CN204360009U - A kind of micro-display eyepiece, wear eyepiece system and micro-display helmet - Google Patents
A kind of micro-display eyepiece, wear eyepiece system and micro-display helmet Download PDFInfo
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- CN204360009U CN204360009U CN201420806097.0U CN201420806097U CN204360009U CN 204360009 U CN204360009 U CN 204360009U CN 201420806097 U CN201420806097 U CN 201420806097U CN 204360009 U CN204360009 U CN 204360009U
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Abstract
The utility model discloses a kind of micro-display eyepiece, wear eyepiece system and micro-display helmet, described micro-display eyepiece comprises the first positive lens, the second positive lens, the 3rd negative lens and the 4th positive lens that set gradually along light, described first positive lens has first surface towards image space and the convex second surface to object space, and described first surface is plane; 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; Described 4th positive lens has convex the 7th surface to image space and recessed the 8th surface to object space.The optical system of the technical program adopts spherical glass, aspherical plastic lens appropriate design, correcting the aberrations such as ratio chromatism, the curvature of field, astigmatism, when the image quality of guarantee system, realize the demand at miniaturization, lightweight and Large visual angle angle simultaneously.
Description
Technical field
The utility model relates to optical technical field, particularly the micro-display eyepiece of one, 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, but due to luminescent screen little, be difficult to accomplish Large visual angle angle.Micro-display helmet screen field angle popular on market, substantially below 40 °, have impact on experience effect greatly.
The reason that micro-display helmet system of the prior art is difficult to realize Large visual angle angle has 2 points at least: one, and the luminescent screen of equipment is very little, can cause the pressure arrived very much when realizing Large visual angle to eyepiece; They are two years old, general micro display system adopts LCOS (Liquid Crystal on Silicon, the attached silicon of liquid crystal) or DLP (Digital Light Procession, digital light process) technology processes image, but this two germlines subordination is in reflecting system, illuminating ray carrys out synthetic image through these two kinds of chip surface reflections, therefore needs reflecting prism, but the limited clear aperture of reflecting prism, is still difficult to realize Large visual angle angle.
Utility model content
In view of the above problems, propose a kind of micro-display eyepiece, wear eyepiece system and micro-display helmet.The utility model provides micro-display eyepiece, wears eyepiece system and micro-display helmet, to overcome the problems referred to above or to solve the problem at least in part.
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 micro-display eyepiece, comprises the first positive lens, the second positive lens, the 3rd negative lens and the 4th positive lens that set gradually along light,
Described first positive lens has first surface towards image space and the convex second surface to object space, and described first surface is plane;
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;
Described 4th positive lens has convex the 7th surface to image space and recessed the 8th surface to object space.
Preferably, the 7th surface and the 8th surface of the 5th surface of the second surface of described first positive lens, described 3rd negative lens and the 6th surface, described 4th positive lens are aspheric surface, and the 3rd surperficial and the 4th surface of described second positive lens is sphere.
Preferably, described first positive lens, described 3rd negative lens and described 4th 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< 1.95, dispersion range is 20 < v
3< 30;
The ranges of indices of refraction of described 4th positive lens is 1.45 < n
4< 1.75, dispersion range is 50 < v
4< 70.
Preferably, described first positive lens is the plastic material of PMMA model, its refractive index n
1=1.491786, dispersion v
1=57.3;
Described second positive lens is the glass material of H-LAK12 model, its refractive index n
2=1.696801, dispersion v
2=56.2;
Described 3rd negative lens is the plastic material of OKP1 model, its refractive index n
3=1.640, dispersion v
3=22.5;
Described 4th positive lens is the glass material of PMMA model, its refractive index n
4=1.491786, dispersion v
4=57.3.
The micro-display eyepiece of one of the technical program is made up of 4 lens, the first positive lens, the second positive lens, the 3rd negative lens and the 4th positive lens is set gradually along light, by the lens Rational Arrangement of spherical glass, aspheric surface plastics, when ensureing the image quality of system, realize the demand at miniaturization, lightweight and Large visual angle angle.
