CN204515242U - A kind of eyepiece, wear eyepiece system and micro-display helmet - Google Patents
A kind of eyepiece, wear eyepiece system and micro-display helmet Download PDFInfo
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- CN204515242U CN204515242U CN201520054162.3U CN201520054162U CN204515242U CN 204515242 U CN204515242 U CN 204515242U CN 201520054162 U CN201520054162 U CN 201520054162U CN 204515242 U CN204515242 U CN 204515242U
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- eyepiece
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Abstract
The utility model discloses a kind of eyepiece, wear eyepiece system and micro-display helmet, described eyepiece comprises the first positive lens, the second positive lens, the 3rd negative lens that set gradually along light, and described first positive lens has the convex first surface to image space and the convex second surface to object space; Described second positive lens has convex the 3rd surface to image space and convex the 4th surface to object space; Described 3rd negative lens has recessed the 5th surface to image space and recessed the 6th surface to object space.The optical system appropriate design spherical glass of the technical program, the lens combination of plastic aspherical element, while acquisition Large visual angle angle, the aberrations such as thorough correction ratio chromatism, the curvature of field, astigmatism, the image quality of guarantee system, and the technical program can also reach the demand at miniaturization, lightweight and Large visual angle angle.
Description
Technical field
The utility model relates to optical technical field, particularly a kind of eyepiece, wear eyepiece system and micro-display helmet.
Background technology
At present, micro-display helmet system extensively gets consumer reception due to features such as volume are little, lightweight.Especially the visual effect of a shock can be built in the Large visual angle angle of system to user, allows user watch film in the cinema screening Room as being in.
But for being applied to the Large visual angle angle eyepiece of micro-display helmet system, ratio chromatism, the curvature of field, astigmatism are all the aberrations affecting image quality, therefore need a kind of suitable optical design badly and thoroughly solve the problem.
Utility model content
The utility model provides, and while acquisition Large visual angle angle, can correct the aberrations such as ratio chromatism, the curvature of field, astigmatism.
For achieving the above object, the technical solution of the utility model is achieved in that
On the one hand, the utility model provides a kind of eyepiece, comprises the first positive lens, the second positive lens, the 3rd negative lens that set gradually along light,
Described first positive lens has the convex first surface to image space and the convex second surface to object space;
Described second positive lens has convex the 3rd surface to image space and convex the 4th surface to object space;
Described 3rd negative lens has recessed the 5th surface to image space and recessed the 6th surface to object space.
Preferably, the 5th surface of the first surface of described first positive lens and second surface, described 3rd negative lens and the 6th surface are aspheric surface; 3rd surface of described second positive lens and the 4th surface are sphere.
Preferably, described first positive lens and described 3rd negative positive lens are plastic material, and described second positive lens is glass material.
Preferably, the ranges of indices of refraction of described first positive lens is 1.45 < n
1< 1.60, dispersion range is 50 < v
1< 75;
The ranges of indices of refraction of described second positive lens is 1.45 < n
2< 1.75, dispersion range is 50 < v
2< 70;
The ranges of indices of refraction of described 3rd negative lens is 1.60 < n
3< 1.75, dispersion range is 20 < v
3< 30.
Further preferably, described first positive lens is the plastic material of PMMA model, its refractive index n
1=1.491786, dispersion v
1=57.327362;
Described second positive lens is the glass material of H-LAK12 model, its refractive index n
2=1.696801, dispersion v
2=56.199825;
Described 3rd negative lens is the plastic material of OKP1 model, its refractive index n
3=1.640, dispersion v
3=22.5.
The eyepiece of the technical program is made up of 3 lens, the first positive lens, the second positive lens, the 3rd negative lens is set gradually along light, by the lens Rational Arrangement of spherical glass, aspheric surface plastics, while acquisition Large visual angle angle, can thoroughly correct the aberrations such as ratio chromatism, the curvature of field, astigmatism, the image quality of guarantee system, and the demand that can realize miniaturization, lightweight and Large visual angle angle.
On the other hand, the utility model provides one and wears eyepiece system, comprises the eyepiece that micro-display screen and technique scheme provide;
Described micro-display screen is close to the 6th surface of the 3rd negative lens of described eyepiece.
Wherein, the image planes wearing eyepiece system described in are positioned at human eye pupil place.
