CN204422862U - A kind of eyepiece camera lens and wear optical system - Google Patents
A kind of eyepiece camera lens and wear optical system Download PDFInfo
- Publication number
- CN204422862U CN204422862U CN201420850011.4U CN201420850011U CN204422862U CN 204422862 U CN204422862 U CN 204422862U CN 201420850011 U CN201420850011 U CN 201420850011U CN 204422862 U CN204422862 U CN 204422862U
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- lens
- optical system
- camera lens
- eyepiece camera
- refractive index
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Abstract
The utility model discloses a kind of eyepiece camera lens and wear optical system, this eyepiece camera lens comprises four lens, is followed successively by against light direction: the first positive lens, has the first surface for plane and the convex second surface to light incidence side; Second positive lens, has convex the 3rd surface to light outgoing side and convex the 4th surface to light incidence side; 3rd negative lens, has recessed the 4th surface to light outgoing side and recessed the 5th surface to light incidence side; 4th negative lens, has the 6th surface for plane and recessed the 7th surface to light incidence side.This is worn optical system and comprises: diaphragm, eyepiece camera lens and micro-display screen.The technical scheme that the utility model provides by the reasonable disposition of eyepiece camera lens and micro-display screen and type selecting, achieve Large visual angle, micro-display, high picture element wear optical system, to the viewing experience that user brings quality higher, more comfortable, meet user's request.
Description
Technical field
The utility model relates to lens design field, particularly relates to a kind of eyepiece camera lens and wears optical system.
Background technology
Wearing optical system is an image enhancement system based on micro-display screen, the image that micro-display screen produces amplifies by optical system, present a virtual image of amplifying in the front a distance of human eye, user can be immersed among virtual sight completely, not by the interference of external information.In many applications, the user wearing optical system is mobile operating, and this just requires optical system compact conformation, lightweight on the basis ensureing image quality, and has larger visual field.Traditional solution mostly is rotational symmetric goggle structure, although optical property can be also correcting distorted preferably close to diffraction limit, its complex structure, debugs with processing request precision high, volume weight is large, wears for a long time and can cause user's neck fatigue.In addition, traditional micro-display screen due to pixel dimension comparatively large, can produce granular phenomenon after eyepiece amplifies, Consumer's Experience is very poor.
Therefore, how solving the contradiction of the Large visual angle of wearing optical system and high picture element, lightness, and eliminate the granulating phenomenon of micro-display screen further, is currently wear problem demanding prompt solution in optical system road for development.
Utility model content
In view of the above problems, the utility model provides a kind of optical system, to solve the problem or to solve the problem at least in part.
According to an aspect of the present utility model, provide a kind of eyepiece camera lens, this eyepiece camera lens comprises four lens, is followed successively by against light direction:
First positive lens, has the first surface for plane and the convex second surface to light incidence side;
Second positive lens, has convex the 3rd surface to light outgoing side and convex the 4th surface to light incidence side;
3rd negative lens, has recessed the 4th surface to light outgoing side and recessed the 5th surface to light incidence side;
4th negative lens, has the 6th surface for plane and recessed the 7th surface to light incidence side.
Alternatively, described 4th surface is the cemented surface of described second positive lens and described 3rd negative lens.
Alternatively, described second surface and described 7th surface are aspheric surface, and described 3rd surface, described 4th surface and described 5th surface are sphere.
Alternatively, the refractive index of described first positive lens and abbe number scope are respectively: 1.45 < n1 < 1.60,50 < v1 < 75;
Refractive index and the abbe number scope of described second positive lens are respectively: 1.45 < n2 < 1.75,50 < v2 < 70;
Refractive index and the abbe number scope of described 3rd negative lens are respectively: 1.65 < n3 < 1.95,20 < v3 < 30;
Refractive index and the abbe number scope of described 4th negative lens are respectively: 1.45 < n4 < 1.75,20 < v4 < 40.
Alternatively, the refractive index of described first positive lens and abbe number are respectively: n1=1.491786, v1=57.327362;
Refractive index and the abbe number of described second positive lens are respectively: n2=1.546780, v2=62.741102;
Refractive index and the abbe number of described 3rd negative lens are respectively: n3=1.9176130, v3=21.510740;
Refractive index and the abbe number of described 4th negative lens are respectively: n4=1.585470, v4=29.909185.
Alternatively, described first positive lens adopts the plastic material of PMMA model;
Described second positive lens adopts the glass material of H-BAK3 model;
Described 3rd negative lens adopts the glass material of ZF14 model;
Described 4th negative lens adopts the plastic material of PC model.
According to another aspect of the present utility model, provide one and wear optical system, this is worn optical system and comprises successively against light direction: diaphragm, the eyepiece camera lens according to any one of claim 1-6, and micro-display screen.