On the other hand, the utility model provides one and wears eyepiece system, comprises micro-display eyepiece that luminescent screen and technique scheme provide.
Preferably, the image planes wearing eyepiece system described in are positioned at human eye pupil place.
Preferably, the luminescent screen wearing eyepiece system described in is 1080P, 0.7 inch of M-OLED display screen.
Preferably, described in wear eyepiece system overall length be less than 30mm, general assembly (TW) is less than 20g.
The technical program wear eyepiece system, adopt and there is the luminescent screen of self luminous M-OLED display screen as system, compared to LCOS or DLP technology of the prior art, do not need reflecting prism, therefore, it is possible to break away from the restriction of clear aperature, and do not need external light source, the volume of system can be reduced further.
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 55 ° of diagonal field of view angles, 45 ° of horizontal field of view angles and optical system overall length is less than 30mm, general assembly (TW) is less than 20g, 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 micro-display eyepiece that Fig. 2 provides for the utility model embodiment;
The optical transfer function curve synoptic diagram of micro-display eyepiece that Fig. 3 provides for the utility model embodiment;
The curvature of field curve synoptic diagram of micro-display eyepiece that Fig. 4 provides for the utility model embodiment;
The distortion aberration curve synoptic diagram of micro-display eyepiece that Fig. 5 provides for the utility model embodiment;
The point range figure of micro-display eyepiece that Fig. 6 provides for the utility model embodiment;
The ratio chromatism, curve synoptic diagram of micro-display eyepiece that Fig. 7 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 reducing system bulk.
This optical system comprises three positive lenss and a negative lens:
Described first positive lens is plano-convex positive lens, because the surface near human eye place is easily dirty, therefore first surface is set to plane, convenient for cleaning;
Described second positive lens is biconvex positive lens, adopts the material that the dispersion of refractive index height is low, reduces the generation of monochromatic aberration and aberration; This
Described 3rd negative lens is double-concave negative lens, and two concave surfaces adopt aspheric surface, corrects monochromatic aberration and the aberration of two positive lenss generations;
Described 4th positive lens is meniscus shaped lens, is used for correct astigmatism, optimizes system with edge picture element.
Based on above-mentioned design philosophy, the utility model provides a kind of micro-display eyepiece, as shown in Figure 2, for the structural representation of a kind of micro-display eyepiece that the utility model embodiment provides, this micro-display eyepiece comprises that to set gradually along light be the first positive lens L1, the second positive lens L2, the 3rd negative lens L3 and the 4th positive lens L4.
First positive lens L1 has first surface 21 towards image space and the convex second surface 22 to object space, because first surface 21 is near human eye, easily dirty, therefore first surface 21 is set to plane, with convenient for cleaning.
Second positive lens L2 has convex the 3rd surface 23 and convex the 4th surface 24 to object space to image space; Second positive lens L2 is for reducing the generation of monochromatic aberration and aberration.
3rd negative lens L3 has recessed the 5th surface 25 and recessed the 6th surface 26 to object space to image space; 3rd negative lens L3 is for correcting monochromatic aberration and the aberration of the first positive lens L1 and the second positive lens L2 generation.
4th positive lens L4 has convex the 7th surface 27 and recessed the 8th surface 28 to object space to image space; 4th positive lens L4 is bent moon positive lens, for correct astigmatism, optimization system edge picture element.
