CN104656245A - Head mount eyepiece system and head mount display equipment - Google Patents
Head mount eyepiece system and head mount display equipment Download PDFInfo
- Publication number
- CN104656245A CN104656245A CN201510073382.5A CN201510073382A CN104656245A CN 104656245 A CN104656245 A CN 104656245A CN 201510073382 A CN201510073382 A CN 201510073382A CN 104656245 A CN104656245 A CN 104656245A
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- Prior art keywords
- lens
- eyepiece system
- positive lens
- wear
- negative lens
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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
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a head mount eyepiece system and head mount display equipment. The head mount eyepiece system comprises a curved-surface display screen and two groups eyepieces respectively used for a left eye and a right eye; each group of the eyepiece is sequentially provided with a negative lens and a positive lens between a light path diaphragm and the curved surface display screen in the light incidence direction; the negative lens is a movable lens; the positive lens is a fixed lens; the negative lens can realize shearing movement relative to the positive lens, and the moving direction is perpendicular to an optical axis of the positive lens; the movement path is positioned in a plane determined by the optical axis of the positive lens and a center normal line of the curved surface display screen. According to the technical scheme, relative incidence height of light in the negative lens can be changed by moving the negative lens, so that the head mount eyepiece system can be adapted to curved-surface display screens with different curvatures.
Description
Technical field
The present invention relates to optical technical field, particularly one is worn eyepiece system and is worn display device.
Background technology
Along with the progress of science and technology, camber display screen will progress into the visual field of people, and therefore camber display screen also can be applied in wear-type visual device (Head Mount Display, HMD) system gradually.
HMD optical system coaxial now cannot meet camber display screen, and in curvature, has certain degree of freedom so need optical system can be satisfied with curve screens under certain curvature scope in the mode regulated due to camber display screen.
Summary of the invention
The invention provides one and wear eyepiece system and wear display device, can the camber display screen of adaptive different curvature by regulating.
For achieving the above object, technical scheme of the present invention is achieved in that
On the one hand, the invention provides one and wear eyepiece system, described in wear eyepiece system and comprise: camber display screen and be respectively used to two groups of eyepieces of left eye and right eye; Between light path diaphragm and described camber display screen, along light direction, often organize eyepiece and set gradually a negative lens and a positive lens,
Described negative lens is movable lens, and described positive lens is fixed lens;
Described negative lens can relative to positive lens do shear mobile, moving direction perpendicular to the optical axis of positive lens, the plane that the centre normal of optical axis and camber display screen that motion track is positioned at positive lens is determined.
Wherein, described negative lens comprises successively along light direction: the first surface for plane and the second surface for concave surface;
Described positive lens comprises successively along light direction: the 3rd surface for convex surface and the 4th surface for plane.
Wherein, the focal distance f of eyepiece system, the focal distance f of described negative lens is worn described in
1, the focal distance f of positive lens
2meet following relational expression:
Wherein, described in wear the overall length L of eyepiece system, after system, burnt l meets following relational expression:
Wherein, the displacement vector d of described negative lens, the subsequent corrosion R of described camber display screen meets following relational expression:
Preferably, the second surface of described negative lens and the 3rd surface of described positive lens are aspheric surface.
Further preferably, the highest aspheric item on described second surface and the 3rd surface is quadratic term,
The aspheric surface quadratic term coefficient on described second surface and the 3rd surface is respectively k
2, k
3, wherein-1 < k
2< 0 ,-20 < k
3<-1.
Further preferably, described negative lens and described positive lens are plastic material;
The ranges of indices of refraction of described negative lens is 1.45 < n
1< 1.75, dispersion range is 25 < v
1< 40;
The ranges of indices of refraction of described positive lens is 1.45 < n
2< 1.70, dispersion range is 50 < v
2< 75.
Further preferably, described negative lens is the plastic material of POLYCARB model, its refractive index n
1=1.5588470, dispersion v
1=29.91;
Described positive lens is the plastic material of E48R model, its refractive index n
2=1.531160, dispersion v
2=56.04.
