CN203930099U - A kind of lens and the camera lens and the head mounted display that comprise these lens - Google Patents
A kind of lens and the camera lens and the head mounted display that comprise these lens Download PDFInfo
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- CN203930099U CN203930099U CN201320861135.8U CN201320861135U CN203930099U CN 203930099 U CN203930099 U CN 203930099U CN 201320861135 U CN201320861135 U CN 201320861135U CN 203930099 U CN203930099 U CN 203930099U
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Abstract
The camera lens and the head mounted display that the utility model discloses a kind of lens and comprise these lens.Described lens are applicable to the camera lens of head mounted display, and two minute surfaces of described lens are respectively the aspherical mirror of evagination.Described camera lens consists of single element lens, and two minute surfaces of described lens are respectively the aspherical mirror of evagination.This head mounted display comprises camera lens and display, and described camera lens and described display are positioned at same optical axis, and described camera lens consists of single element lens, and two minute surfaces of described lens are respectively the aspherical mirror of evagination.The utility model has solved, the historic technical barrier that existing camera lens and head mounted display cost are high and portability is poor.
Description
Technical field
The utility model relates to optical lens field, relates in particular to a kind of camera lens and head mounted display that has the lens of two aspherical mirrors and comprise these lens.
Background technology
Along with the progress of science and technology industry, audio-visual devices is progressively to the future development of simulation of real scenes.Head-mounted display, as emerging technology, has first had good development prospect in entertainment field, and this technology, by the picture of two dimensional surface, with more three-dimensional image, is presented to the wearer of head-mounted display, to more pressing close to the sense of reality on the spot in person.And after show business, head-mounted display will, with a kind of novel photoelectric display system, be applied in many-sides such as industry, military affairs, literature and art widely.
At present, the type of head-mounted display is more, but mostly by camera lens and display, formed, its schematic diagram is referring to Fig. 1, the image of display 200 emits beam, and light comes together in via camera lens 100 in wearer's eye, wearer receive after light imaging 300(as 300 referring to Fig. 3), become image by the intersection point place of the reverse extending line of image light, be positioned at the rear position of display 200.For realizing said process, described camera lens 100 at least needs to have the function of controlling main optical angle and controlling field angle, and current lens are all spherical lenses, single spherical lens cannot realize above-mentioned functions simultaneously, for this reason, existing camera lens 100 consists of at least two lens 110, under described at least two lens 110 mating reactions, realizes camera lens 100 for the Functional Requirement of controlling main optical angle and control field angle.
The camera lens that existing at least two lens form, makes holding at high price of lens and head mounted display, has also caused its volume further to compress, portable poor.And price is high and portable poor, become already the development bottleneck of head mounted display, be that this technical field is thirsted for solving always, but insoluble historical technical barrier.
Based on this, the utility model provides a kind of lens with two aspherical mirrors, and the camera lens and the head mounted display that comprise these lens, in order to solve the historic technical barrier that above-mentioned price is high and portability is poor.
Utility model content
An object of the present utility model is to provide a kind of lens, for realizing, is met the Functional Requirement of head mounted display camera lens by single element lens.
Another object of the present utility model is to provide a kind of camera lens, and this camera lens consists of single element lens, to realize, is meeting on the basis of lens function requirement, reduces camera lens price, compression camera lens volume, improves camera lens portability.
Another object of the present utility model is to provide a kind of head mounted display, the camera lens of this head mounted display consists of single element lens, to realize, on the basis of Functional Requirement that meets head mounted display, reduce the price of head mounted display, the volume of compressing head head mounted displays, improve the portability of head mounted display.
Based on above-mentioned the first object, the utility model provides a kind of lens, and described lens are applicable to the camera lens of head mounted display, and two minute surfaces of described lens are respectively the aspherical mirror of evagination.
Preferably, the radius-of-curvature absolute value of aspherical mirror described in one of them, is less than the radius-of-curvature absolute value of aspherical mirror described in another.