In preferred embodiment of the present utility model, the first positive lens L1, the 3rd negative lens L3 and the 4th positive lens L4 are plastic material, and the second positive lens L2 is glass material; The second surface 22 of the first positive lens L1 is aspheric surface, and the 3rd surface 23 of the second positive lens L2 and the 4th surface are sphere, and the the 5th surperficial 25 and the 6th surface 26 of the 3rd negative lens L3, the 7th surface 27 of the 4th positive lens L4 and the 8th surface 28 are aspheric surface.The technical program, by adopting aspheric surface plastic material lens and spherical glass material lens combination, to ensure micro-display eyepiece miniaturization, lightweight, improves 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< 1.95, dispersion range is 20 < v
3< 30;
The ranges of indices of refraction of the 4th positive lens L4 is 1.45 < n
4< 1.75, dispersion range is 50 < v
4< 70.
Concrete, the first positive lens L1 is the plastic material of PMMA model, its refractive index n
1=1.491786, dispersion v
1=57.3;
Second positive lens L2 is the glass material of H-LAK12 model, its refractive index n
2=1.696801, dispersion v
2=56.2;
3rd negative lens L3 is the plastic material of OKP1 model, its refractive index n
3=1.640, dispersion v
3=22.5;
The glass material of the 4th positive lens to be L4 be PMMA model, its refractive index n
4=1.491786, dispersion v
4=57.3.
In technique scheme, the optical system be made up of 4 lens can realize 55 ° of diagonal field of view angles, 45 ° of horizontal field of view angles, and corrects the aberrations such as ratio chromatism, the curvature of field, astigmatism, and undistorted, 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: micro-display eyepiece that luminescent screen and technique scheme provide.
These image planes wearing eyepiece system are positioned at human eye pupil place, and namely the diaphragm of this system is positioned at human eye pupil place.
Preferably, this luminescent screen wearing eyepiece system is 1080P (Progressive scan, lines by line scan), 0.7 inch of M-OLED display screen.
Wherein 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.
This wears eyepiece system can reach following technical indicator:
55 ° of diagonal field of view angles, 45 ° of horizontal field of view angles;
System overall length is less than 30mm, and general assembly (TW) is less than 20g;
Distance of exit pupil is 18mm;
The high 9.5mm of maximum picture half;
The system compensation aberrations such as ratio chromatism, the curvature of field, astigmatism, image quality is better.
Another embodiment of the present utility model is supplied to a kind of micro-display helmet, and what this micro-display helmet comprised technique scheme wears eyepiece system.
Optical system due to micro-display helmet can realize 55 ° of diagonal field of view angles, 45 ° of horizontal field of view angles and optical system overall length is less than 30mm, general assembly (TW) is less than 20g, distance of exit pupil is 18mm, maximum picture half is high is 9.5mm, therefore, it is possible to make this micro-display helmet meet miniaturization, lightweight, the market demand with great visual angle.
The optical transfer function curve synoptic diagram of micro-display eyepiece that Fig. 3 provides for the utility model embodiment, this optical transfer function MTF be 20 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 figure 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 of micro-display eyepiece that Fig. 4 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 of micro-display eyepiece that Fig. 5 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 the micro-display eyepiece in the technical program is less than 3%, and this key diagram distortion of image is very little, can think undistorted.
The point range figure of micro-display eyepiece that Fig. 6 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 this camera lens on imaging plane (IMA image planes) from 0.000mm to 9.500mm image height is followed successively by 13.900 μm, 11.871 μm, 10.293 μm, 14.697 μm, 17.008 μm, 19.843 μm, 18.711 μm, 16.666 μm, 15.635 μm, 16.390 μm, 18.270 μm, it can thus be appreciated that the aberration of native system obtains good correction.
The ratio chromatism, curve synoptic diagram of micro-display eyepiece that Fig. 7 provides for the utility model embodiment, the longitudinal axis is field angle, and transverse axis is the difference in height of relative green glow hot spot, and unit is μm.R curve in figure and B curve represent that the relative green glow of Red and blue light (green glow is the longitudinal axis in figure) is poor at the delivery altitude of image planes respectively, the difference of R curve and B curve is the ratio chromatism, of system, in Fig. 7 relative to ratio chromatism, value on each position of the longitudinal axis much smaller than 20 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 this micro-display helmet comprises: micro-display eyepiece that luminescent screen and technique scheme provide.