On the other hand, the invention provides one and wear display device, what comprise technique scheme wears eyepiece system.
The beneficial effect of the embodiment of the present invention is: the invention discloses one and wear eyepiece system and wear display device, because the bending method line parallel of camber display screen is in the optical axis of positive lens, cause the out of focus be directly proportional to image planes height, this enforcement is undertaken moving corresponding to the shearing of positive lens by regulating negative lens, effectively can compensate time out of focus, thus carry out the camber display screen of adaptive different curvature by changing the relative height of incidence of light on negative lens surface.
Accompanying drawing explanation
The principle of work schematic diagram wearing display device that Fig. 1 provides for the embodiment of the present invention;
The list group goggle structure schematic diagram wearing eyepiece system that Fig. 2 provides for the embodiment of the present invention;
The eyepiece system of wearing that Fig. 3 provides for the invention process body adopts radius to be followed successively by the camber display screen of 100mm, 200mm, 400mm and the light path schematic diagram of flat-faced screen;
Fig. 4-a for employing radius that the embodiment of the present invention provides be the point range figure wearing eyepiece system of the camber display screen of 100mm;
Fig. 4-b for employing radius that the embodiment of the present invention provides be the point range figure wearing eyepiece system of the camber display screen of 200mm;
Fig. 4-c for employing radius that the embodiment of the present invention provides be the point range figure wearing eyepiece system of the camber display screen of 400mm;
The point range figure wearing eyepiece system of the employing flat-faced screen that Fig. 4-d provides for the embodiment of the present invention;
Fig. 5-a for employing radius that the embodiment of the present invention provides be the curvature of field curve wearing eyepiece system and the distortion aberration curve synoptic diagram of the camber display screen of 100mm;
Fig. 5-b for employing radius that the embodiment of the present invention provides be the curvature of field curve wearing eyepiece system and the distortion aberration curve synoptic diagram of the camber display screen of 200mm;
Fig. 5-c for employing radius that the embodiment of the present invention provides be the curvature of field curve wearing eyepiece system and the distortion aberration curve synoptic diagram of the camber display screen of 400mm;
The curvature of field curve wearing eyepiece system of the employing flat-faced screen that Fig. 5-d provides for the embodiment of the present invention and distortion aberration curve synoptic diagram.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
The principle of work schematic diagram wearing display device that Fig. 1 provides for the embodiment of the present invention, the light that camber display screen sends is through corresponding to the eyepiece system virtual image that 10m place formation one is huge before human eye of eyes, received by human eye again, thus give the sensation of shock.
Design this when wearing the optical system of display device, adopt reverse trace, make the camber display screen wearing display device be positioned at the image planes position of optical system, eye-observation pupil is positioned at diaphragm place, and the virtual image that system becomes is positioned at object plane position.
This optical system comprises camber display screen and two groups of eyepieces corresponding to right and left eyes, and often organize eyepiece and comprise a positive lens and a negative lens, wherein positive lens is near human eye, and negative lens is near camber display screen; Because the bending method line parallel of camber display screen is in the optical axis of positive lens, thus cause the out of focus be directly proportional to image planes height, therefore effectively can compensate time out of focus by the displacement of negative lens, carry out the camber display screen of adaptive different curvature.
Based on above-mentioned design philosophy, the invention provides one and wear eyepiece system, this is worn eyepiece system and comprises: camber display screen and the two groups of eyepieces being respectively used to left eye and right eye; Between light path diaphragm and camber display screen, along light direction, often organize eyepiece and set gradually a negative lens and a positive lens.
As shown in Figure 2, be the list group goggle structure schematic diagram wearing eyepiece system that the embodiment of the present invention provides, negative lens L1 is movable lens, for changing the relative height of incidence of light at negative lens L1, compensates the out of focus of camber display screen; Positive lens L2 is fixed lens;
Negative lens L1 moves as shear displacemant relative to positive lens L2, moving direction perpendicular to the optical axis of positive lens L2, the plane that the centre normal of optical axis and camber display screen that motion track is positioned at positive lens L2 is determined.