Preferably, the shape of two described aspherical mirrors meets respectively following formula,
Wherein:
Z, for along optical axis direction in Y position with the surface fixed point shift value apart from optical axis for referencial use;
C is radius-of-curvature;
Y is the square value of described lens height;
K is circular cone coefficient;
A, b, m, d, e, f, g, h, be respectively every inferior asphericity coefficient.
Based on above-mentioned the second object, the utility model provides a kind of camera lens, and described camera lens is applicable to head mounted display, and described camera lens consists of single element lens, and two minute surfaces of described lens are respectively the aspherical mirror of evagination.
Preferably, the radius-of-curvature absolute value of aspherical mirror described in one of them of described lens, is less than the radius-of-curvature absolute value of aspherical mirror described in another of described lens.
Preferably, the shape of two described aspherical mirrors of described lens meets respectively following formula,
Wherein:
Z, for along optical axis direction in Y position with the surface fixed point shift value apart from optical axis for referencial use;
C is radius-of-curvature;
Y is the square value of described lens height;
K is circular cone coefficient;
A, b, m, d, e, f, g, h, be respectively every inferior asphericity coefficient.
Based on above-mentioned the 3rd object, the utility model provides a kind of head mounted display, and this head mounted display comprises camera lens and display, and described camera lens and described display are positioned at same optical axis, described camera lens consists of single element lens, and two minute surfaces of described lens are respectively the aspherical mirror of evagination.
Preferably, in two aspherical mirrors of described lens, radius-of-curvature absolute value towards the described aspherical mirror of described display, be less than the radius-of-curvature absolute value of aspherical mirror described in another, wherein, described aspherical mirror towards described display is used for controlling main optical angle, and described in another, aspherical mirror is used for controlling field angle.
Preferably, the shape of two described aspherical mirrors of described lens meets respectively following formula,
Wherein:
Z, for along optical axis direction in Y position with the surface fixed point shift value apart from optical axis for referencial use;
C is radius-of-curvature;
Y is the square value of described lens height;
K is circular cone coefficient;
A, b, m, d, e, f, g, h, be respectively every inferior asphericity coefficient.
Preferably, human eye is with respect to the light shaft offset amount of described camera lens, and its effective range is 1mm to-9mm.
In sum, the lens that the utility model provides, the aspherical mirror with two evaginations, one of them aspherical mirror is used for controlling main optical angle, another aspherical mirror is used for controlling field angle, accordingly, make these lens meet the Functional Requirement of the camera lens of head mounted display, further make, the camera lens of head mounted display can only adopt a slice lens to form, the cost of camera lens and the volume that can further compress camera lens have significantly been reduced, and then, the lens that provide by the utility model, solved the historic technical barrier that head mounted display price is high and portability is poor.
The camera lens that the utility model provides, employing single element lens forms, these lens have the aspherical mirror of two evaginations, can meet camera lens for the control requirement of main optical angle and field angle, and on this basis, the camera lens that single element lens forms, has significantly reduced the production cost of camera lens, and significantly compressed the volume of camera lens, improved its portability.
The head mounted display that the utility model provides, its camera lens adopts single element lens to form, these lens have the aspherical mirror of two evaginations, can meet camera lens for the control requirement of main optical angle and field angle, and on this basis, adopt the head mounted display of the camera lens of single element lens, significantly reduced the production cost of head mounted display, and significantly compressed the volume of head mounted display, improved its portability.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of existing head mounted display;
Fig. 2 is the structure principle chart of the utility model lens embodiment;
Fig. 3 is the optical schematic diagram of the utility model head mounted display embodiment;
Fig. 4 is the structure principle chart of the utility model head mounted display embodiment;
Fig. 5 is the curvature of field figure of the utility model head mounted display embodiment;
Fig. 6 is the distortion figure of the utility model head mounted display embodiment;
Fig. 7 is the point range figure (not departing from optical axis) of the utility model head mounted display embodiment;
Fig. 8 be the utility model head mounted display embodiment depart from optical axis 1mm time optical structure chart;
Fig. 9 be the utility model head mounted display embodiment depart from optical axis 1mm time point range figure;
Figure 10 be the utility model head mounted display embodiment depart from optical axis-9mm time optical structure chart;
Figure 11 be the utility model head mounted display embodiment depart from optical axis-9mm time point range figure.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Lens embodiment
Referring to Fig. 2, this embodiment discloses a kind of lens 110, described lens 110 are applicable to the camera lens of head mounted display, two minute surfaces of described lens 110 are respectively the aspherical mirror of evagination, for ease of describing, as shown in FIG., two aspherical mirrors are respectively the first aspherical mirror 111 and the second aspherical mirror 112.