Preferably, the micro-display screen wearing eyepiece system described in is 1080P, 0.7 inch of M-OLED display screen.
Preferably, the distance between the 6th surface of described micro-display screen and described 3rd negative lens is adjustable.
The technical program wear eyepiece system; adopt and there is the micro-display screen of self luminous M-OLED display screen as system; fundamentally can eliminate Large visual angle micro-display helmet system and occur granular shortcoming when watching, and the technical program is also applied to more than the near-sighted user of 500 °.
Another aspect, the utility model provides a kind of micro-display helmet, and what comprise technique scheme wears eyepiece system.
Micro-display helmet of the technical program can realize 45 ° of horizontal field of view angles and optical system overall length is less than 28mm, general assembly (TW) is less than 15g, therefore, it is possible to meet lightweight, miniaturization, the market demand with great visual angle.
Accompanying drawing explanation
Fig. 1 is the principle of work schematic diagram wearing visual device;
The structural representation of a kind of eyepiece that Fig. 2 provides for the utility model embodiment;
The eyepiece system of wearing that Fig. 3-a provides for the utility model embodiment corrects 900 ° of near-sighted optical path states figure;
The eyepiece system of wearing that Fig. 3-b provides for the utility model embodiment corrects 500 ° of near-sighted optical path states figure;
Fig. 3-c for the utility model embodiment provide wear eyepiece system non-correct myopia time optical path states figure;
The optical transfer function curve synoptic diagram wearing eyepiece system that Fig. 4 provides for the utility model embodiment;
The curvature of field curve synoptic diagram wearing eyepiece system that Fig. 5 provides for the utility model embodiment;
The distortion aberration curve synoptic diagram wearing eyepiece system that Fig. 6 provides for the utility model embodiment;
The point range figure wearing eyepiece system that Fig. 7 provides for the utility model embodiment;
The ratio chromatism, curve synoptic diagram wearing eyepiece system that Fig. 8 provides for 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 is the principle of work schematic diagram wearing visual device, and human eye is through micro-display eyepiece viewing display screen, and the light that display screen sends, by this eyepiece, and in the huge virtual image of distance human eye 5m place's formation one, then is received by human eye.
Design this when wearing the optical system of visual device, adopt reverse trace, make the display location wearing visual device in the image planes position of optical system, diaphragm is positioned at human eye pupil place; Wherein display screen adopts M-OLED display screen, is used for eliminating granular defect.
This optical system adopts special positive and negative structure, with aberrations such as abundant correcting chromatic aberration, the curvature of field, astigmatisms, in system, first positive lens is for converging the outer chief ray of the axle dispersed, outer for axle chief ray bends by second positive lens thereafter further, now system will produce huge aberration, therefore after second positive lens, place the negative lens correcting chromatic aberration of a high dispersion, meanwhile, negative lens adopts aspheric surface to correct the aberrations such as astigmatism.
In addition, the first positive lens of this optical system and the 3rd negative lens all adopt plastic aspherical element, and second positive lens adopts glass sphere.The reason of design like this is: the outer delivery altitude of chief ray on second lens of axle is the highest, the most easily produce aberration, and partial optical glass refraction is high, dispersion is low, produces aberration little, therefore adopts low dispersion to reduce the generation of aberration; Plastics are more easily processed into aspheric surface relative to glass, and the density ratio optical glass of plastics is little a lot, price opposing glass is low, therefore, first lens and the 3rd lens adopt the face type of Glass aspheric not only can reduce system bulk, mitigation system weight, also help large batch of production, cost-saving.
Based on above-mentioned design philosophy, the utility model provides a kind of eyepiece, as shown in Figure 2, be the structural representation of a kind of eyepiece that the utility model embodiment provides, this eyepiece comprises that to set gradually along light be the first positive lens L1, the second positive lens L2 and the 3rd negative lens L3.
First positive lens L1 has the convex first surface 21 to image space and convex second surface 22, the first positive lens L1 to object space for converging the outer chief ray of the axle dispersed.
Second positive lens L2 has convex the 3rd surface 23 to image space and convex the 4th surface 24, the second positive lens L2 to object space is used for making the outer chief ray of axle bend towards optical axis further.