Technique scheme is carried out shear displacemant by negative lens and is moved, change the relative height of incidence of light at negative lens, compensate the out of focus of camber display screen, thus enable the optical system of this camber display screen produce the huge virtual image corresponding to flat-faced screen, the viewing immersed can be produced after being received by user feel, improve experience.
It should be noted that, for adaptive different curvature Curved screen, also can arrange positive lens L2 is movable lens, negative lens L1 is fixed lens, or negative lens L1 and positive lens L2 is movable lens, the effect of the camber display screen of adaptive different curvature is reached by mobile positive lens L2 or mobile negative lens L1 and positive lens L2, but because positive lens L2 is near human eye, be exposed to outside, if positive lens L2 to be set to the trouble that movable lens not only can cause interpupillary distance to change, nor be easy to do dust-proof process.Therefore, negative lens L1 is set to movable lens by the technical program, and positive lens L2 is set to fixed lens.
Wherein, the negative lens L1 in the present embodiment comprises successively along light direction: the first surface 21 for plane and the second surface 22 for concave surface;
Positive lens L2 comprises successively along light direction: be the 3rd surface 23 of convex surface and the 4th surface 24 for plane.
In the preferred embodiment of the present invention, the above-mentioned focal distance f wearing eyepiece system, the focal distance f of negative lens L1
1, the focal distance f of positive lens L2
2meet following relational expression:
The above-mentioned overall length L wearing eyepiece system, after system, burnt l meets following relational expression:
Wherein, the overall length wearing eyepiece system is that after system, Jiao is from the distance between the first surface 21 and camber display screen of negative lens L1 from the distance between the 4th surface 24 and camber display screen of positive lens L2.
The displacement vector d of negative lens L1, the subsequent corrosion R of camber display screen meets following relational expression:
In another preferred embodiment of the present invention, the second surface 22 of negative lens L1 and the 3rd surface 23 of positive lens L2 are aspheric surface; Negative lens L1 and positive lens L2 is plastic material.The technical program by adopting the positive and negative lens combination of aspheric surface plastics, can the miniaturization of bonding group eyepiece, lightweight, and can to reduce costs.
It should be noted that, the aspheric the highest item number of times on second surface 22 and the 3rd surface 23 is even number, can for being more than or equal to 2, and when the highest item is quadratic term, the aspheric surface quadratic term coefficient on second surface 22 and the 3rd surface 23 is respectively k
2, k
3, wherein-1 < k
2< 0 ,-20 < k
3<-1.
Further preferably, the ranges of indices of refraction of negative lens L1 is 1.45 < n
1< 1.75, dispersion range is 25 < v
1< 40; Concrete, negative lens L1 is the plastic material of POLYCARB model, its refractive index n
1=1.5588470, dispersion v
1=29.91;
The ranges of indices of refraction of positive lens L2 is 1.45 < n
2< 1.70, dispersion range is 50 < v
2< 75; Concrete, positive lens L2 is the plastic material of E48R model, its refractive index n
2=1.531160, dispersion v
2=56.04.
It should be noted that, the camber display screen of the present embodiment is also applicable to flexible display screen.
In technique scheme, this wears the maximum field of view angle that eyepiece system can reach 56 °, emergent pupil distance is 12-15mm, system axial is of a size of the technical indicator of 56.4mm, and this wears eyepiece system can be applicable to 5.5 cun of curved surface LED screens, and the radius of this curved surface LED screen can from 100mm to positive infinity.
The present embodiment wear two groups of eyepieces that eyepiece system comprises camber display screen and right and left eyes, between light path diaphragm and camber display screen, along light direction, often organize in eyepiece and set gradually a negative lens and a positive lens, although because the bending method line parallel of camber display screen is in the optical axis of positive lens, the out of focus be directly proportional to image planes height can be caused, but effectively can compensate time out of focus by the displacement of negative lens, therefore by regulating the camber display screen that this can be made to wear the adaptive different curvature of eyepiece system.