Alternatively, described micro-display screen is 0.7 inch of 1080p M-OLED display screen.
Alternatively, described diaphragm is that L, L are less than 25mm to the distance of described micro-display screen.
In sum, compared with prior art, the technical scheme that the utility model provides has following beneficial effect: the eyepiece camera lens 1, choosing positive and negative negative structure, effectively eliminates aberration; 2, the eyepiece camera lens adopting aspherical plastic lens and spherical glass lens to combine, cost is lower, is beneficial to production in enormous quantities; 3, choosing 1080p M-OLED display screen, fundamentally eliminating the granulating phenomenon that optical system appearance when watching is worn in the micro-display of Large visual angle; 4, volume is little, lightweight, alleviates burden for users.
Accompanying drawing explanation
Fig. 1 shows a kind of schematic diagram wearing optical system according to the utility model embodiment;
Fig. 2 show according to 30 lines wearing optical system of the utility model embodiment under MTF curve map;
Fig. 3 shows the curvature of field wearing optical system according to the utility model embodiment and distortion curve figure;
Fig. 4 shows the point range figure wearing optical system according to the utility model embodiment;
Fig. 5 shows the ratio chromatism, figure wearing optical system according to the utility model embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Fig. 1 shows a kind of schematic diagram wearing optical system according to the utility model embodiment.As shown in Figure 1, this is worn optical system employing and moves back towards light path design, comprising: diaphragm 110, eyepiece camera lens 120 and micro-display screen 130.
Eyepiece camera lens 120 comprises four lens, is followed successively by against light direction:
First positive lens 121, has the first surface S1 for plane and the convex second surface S2 to light incidence side; Second positive lens 122, has convex the 3rd surperficial S3 to light outgoing side and convex the 4th surperficial S4 to light incidence side; 3rd negative lens 123, has recessed the 4th surperficial S4 to light outgoing side and recessed the 5th surperficial S5 to light incidence side; 4th negative lens 124, has the 6th surperficial S6 for plane and recessed the 7th surperficial S7 to light incidence side.Wherein, the 4th surperficial S4 is the cemented surface of the second positive lens 122 and the 3rd negative lens 123, and second surface S2 and the 7th surperficial S7 is aspheric surface, and the 3rd surperficial S3, the 4th surperficial S4 and the 5th surperficial S5 are sphere.
In the present embodiment, the first positive lens 121 adopts the plastic material of PMMA model, and its refractive index and abbe number are respectively: n1=1.491786, v1=57.327362; Second positive lens 122 adopts the glass material of H-BAK3 model, and its refractive index and abbe number are respectively: n2=1.546780, v2=62.741102; 3rd negative lens 123 adopts the glass material of ZF14 model, and its refractive index and abbe number are respectively: n3=1.9176130, v3=21.510740; 4th negative lens 124 adopts the plastic material of PC model, and its refractive index and abbe number are respectively: n4=1.585470, v4=29.909185.Wherein, the second positive lens 122 and the 3rd negative lens 123 adopt the reason of glass material to be: 1, optical glass kind is more, and the dispersion difference not between same glass is larger; 2, optical glass can be processed into two cemented type and plastic material cannot.First positive lens 121 and the 4th negative lens 124 adopt the reason of plastic material to be: 1, plastic material price is lower; 2, plastic material is easy to addition and becomes aspherical types.
Backward tracing ray trajectory, can see, the first positive lens 121 makes the outer chief ray of axle dispersed converge, thereafter, second positive lens 122 makes the outer chief ray of axle bend further, and now the first positive lens 121 and the second positive lens 122 create huge aberration, need to be corrected by the 3rd negative lens 123.In the present embodiment, second positive lens 122 adopts the crown glass material of low dispersion, and the 3rd negative lens 123 adopts the flint glass material of high dispersion, by the second positive lens 122 and the 3rd negative lens 123 glued together, the two optical property compensates mutually, plays achromatic effect.4th negative lens adopts the PC plastic material of aspheric high dispersion, is separated and near micro-display screen 130 with the 3rd negative lens 123, on the one hand can compensate for chromatic aberration further, and another aspect can correct the aberration such as the curvature of field, astigmatism effectively.
In the present embodiment; micro-display screen 130 adopts the 1080p M-OLED display screen of 0.7 inch, and compared with traditional micro-display screen, the pixel dimension of 1080p M-OLED display screen is much smaller; can effectively reduce and be amplified the granular phenomenon of rear generation by eyepiece camera lens 120, improve Consumer's Experience.
Based on each parameter mentioned above, diaphragm 110 is less than 25mm to the distance of micro-display screen 130, wears the field angle that optical system achieves 73 degree.When eyes are placed on diaphragm 110 position by the user wearing optical system, the light that micro-display screen 130 sends after eyepiece camera lens 120 in the virtual image that the front 5 meters of formation one of human eye are amplified.