Described lens 110 are when forming the camera lens of head mounted display: described the first aspherical mirror 111 is towards human eye, be used for adjusting field angle, by described the first aspherical mirror 111, substitute in existing camera lens, be mainly used in controlling the independent lens of field angle; Described the second aspherical mirror 112, towards display, substitutes in existing camera lens by described the second aspherical mirror 112, is mainly used in controlling the independent lens of main optical angle.Based on this, described lens 110 of the present utility model, it uses as camera lens separately, is also that camera lens consists of lens described in monolithic 110, can complete camera lens for the demand for control of field angle and main optical angle.
In this embodiment, institute is preferred, the Functional Requirement of controlling for field angle and main optical angle for realizing camera lens that lens 110 described in monolithic meet head mounted display, the radius-of-curvature absolute value of described lens 110 aspherical mirror described in one of them, is less than the radius-of-curvature absolute value of aspherical mirror described in another.Referring to Fig. 2, the radius-of-curvature of described the first aspherical mirror is R1, R1>0, and the radius-of-curvature of described the second aspherical mirror is R2, R2<0 :-R2<R1.
In this embodiment, in the preferred another scheme of institute, the shape of two described aspherical mirrors meets respectively following formula,
In this formula:
Z, for along optical axis direction in Y position with the surface fixed point shift value apart from optical axis for referencial use;
C is radius-of-curvature;
Y is the square value of described lens height;
K, is circular cone coefficient (Coin Constant);
A, b, m, d, e, f, g, h, be respectively every inferior asphericity coefficient (the orderAspherical Coeffcient).
Different head mounted displays has different requirements for the functional parameter of camera lens, in design, add man-hour, the asphericity coefficient providing according to deviser, and thick, the parameter such as limit is thick, external diameter wherein, can determine the shape of two described aspherical mirrors of these lens accurately.
Camera lens embodiment
This fact Example provides a kind of camera lens 100, and described camera lens 100 is applicable to head mounted display, is different from the twin-lens camera lens shown in Fig. 1, and the camera lens 100 of this embodiment consists of single element lens.
The camera lens of this embodiment consists of single element lens, and its structure is identical with Fig. 2, for this reason, does not additionally provide camera lens accompanying drawing in accompanying drawing, and for this camera lens, embodiment describes in conjunction with Fig. 2 and Fig. 3.
Particularly, in this embodiment, described camera lens 100 consists of single element lens 110, and described lens 110 are identical with the described lens 110 in aforesaid lens embodiment, are no longer repeated in this description.
Referring to Fig. 3, described the first aspherical mirror 111 is towards human eye, for controlling field angle; Described the second aspherical mirror 112 is towards display 200, for controlling main optical angle.Based on this, described in this camera lens employing monolithic, lens 110 form, can realize the Functional Requirement of controlling field angle and main optical angle etc., and than the existing camera lens consisting of at least two lens, the cost of camera lens 100 of the present utility model is lower, volume is less.
Head mounted display embodiment
Referring to Fig. 3-Figure 11, this embodiment discloses a kind of head mounted display.
Referring to Fig. 3-Fig. 4, the optical schematic diagram that Fig. 3 is this head mounted display, the principle assumption diagram that Fig. 4 is this head mounted display, particularly, this display comprises camera lens 100 and display 200, described camera lens 100 and described display 200 are positioned at same optical axis 400.