Another embodiment of the present invention is supplied to one and wears display device, and what this wore that display device comprises technique scheme wears eyepiece system.
Preferably, this head-mounted display apparatus for inserting Mobile phone type HMD, or carries the HMD of display screen.
Fig. 3-a ~ Fig. 3-d is that the eyepiece system of wearing that the invention process body provides adopts radius to be followed successively by the light path schematic diagram of 100mm, 200mm, 400mm camber display screen and flat-faced screen respectively, as can be seen from four width figure, when wearing eyepiece system and adopting camber display screen and the flat-faced screen of different radii, there is obvious difference the position of positive and negative lens piece.
Fig. 4-a ~ Fig. 4-d is adopt radius to be followed successively by point range figure that 100mm, 200mm, 400mm camber display screen and flat-faced screen wear eyepiece system respectively, 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 four width figure, different greyscale color represents the light of three kinds of wave bands respectively, 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, corresponding to the system of the different display screens of Fig. 4-a ~ Fig. 4-d imaging angle (OBJ image planes) 0.00 °, 10.00 °, 25.00 °,-10.00 °,-25.00 °, disc of confusion root mean square radii under-28.00 ° and 28.00 ° is followed successively by 15.860 μm, 36.542 μm, 107.731 μm, 36.542 μm, 107.731 μm, 125.699 μm, 125.699 μm (corresponding to Fig. 4-a wear eyepiece system), 20.254 μm, 44.487 μm, 77.606 μm, 33.724 μm, 100.991 μm, 119.736 μm, 82.037 μm (corresponding to Fig. 4-b wear eyepiece system), 31.439 μm, 53.034 μm, 48.874 μm, 38.381 μm, 105.997 μm, 124.033 μm, 42.017 μm (corresponding to Fig. 4-c wear eyepiece system), 56.943 μm, 66.994 μm, 120.839 μm, 57.706 μm, 132.317 μm, 151.147 μm, 140.929 μm (corresponding to Fig. 4-d wear eyepiece system), it can thus be appreciated that the aberration of native system obtains good correction.
Fig. 5-a ~ Fig. 5-d adopts radius to be followed successively by 100mm, 200mm, 400mm camber display screen and flat-faced screen wear curvature of field curve and the distortion aberration curve synoptic diagram of eyepiece system, in every width figure, left figure is curvature of field curve synoptic diagram, right figure is distortion aberration curve synoptic diagram, curvature of field curve synoptic diagram t line 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, difference crosses the image quality of the serious system that the has influence on off-axis ray of conference, as can be seen from four width figure in corresponding curvature of field curve synoptic diagram, the curvature of field of native system and astigmatism are all corrected in very low range, 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.
In sum, the invention discloses one wear eyepiece system and wear display device, because the bending method line parallel of camber display screen is in the optical axis of positive lens, cause the out of focus be directly proportional to image planes height, this enforcement is undertaken moving corresponding to the shearing of positive lens by regulating negative lens, effectively can compensate time out of focus, thus carry out the camber display screen of adaptive different curvature by changing the relative height of incidence of light on negative lens surface.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. wear an eyepiece system, it is characterized in that, described in wear eyepiece system and comprise: camber display screen and be respectively used to two groups of eyepieces of left eye and right eye; Between light path diaphragm and described camber display screen, along light direction, often organize eyepiece and set gradually a negative lens and a positive lens,
Described negative lens is movable lens, and described positive lens is fixed lens;
Described negative lens can relative to positive lens do shear mobile, moving direction perpendicular to the optical axis of positive lens, the plane that the centre normal of optical axis and camber display screen that motion track is positioned at positive lens is determined.