Fig. 2 show according to 30 lines wearing optical system of the utility model embodiment under MTF curve map, MTF (optical transfer function) can the image quality of concentrated expression optical system, its curve shape is more level and smooth, and X-axis height is higher relatively, the image quality of proof system is better.As shown in Figure 2, in figure, various gray scale represents each field rays respectively, the actual situation of curve represents the picture element of the sagitta of arc and meridian direction respectively, can see, MTF curve is comparatively smoothly compact, the mtf value that Curves characterizes is very high, substantially more than 0.6, illustrates that the aberration wearing optical system obtains good correction.
Fig. 3 shows the curvature of field wearing optical system according to the utility model embodiment and distortion curve figure, and 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, need to characterize with meridianal curvature of field and Sagittal field curvature, as shown in Figure 3, in curvature of field curve, T line is meridianal curvature of field, and S line is Sagittal field curvature, and the difference of the two is the astigmatism of optical system, the curvature of field and astigmatism are the important aberrations affecting the outer field rays of optical system axis, the two crosses the off-axis ray image quality that conference has a strong impact on optical system, and can see, the curvature of field of optical system and astigmatism are all corrected in minimum scope.
Distortion does not affect the sharpness of optical system, but can cause the anamorphose of system, and for wide-angle lens, correcting distorted is very difficult, can be solved by later image process.
Fig. 4 shows the point range figure wearing optical system according to the utility model embodiment.Point range figure ignores diffraction effect, reflection be the geometry of optical system imaging.In the point range figure of large aberration system, the distribution of point can the energy distribution of representative point picture approx.Therefore, in image quality evaluation, the dense degree of available point range figure more intuitively reflects and weighs the quality of system imaging quality, and the RMS radius of point range figure is less, and the image quality of proof system is better.As shown in Figure 4, the point range figure RMS radius wearing optical system is all less than 10um, and the hot spot of visible each visual field is very little, and show that system capacity distribution is well optimized, aberration correction is relatively good.
Fig. 5 shows the ratio chromatism, figure wearing optical system according to the utility model embodiment, and ratio chromatism, is the difference of the optical system magnification caused because different wave length refractive index in same material is different.As shown in Figure 5, transverse axis represents the difference in height in image planes, the longitudinal axis represents field angle, with the height of the green glow hot spot in image planes for benchmark, namely under different visual field, the altitude curve of green glow hot spot overlaps with the longitudinal axis, curve on the left of the longitudinal axis represents the difference in height of blue light hot spot and green glow hot spot under different visual field, curve on the right side of the longitudinal axis represents the difference in height of ruddiness hot spot and green glow hot spot under different visual field, the difference of blue light curve and ruddiness curve is the ratio chromatism, of optical system, can see, under each visual field, ratio chromatism, is all less than 5um, illustrates that aberration obtains good correction.
In sum, the technical scheme that the utility model provides is by the reasonable disposition of eyepiece camera lens and micro-display screen and type selecting, achieve Large visual angle, micro-display, high picture element wear optical system, compared with prior art, there is following beneficial effect: the eyepiece camera lens 1, choosing positive and negative negative structure, and by the choose reasonable to lens material, effectively eliminate aberration, improve image quality; 2, choosing 1080p M-OLED display screen, fundamentally eliminating the granulating phenomenon that optical system appearance when watching is worn in the micro-display of Large visual angle; 3, axial dimension is short, and volume is little, lightweight, alleviates burden for users; 4, the eyepiece camera lens adopting aspherical plastic lens and spherical glass lens to combine, cost is lower, is beneficial to production in enormous quantities.Based on above feature, the viewing experience that optical system that what the utility model provided wear brings quality higher, more comfortable to user, meets user's request.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit protection domain of the present utility model.All do within spirit of the present utility model and principle any amendment, equivalent replacement, improvement etc., be all included in protection domain of the present utility model.
Claims (9)
1. an eyepiece camera lens, is characterized in that, this eyepiece camera lens comprises four lens, is followed successively by against light direction:
First positive lens, has the first surface for plane and the convex second surface to light incidence side;
Second positive lens, has convex the 3rd surface to light outgoing side and convex the 4th surface to light incidence side;
3rd negative lens, has recessed described 4th surface to light outgoing side and recessed the 5th surface to light incidence side;
4th negative lens, has the 6th surface for plane and recessed the 7th surface to light incidence side.
2. eyepiece camera lens as claimed in claim 1, it is characterized in that, described 4th surface is the cemented surface of described second positive lens and described 3rd negative lens.
3. eyepiece camera lens as claimed in claim 2, it is characterized in that, described second surface and described 7th surface are aspheric surface, and described 3rd surface, described 4th surface and described 5th surface are sphere.