Described display 200 is prior art, at this, is not described in detail.
Described camera lens 100 consists of single element lens 110, and described the first aspherical mirror 111 is towards human eye, and described the second aspherical mirror 112 is towards display 200.First the light of described display 200 see through described the second aspherical mirror 112, through described the second aspherical mirror 112, carry out the adjustment of main optical angle, then inject described lens 110 and by described the first aspherical mirror 111, penetrate and enter human eye again, people's an eye line is first through described the first aspherical mirror 111,111 pairs of field angle of described the first aspherical mirror are adjusted, then through the imaging 300 after described lens 110, be positioned at the rear of described display 200.
Described lens 110 are identical with the described lens 110 in aforesaid lens embodiment, that is, described lens 110 meet:
1, two of described lens 110 minute surfaces are respectively the aspherical mirror of evagination, i.e. the first aspherical mirror 111 and the second aspherical mirror 112;
2, the absolute value of the radius of curvature R 1 of described the first spherical mirror surface 111, is greater than the absolute value of the radius of curvature R 2 of described the second aspherical mirror 112;
3, two described aspherical mirrors meet respectively following formula,
In this formula,
Z, for along optical axis direction in Y position with the surface fixed point shift value apart from optical axis for referencial use;
C is radius-of-curvature;
Y is the square value of described lens height;
K, is circular cone coefficient (Coin Constant);
A, b, m, d, e, f, g, h, be respectively every inferior asphericity coefficient (the orderAspherical Coeffcient).
Following table one, for the special parameter requirement of a certain model head mounted display for camera lens 100, also be, the lens 110 of this camera lens 100, for radius-of-curvature (C), height square value (Y), circular cone coefficient (K) and every inferior asphericity coefficient (a, b, m, d, e, f, g, h) parameter value, adopt respectively following data, and on this basis, in conjunction with two reverse evaginations of described aspherical mirror and-shape need of R2<R1, can determine accurately the shape of two described aspherical mirrors of these lens.
Table one
| S1 | S2 | |
| C | 49.940629 | -41.557464 |
| D | 20.006537 | 35.599516 |
| K | 0.005802 | -10.289093 |
| a | 0 | 0 |
| b | 0.000004 | -0.000002 |
| m | -0.0000000457952 | -0.0000000430983 |
| d | 0.00000000005206215 | 0.00000000012956540 |
| e | 0.0000000000002792704 | -0.0000000000001634510 |
| f | -0.0000000000000009616800 | 0.0000000000000001188698 |
| e | 0.000000000000000001071181 | -0.000000000000000000112991 |
| h | -0.00000000000000000000040693200 | 0.00000000000000000000006628754 |
Head mounted display for this model, through test, figure is referring to Fig. 5 for its curvature of field, figure is referring to Fig. 6 in its distortion, and its point range figure, referring to Fig. 7, is analyzed for r line (wavelength 435.8), d line (wavelength 587.6), c line (wavelength 656.3) respectively in figure, known by the analysis result shown in figure, the curvature of field of the head mounted display of this model is in 10%, and distortion is in 20%, and RMS point is less than 0.4mm.Therefore, the head mounted display of this model, the camera lens consisting of single element lens 110 100 adopting, meets the parameters index of head mounted display completely.And on this basis, make the cost of described head mounted display lower, volume further compresses, and has better portability.
Referring to Fig. 8-Figure 11, head mounted display of the present utility model, adopts the camera lens 100 consisting of single element lens 110, meets head mounted display completely for the requirement with certain light shaft offset amount.Wherein:
Optical schematic diagram when Fig. 8 shows light shaft offset 1mm, answers in contrast, when Fig. 9 shows light shaft offset 1mm, and the point range figure that institute's test analysis goes out.
Optical schematic diagram when Figure 10 shows light shaft offset-9mm, is offset 9mm with direction contrary shown in Fig. 8, answers in contrast, and when Figure 11 shows light shaft offset-9mm, the point range figure that institute's test analysis goes out.