2. according to claim 1ly wear eyepiece system, it is characterized in that,
Described negative lens comprises successively along light direction: the first surface for plane and the second surface for concave surface;
Described positive lens comprises successively along light direction: the 3rd surface for convex surface and the 4th surface for plane.
3. according to claim 1ly wear eyepiece system, it is characterized in that, described in wear the focal distance f of eyepiece system, the focal distance f of described negative lens
1, the focal distance f of positive lens
2meet following relational expression:
4. according to claim 1ly wear eyepiece system, it is characterized in that, described in wear the overall length L of eyepiece system, after system, burnt l meets following relational expression:
5. according to claim 1ly wear eyepiece system, it is characterized in that, the displacement vector d of described negative lens, the subsequent corrosion R of described camber display screen meets following relational expression:
-6.8＜d＜6.8，
6. according to any one of claim 1-5, wear eyepiece system, it is characterized in that, the second surface of described negative lens and the 3rd surface of described positive lens are aspheric surface.
7. according to claim 6ly wear eyepiece system, it is characterized in that, the highest aspheric item on described second surface and the 3rd surface is quadratic term,
The aspheric surface quadratic term coefficient on described second surface and the 3rd surface is respectively k
2, k
3, wherein-1 < k
2< 0 ,-20 < k
3<-1.
8. according to claim 7ly wear eyepiece system, it is characterized in that, described negative lens and described positive lens are plastic material;
The ranges of indices of refraction of described negative lens is 1.45 < n
1< 1.75, dispersion range is 25 < v
1< 40;
The ranges of indices of refraction of described positive lens is 1.45 < n
2< 1.70, dispersion range is 50 < v
2< 75.
9. according to claim 8ly wear eyepiece system, it is characterized in that, described negative lens is the plastic material of POLYCARB model, its refractive index n
1=1.5588470, dispersion v
1=29.91;
Described positive lens is the plastic material of E48R model, its refractive index n
2=1.531160, dispersion v
2=56.04.
10. wear a display device, it is characterized in that, comprise and wear eyepiece system described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073382.5A CN104656245B (en) | 2015-02-11 | 2015-02-11 | One kind wears eyepiece system and wears display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073382.5A CN104656245B (en) | 2015-02-11 | 2015-02-11 | One kind wears eyepiece system and wears display device |
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| Publication Number | Publication Date |
|---|---|
| CN104656245A true CN104656245A (en) | 2015-05-27 |
| CN104656245B CN104656245B (en) | 2017-06-27 |
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ID=53247575
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|---|---|---|---|
| CN201510073382.5A Active CN104656245B (en) | 2015-02-11 | 2015-02-11 | One kind wears eyepiece system and wears display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324838A (en) * | 2016-09-30 | 2017-01-11 | 中国科学院长春光学精密机械与物理研究所 | Virtual reality equipment and virtual reality system |
| CN107430281A (en) * | 2015-06-23 | 2017-12-01 | 谷歌公司 | Head mounted display device with hyperboloid display |
| US10120194B2 (en) | 2016-01-22 | 2018-11-06 | Corning Incorporated | Wide field personal display |
| CN111699428A (en) * | 2019-06-26 | 2020-09-22 | 深圳市大疆创新科技有限公司 | Optical lens group, imaging system and wearable display device |
| FR3094098A1 (en) * | 2019-03-22 | 2020-09-25 | Valeo Comfort And Driving Assistance | Head-up display with curved screen |
| US10976551B2 (en) | 2017-08-30 | 2021-04-13 | Corning Incorporated | Wide field personal display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3094098A1 (en) * | 2019-03-22 | 2020-09-25 | Valeo Comfort And Driving Assistance | Head-up display with curved screen |
| CN111699428A (en) * | 2019-06-26 | 2020-09-22 | 深圳市大疆创新科技有限公司 | Optical lens group, imaging system and wearable display device |
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|---|---|
| CN104656245B (en) | 2017-06-27 |
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Effective date of registration: 20201010 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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