In sum, the utility model discloses a kind of micro-display eyepiece, wear eyepiece system and wear visual device, the optical system of this micro-display eyepiece is made up of 4 lens, the first positive lens, the second positive lens, the 3rd negative lens and the 4th positive lens is set gradually along light, by the lens Rational Arrangement of spherical glass, aspheric surface plastics, when ensureing the image quality of system, realize the demand at 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. a micro-display eyepiece, is characterized in that, comprises the first positive lens, the second positive lens, the 3rd negative lens and the 4th positive lens that set gradually along light,
Described first positive lens has first surface towards image space and the convex second surface to object space, and described first surface is plane;
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;
Described 4th positive lens has convex the 7th surface to image space and recessed the 8th surface to object space.
2. micro-display eyepiece according to claim 1, it is characterized in that, 7th surface and the 8th surface of the 5th surface of the second surface of described first positive lens, described 3rd negative lens and the 6th surface, described 4th positive lens are aspheric surface, and the 3rd surperficial and the 4th surface of described second positive lens is sphere.
3. micro-display eyepiece according to claim 1, is characterized in that, described first positive lens, described 3rd negative lens and described 4th positive lens are plastic material, and described second positive lens is glass material.
4. micro-display 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< 1.95, dispersion range is 20 < v
3< 30;
The ranges of indices of refraction of described 4th positive lens is 1.45 < n
4< 1.75, dispersion range is 50 < v
4< 70.
5. micro-display 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=57.3;
Described second positive lens is the glass material of H-LAK12 model, its refractive index n
2=1.696801, dispersion v
2=56.2;
Described 3rd negative lens is the plastic material of OKP1 model, its refractive index n
3=1.640, dispersion v
3=22.5;
Described 4th positive lens is the glass material of PMMA model, its refractive index n
4=1.491786, dispersion v
4=57.3.
6. wear an eyepiece system, it is characterized in that, described in wear eyepiece system and comprise: luminescent screen and the micro-display eyepiece as described in any one of claim 1-5.
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 luminescent screen be 1080P, 0.7 inch of M-OLED display screen.
9. according to claim 6ly wear eyepiece system, it is characterized in that, described in wear eyepiece system overall length be less than 30mm, general assembly (TW) is less than 20g.
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 |
|---|---|---|---|
| CN201420806097.0U CN204360009U (en) | 2014-12-17 | 2014-12-17 | A kind of micro-display eyepiece, wear eyepiece system and micro-display helmet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420806097.0U CN204360009U (en) | 2014-12-17 | 2014-12-17 | A kind of micro-display eyepiece, wear eyepiece system and micro-display helmet |
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|---|---|
| CN204360009U true CN204360009U (en) | 2015-05-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536130A (en) * | 2014-12-17 | 2015-04-22 | 青岛歌尔声学科技有限公司 | Micro-display eye lens, head-mounted eye lens system and micro-display head-mounted equipment |
| CN106896500A (en) * | 2015-12-18 | 2017-06-27 | 台达电子工业股份有限公司 | Display device |
-
2014
- 2014-12-17 CN CN201420806097.0U patent/CN204360009U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104536130A (en) * | 2014-12-17 | 2015-04-22 | 青岛歌尔声学科技有限公司 | Micro-display eye lens, head-mounted eye lens system and micro-display head-mounted equipment |
| CN104536130B (en) * | 2014-12-17 | 2017-02-22 | 青岛歌尔声学科技有限公司 | Micro-display eye lens, head-mounted eye lens system and micro-display head-mounted equipment |
| CN106896500A (en) * | 2015-12-18 | 2017-06-27 | 台达电子工业股份有限公司 | Display device |
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|---|---|---|---|
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201019 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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| TR01 | Transfer of patent right |