From the result of analyzing shown in figure, depart from optical axis 1mm and-during 9mm, the RMS point of this model head mounted display (being the root mean square of the radius of disc of confusion) is less than 0.45mm, meets the quality requirements of head mounted display.Separately, human eye interpupillary distance is generally about 4mm, and therefore, the effective range value 1mm of light shaft offset amount, to-9mm, enough tackles user's use habit.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit protection domain of the present utility model.All any modifications of doing, be equal to replacement, improvement etc. within spirit of the present utility model and principle, be all included in protection domain of the present utility model.
Claims (7)
1. lens, described lens are applicable to the camera lens of head mounted display, it is characterized in that, two minute surfaces of described lens are respectively the aspherical mirror of evagination, the radius-of-curvature absolute value of aspherical mirror described in one of them, is less than the radius-of-curvature absolute value of aspherical mirror described in another.
2. lens according to claim 1, is characterized in that, the shape of two described aspherical mirrors meets respectively following formula,
Wherein:
Z, for along optical axis direction in Y position with the surface fixed point shift value apart from optical axis for referencial use;
C is radius-of-curvature;
Y is the square value of described lens height;
K is circular cone coefficient;
A, b, m, d, e, f, g, h, be respectively every inferior asphericity coefficient.
3. a camera lens, described camera lens is applicable to head mounted display, it is characterized in that, described camera lens consists of single element lens, two minute surfaces of described lens are respectively the aspherical mirror of evagination, the radius-of-curvature absolute value of aspherical mirror described in one of them of described lens, is less than the radius-of-curvature absolute value of aspherical mirror described in another of described lens.
4. camera lens according to claim 3, is characterized in that, the shape of two described aspherical mirrors of described lens meets respectively following formula,
Wherein:
Z, for along optical axis direction in Y position with the surface fixed point shift value apart from optical axis for referencial use;
C is radius-of-curvature;
Y is the square value of described lens height;
K is circular cone coefficient;
A, b, m, d, e, f, g, h, be respectively every inferior asphericity coefficient.
5. a head mounted display, this head mounted display comprises camera lens and display, and described camera lens and described display are positioned at same optical axis, it is characterized in that, and described camera lens consists of single element lens, and two minute surfaces of described lens are respectively the aspherical mirror of evagination; In two aspherical mirrors of described lens, radius-of-curvature absolute value towards the described aspherical mirror of described display, be less than the radius-of-curvature absolute value of aspherical mirror described in another, wherein, described aspherical mirror towards described display is used for controlling main optical angle, and described in another, aspherical mirror is used for controlling field angle.
6. head mounted display according to claim 5, is characterized in that, the shape of two described aspherical mirrors of described lens meets respectively following formula,
Wherein:
Z, for along optical axis direction in Y position with the surface fixed point shift value apart from optical axis for referencial use;
C is radius-of-curvature;
Y is the square value of described lens height;
K is circular cone coefficient;
A, b, m, d, e, f, g, h, be respectively every inferior asphericity coefficient.
7. head mounted display according to claim 6, is characterized in that, human eye is with respect to the light shaft offset amount of described camera lens, and its effective range is 1mm to-9mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760628A (en) * | 2013-12-24 | 2014-04-30 | 青岛歌尔声学科技有限公司 | Lens, camera lens with lens and head-wearing displayer |
| CN106842558A (en) * | 2015-12-03 | 2017-06-13 | 北京航宇荣康科技股份有限公司 | Virtual reality curved surface Fresnel optical plastic Single-lens Optical system |
-
2013
- 2013-12-24 CN CN201320861135.8U patent/CN203930099U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760628A (en) * | 2013-12-24 | 2014-04-30 | 青岛歌尔声学科技有限公司 | Lens, camera lens with lens and head-wearing displayer |
| CN106842558A (en) * | 2015-12-03 | 2017-06-13 | 北京航宇荣康科技股份有限公司 | Virtual reality curved surface Fresnel optical plastic Single-lens Optical system |
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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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Granted publication date: 20141105 |