3rd negative lens L3 has recessed the 5th surperficial 25 and recessed the 6th surface the 26, three negative lens L3 to object space to image space for correcting the aberration such as dispersion, astigmatism.
In preferred embodiment of the present utility model, the first positive lens L1 and the 3rd negative lens L3 is plastic material, and the second positive lens L2 is glass material; 5th surface 25 of the first surface 21 of the first positive lens L1, second surface 22 and the 3rd negative lens L3 and the 6th surface 26 be aspheric surface, and the the 3rd surperficial 23 and the 4th surface of the second positive lens L2 is sphere.The lens of the technical program by employing aspheric surface plastic material and the lens combination of spherical glass material, to ensure eyepiece miniaturization, lightweight, improve image quality simultaneously.
Further preferably, the ranges of indices of refraction of the first positive lens L1 is 1.45 < n
1< 1.60, dispersion range is 50 < v
1< 75;
The ranges of indices of refraction of the second positive lens L2 is 1.45 < n
2< 1.75, dispersion range is 50 < v
2< 70;
The ranges of indices of refraction of the 3rd negative lens L3 is 1.60 < n
3< 1.75, dispersion range is 20 < v
3< 30.
Concrete, the first positive lens L1 is the plastic material of PMMA model, its refractive index n
1=1.491786, dispersion v
1=57.327362;
Second positive lens L2 is the glass material of H-LAK12 model, its refractive index n
2=1.696801, dispersion v
2=56.199825;
3rd negative lens L3 is the plastic material of OKP1 model, its refractive index n
3=1.640, dispersion v
3=22.5.
In technique scheme, the optical system of the positive and negative structure be made up of 3 lens while acquisition Large visual angle angle, can thoroughly correct the aberrations such as ratio chromatism, the curvature of field, astigmatism.Eyepiece in the present embodiment can realize 45 ° of horizontal field of view angles, and corrects the aberrations such as ratio chromatism, the curvature of field, astigmatism, and almost do not have anamorphose, image quality is better.
Another embodiment of the present utility model is supplied to one and wears eyepiece system, and this is worn eyepiece system and comprises: the eyepiece that micro-display screen and technique scheme provide, and this micro-display screen is close to the 6th surface 26 of the 3rd negative lens L3 of eyepiece;
The image planes wherein wearing eyepiece system are positioned at human eye pupil place; Image height due to eyepiece is greater than the maximum height (0.7 inch) of display screen, therefore just can not lose picture because of wearing, can provide more loose environment for use to user.
In actual applications; above-mentioned micro-display screen preferably adopts 1080P (Progressive scan; line by line scan), 0.7 inch of M-OLED display screen, can fundamentally eliminate Large visual angle micro-display helmet system watch time there is granular shortcoming.
M-OLED display screen compares LCOS (Liquid Crystal on Silicon, the attached silicon of liquid crystal) or DLP (Digital Light Procession, digital light process) technology, there is self luminous advantage, therefore do not need external light source, also do not need reflecting prism, the restriction of clear aperature can be broken away from, can also the volume of further minimizing system, and 1080P resolution effectively can reduce granular sensation, improve image quality.
It should be noted that, micro-display screen in the present embodiment and the distance between the 6th surface 26 of the 3rd negative lens L3 adjustable, adapt to near-sighted user by regulating the distance (other inter-element spacings are constant) between the 6th surface 26 of micro-display screen and the 3rd lens L3.When employing 0.7 inch of M-OLED display screen, minor increment between M-OLED display chip and the 3rd negative lens L3 is 4.1mm, the cover glass of BK7 material of removing display chip 0.7mm and the step width of 05mm, above-mentioned minor increment is remaining 2.2mm also, compensate for myopia is carried out by regulating this distance, shorter the corrected myopia degree of this distance is higher, wearing eyepiece system and can compensate at most nearly 900 degree of focal lengths of producing of myopia in the present embodiment; Concrete with reference to figure 3-a ~ 3-c, Fig. 3-a ~ 3-c is the optical path states figure worn when eyepiece system corrects 900 °, 500 ° and non-correct myopia that the present embodiment provides respectively, as can be seen from the figure, when correcting 900 degree of myopia, micro-display screen distance the 3rd negative lens L3's is nearest, during non-correct myopia, the distance of micro-display screen distance the 3rd negative lens L3 farthest.