4. eyepiece camera lens as claimed in claim 3, is characterized in that,
Refractive index and the abbe number scope of described first positive lens are respectively: 1.45 < n1 < 1.60,50 < v1 < 75;
Refractive index and the abbe number scope of described second positive lens are respectively: 1.45 < n2 < 1.75,50 < v2 < 70;
Refractive index and the abbe number scope of described 3rd negative lens are respectively: 1.65 < n3 < 1.95,20 < v3 < 30;
Refractive index and the abbe number scope of described 4th negative lens are respectively: 1.45 < n4 < 1.75,20 < v4 < 40.
5. eyepiece camera lens as claimed in claim 4, is characterized in that,
Refractive index and the abbe number of described first positive lens are respectively: n1=1.491786, v1=57.327362;
Refractive index and the abbe number of described second positive lens are respectively: n2=1.546780, v2=62.741102;
Refractive index and the abbe number of described 3rd negative lens are respectively: n3=1.9176130, v3=21.510740;
Refractive index and the abbe number of described 4th negative lens are respectively: n4=1.585470, v4=29.909185.
6. eyepiece camera lens as claimed in claim 5, is characterized in that,
Described first positive lens adopts the plastic material of PMMA model;
Described second positive lens adopts the glass material of H-BAK3 model;
Described 3rd negative lens adopts the glass material of ZF14 model;
Described 4th negative lens adopts the plastic material of PC model.
7. wear an optical system, it is characterized in that, this is worn optical system and comprises successively against light direction: diaphragm, the eyepiece camera lens according to any one of claim 1-6, and micro-display screen.
8. wear optical system as claimed in claim 7, it is characterized in that, described micro-display screen is 0.7 inch of 1080p M-OLED display screen.
9. wear optical system as claimed in claim 7 or 8, it is characterized in that, described diaphragm is that L, L are less than 25mm to the distance of described micro-display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850011.4U CN204422862U (en) | 2014-12-26 | 2014-12-26 | A kind of eyepiece camera lens and wear optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420850011.4U CN204422862U (en) | 2014-12-26 | 2014-12-26 | A kind of eyepiece camera lens and wear optical system |
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| Publication Number | Publication Date |
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| CN204422862U true CN204422862U (en) | 2015-06-24 |
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| CN201420850011.4U Withdrawn - After Issue CN204422862U (en) | 2014-12-26 | 2014-12-26 | A kind of eyepiece camera lens and wear optical system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570323A (en) * | 2014-12-26 | 2015-04-29 | 青岛歌尔声学科技有限公司 | Eyepiece lens assembly and head-mounted optical system |
| CN105527713A (en) * | 2016-01-26 | 2016-04-27 | 深圳市谛源光科有限公司 | Optical system used for virtual reality device |
| CN107783294A (en) * | 2016-08-31 | 2018-03-09 | 深圳超多维科技有限公司 | A kind of VR display devices and VR display devices |
| TWI633359B (en) * | 2017-01-11 | 2018-08-21 | 玉晶光電股份有限公司 | Ocular optical system |
| CN108983409A (en) * | 2018-09-11 | 2018-12-11 | 沈阳师范大学 | A kind of microspur eyepiece lens and the photographic device for carrying the microspur eyepiece lens |
-
2014
- 2014-12-26 CN CN201420850011.4U patent/CN204422862U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104570323A (en) * | 2014-12-26 | 2015-04-29 | 青岛歌尔声学科技有限公司 | Eyepiece lens assembly and head-mounted optical system |
| CN106405819A (en) * | 2014-12-26 | 2017-02-15 | 歌尔科技有限公司 | Eyepiece lens and head-mounted optical system |
| CN106405819B (en) * | 2014-12-26 | 2019-04-30 | 歌尔科技有限公司 | A kind of eyepiece camera lens and wear optical system |
| CN105527713A (en) * | 2016-01-26 | 2016-04-27 | 深圳市谛源光科有限公司 | Optical system used 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 |
| CN107783294A (en) * | 2016-08-31 | 2018-03-09 | 深圳超多维科技有限公司 | A kind of VR display devices and VR display devices |
| TWI633359B (en) * | 2017-01-11 | 2018-08-21 | 玉晶光電股份有限公司 | Ocular optical system |
| US10295788B2 (en) | 2017-01-11 | 2019-05-21 | Genius Electronic Optical Co., Ltd. | Ocular optical system |
| CN108983409A (en) * | 2018-09-11 | 2018-12-11 | 沈阳师范大学 | A kind of microspur eyepiece lens and the photographic device for carrying the microspur eyepiece lens |
| CN108983409B (en) * | 2018-09-11 | 2020-09-25 | 沈阳师范大学 | Macro eyepiece lens and camera device carrying same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150624 Effective date of abandoning: 20170208 |