical Co Ltd | Ocular |
| US7131740B2 (en) * | 2004-03-17 | 2006-11-07 | Olympus Corporation | Optical system and optical apparatus provided with the same |
| US7804651B2 (en) * | 2008-11-25 | 2010-09-28 | Itt Manufacturing Enterprises, Inc. | Flat field eyepiece |
| CN102096194B (en) * | 2010-12-24 | 2016-04-13 | 北京理工大学 | A kind of optical transmission projection type three-dimensional helmet display |
| CN104570323B (en) * | 2014-12-26 | 2017-02-08 | 歌尔科技有限公司 | Eyepiece lens assembly and head-mounted optical system |
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|---|---|---|---|---|
| CN204422862U (en) * | 2014-12-26 | 2015-06-24 | 青岛歌尔声学科技有限公司 | A kind of eyepiece camera lens and wear optical system |
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| Publication number | Publication date |
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| CN106405819A (en) | 2017-02-15 |
| CN104570323B (en) | 2017-02-08 |
| CN104570323A (en) | 2015-04-29 |
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