The wearing eyepiece system and can reach following technical indicator of the present embodiment:
45 ° of horizontal field of view angles;
System overall length is less than 28mm, and general assembly (TW) is no more than 15g;
The system compensation aberrations such as ratio chromatism, the curvature of field, astigmatism, image quality is better;
Almost do not have anamorphose, distortion is less than 5%;
There is longer rear cut-off distance, be applied to more than 500 ° of near-sighted users;
There is larger visual field surplus and emergent pupil distance surplus;
Be applicable to 1080P 0.7 inch of M-OLED display screen.
The optical transfer function curve synoptic diagram wearing eyepiece system that Fig. 4 provides for the utility model embodiment, this optical transfer function MTF be 30 lines under MTF.In figure, transverse axis represents the demand pairs of every millimeter, dimensional units is lp/mm, the longitudinal axis represents the number percent that imaging picture element reaches situation in kind, from 0 to 1, optical transfer function MTF can the image quality of concentrated expression system, more level and smooth and the relative transverse axis height higher (namely more close to 1) of its curve shape, the image quality of system is better; Depict the picture element under 0.000mm to 9.500mm image height in Fig. 6 respectively, as can be seen from the figure, the curve of transport function is comparatively smoothly compact, and the image quality of camera lens is better.
The curvature of field curve synoptic diagram wearing eyepiece system that Fig. 5 provides for the utility model embodiment, t line in figure is meridianal curvature of field, s line is Sagittal field curvature, the difference of meridianal curvature of field and Sagittal field curvature is the astigmatism of system, the curvature of field and astigmatic influence the aberration of the outer field rays of system axle, and difference crosses the image quality of the serious system that the has influence on off-axis ray of conference.As can be seen from the figure, the curvature of field of native system and astigmatism are all corrected in very low range.
The distortion aberration curve synoptic diagram wearing eyepiece system that Fig. 6 provides for the utility model embodiment, distortion can not the sharpness of influential system, and only can cause system diagram distortion of image, distortion can be solved by later image process.The distortion of wearing eyepiece system in the technical program is less than 5%, and this key diagram distortion of image is very little, can think undistorted.
The point range figure wearing eyepiece system that Fig. 7 provides for the utility model embodiment, point range figure display be system each field rays image planes place converge and formed disc of confusion, the system of characterizing obtains the characteristic of various difference, and the image quality of RMS RADIUS (root mean square radii) the less proof system in point range figure is better.In Fig. 7, three kinds of greyscale color represent the light of three kinds of wave bands respectively, and the aberration of the system of more making out a certificate that the disc of confusion of three kinds of greyscale color divides is larger; The disc of confusion root mean square radii of native system on imaging plane (IMA image planes) from 0.000mm to 9.500mm image height is followed successively by 6.183 μm, 6.204 μm, 6.784 μm, 8.800 μm, 11.768 μm, 14.418 μm, 15.656 μm, 14.931 μm, 13.944 μm, 14.243 μm, 13.940 μm, it can thus be appreciated that the aberration of native system obtains good correction.
The ratio chromatism, curve synoptic diagram wearing eyepiece system that Fig. 8 provides for the utility model embodiment, the longitudinal axis is field angle, and transverse axis is the difference in height of relative green glow (green glow is the longitudinal axis in figure) hot spot, and unit is μm.C curve in figure is the ratio chromatism, curve of system, in Fig. 8 relative to ratio chromatism, value on each position of the longitudinal axis much smaller than 16 μm, illustrate that the aberration of native system obtains good correction.
Another embodiment of the present utility model is supplied to a kind of micro-display helmet, and what this micro-display helmet comprised that technique scheme provides wears eyepiece system.
In sum, the utility model discloses a kind of eyepiece, wear eyepiece system and wear visual device, this eyepiece is made up of 3 lens, the first positive lens, the second positive lens, the 3rd negative lens is set gradually along light, by the lens Rational Arrangement of spherical glass, aspheric surface plastics, while acquisition Large visual angle angle, can thoroughly correct the aberrations such as ratio chromatism, the curvature of field, astigmatism, the image quality of guarantee system, and the demand that can realize miniaturization, lightweight and Large visual angle angle.
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 (10)
1. an eyepiece, is characterized in that, comprises the first positive lens, the second positive lens, the 3rd negative lens that set gradually along light,
Described first positive lens has the convex first surface to image space and the convex second surface to object space;
Described second positive lens has convex the 3rd surface to image space and convex the 4th surface to object space;
Described 3rd negative lens has recessed the 5th surface to image space and recessed the 6th surface to object space.
2. eyepiece according to claim 1, is characterized in that, the 5th surface and the 6th surface of the first surface of described first positive lens and second surface, described 3rd negative lens are aspheric surface; 3rd surface of described second positive lens and the 4th surface are sphere.
3. eyepiece according to claim 1, is characterized in that, described first positive lens and described 3rd negative positive lens are plastic material, and described second positive lens is glass material.
4. eyepiece according to claim 1, is characterized in that,
The ranges of indices of refraction of described first positive lens is 1.45 < n
1< 1.60, dispersion range is 50 < v
1< 75;
The ranges of indices of refraction of described second positive lens is 1.45 < n
2< 1.75, dispersion range is 50 < v
2< 70;
The ranges of indices of refraction of described 3rd negative lens is 1.60 < n
3< 1.75, dispersion range is 20 < v
3< 30.
5. eyepiece according to claim 4, is characterized in that,
Described first positive lens is the plastic material of PMMA model, its refractive index n
1=1.491786, dispersion v
1=57.327362;
Described second positive lens is the glass material of H-LAK12 model, its refractive index n
2=1.696801, dispersion v
2=56.199825;
Described 3rd negative lens is the plastic material of OKP1 model, its refractive index n
3=1.640, dispersion v
3=22.5.
6. wear an eyepiece system, it is characterized in that, described in wear eyepiece system and comprise: micro-display screen and the eyepiece described in any one of claim 1-5;
Described micro-display screen is close to the 6th surface of the 3rd negative lens of described eyepiece.
7. according to claim 6ly wear eyepiece system, it is characterized in that, described in wear eyepiece system image planes be positioned at human eye pupil place.
8. according to claim 6ly wear eyepiece system, it is characterized in that, described in wear eyepiece system micro-display screen be 1080P, 0.7 inch of M-OLED display screen.
9. according to any one of claim 6-8, wear eyepiece system, it is characterized in that, the distance between the 6th surface of described micro-display screen and described 3rd negative lens is adjustable.
10. a micro-display helmet, is characterized in that, comprises wearing eyepiece system described in any one of claim 6-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520054162.3U CN204515242U (en) | 2015-01-26 | 2015-01-26 | A kind of eyepiece, wear eyepiece system and micro-display helmet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520054162.3U CN204515242U (en) | 2015-01-26 | 2015-01-26 | A kind of eyepiece, wear eyepiece system and micro-display helmet |
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| CN204515242U true CN204515242U (en) | 2015-07-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635333A (en) * | 2015-01-26 | 2015-05-20 | 青岛歌尔声学科技有限公司 | Eyepiece, headset eyepiece system and micro-display headset equipment |
| CN108227190A (en) * | 2016-12-21 | 2018-06-29 | 深圳市掌网科技股份有限公司 | A kind of camera lens module |
| CN110018553A (en) * | 2019-02-28 | 2019-07-16 | 苏州科技大学 | A kind of optical lens for virtual implementing helmet |
-
2015
- 2015-01-26 CN CN201520054162.3U patent/CN204515242U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635333A (en) * | 2015-01-26 | 2015-05-20 | 青岛歌尔声学科技有限公司 | Eyepiece, headset eyepiece system and micro-display headset equipment |
| CN108227190A (en) * | 2016-12-21 | 2018-06-29 | 深圳市掌网科技股份有限公司 | A kind of camera lens module |
| 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 |
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Effective date of registration: 20201015 Address after: 261031 north of Yuqing street, east of Dongming Road, high tech Zone, Weifang City, Shandong Province (Room 502, Geer electronic office building) Patentee after: GoerTek Optical Technology Co.,Ltd. Address before: International Exhibition Center of wealth 18 No. 266061 Shandong province Qingdao city Laoshan District No. 3 Qinling Mountains Road, building 5 floor Patentee before: Qingdao GoerTek Technology Co.,Ltd. |
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