CN105607269A - Large view angle integral imaging 3D display screen - Google Patents
Large view angle integral imaging 3D display screen Download PDFInfo
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- CN105607269A CN105607269A CN201510978567.0A CN201510978567A CN105607269A CN 105607269 A CN105607269 A CN 105607269A CN 201510978567 A CN201510978567 A CN 201510978567A CN 105607269 A CN105607269 A CN 105607269A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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- Optics & Photonics (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention relates to a large view angle integral imaging 3D display screen. The integral imaging 3D display screen is formed by a 2D display screen, a micro convex lens array and a micro concave lens array, wherein the distance between the micro convex lens array and the micro concave lens array is zero, and the right curvature radius of a lens element of the micro convex lens array is equal to the left curvature radius of a lens element of the micro concave lens array. The 2D display screen is arranged on a rear focal plane of the micro convex lens array to display a micro image array, the number of the lens elements in the micro convex lens array and the micro concave lens array is equal to the number of the image element in the micro image array, the light ray emitted by the image element on the 2D display screen forms an amplified virtual micro image array in front of the micro concave lens array through the refraction of the micro convex lens array and the micro concave lens array, and a large view angle 3D image is reproduced through the convergence and reduction of the light ray.
Description
Technical field
The present invention relates to integration imaging technology, particularly a kind of integration imaging 3D display screen with great visual angle.
Background technology
Integration imaging comprises that 3D takes and 3D shows two processes. 3D takes complete by microlens array and CCD image deviceBecome. In 3D shooting process, due to be taken scene by each lens cells of microlens array can generate one independently as,Each lens cells is recorded a part of information of 3D scene from different directions, on the back focal plane of each lens cells, can give birth toBecome a small image, be referred to as image primitive, therefore on the back focal plane of microlens array, will form one and record 3D fieldMicro-pattern matrix of scape different angles information. It is to be completed by microlens array and 2D display screen that 3D shows. In 3D procedure for displaying,The 2D display screen that shows image primitive is placed on the back focal plane of lens cells, and according to light path principle of reversibility, microlens array is instituteThe light that has the image primitive of answering in contrast to send is assembled reduction, will reconstruct and record in the front of microlens arrayTime identical 3D rendering.
It is the important performance characteristic that integration imaging 3D shows that 3D watches visual angle, it refer to can see without saltus step, without crosstalking, completeThe viewing angle of whole 3D rendering. 3D watches visual angle larger, and the free degree of watching is larger. , conventional integration imaging 3D displayThe 3D of primary vision area watches visual angle very narrow, only has the several years to tens degree, and has larger crosstalk zone between each order vision area,This is a key factor of restriction integration imaging development.
As shown in Figure 1, conventional integration imaging 3D display screen is made up of 2D display screen and microlens array, and its 3D watchesVisual angle is:
（1）
Wherein, be the pitch of lens cells in microlens array, for microlens array is to the distance of 2D display screen.
Summary of the invention
The present invention proposes a kind of integration imaging 3D display screen with great visual angle. Shown in accompanying drawing 2, this integration imaging 3D display screen by2D display screen, dimpling lens arra and nick lens arra composition, the distance between dimpling lens arra and nick lens arraBe zero, and in dimpling lens arra, the right radius of curvature of lens cells equal the left radius of curvature of lens cells in nick lens arra.On the back focal plane of 2D display screen in dimpling lens arra for showing micro-pattern matrix, dimpling lens arra, nick lensIn array, the number of lens cells is identical with the number of image primitive in micro-pattern matrix, the light warp that 2D image on display screen unit sendsCross dimpling lens arra and the refraction of nick lens arra, form the virtual micro-pattern matrix amplifying in nick lens arra front,Through the convergence reduction of light, one of reproducing 3D rendering with great visual angle.
In the pitch of 2D image on display screen unit, dimpling lens arra in the pitch and nick lens arra of lens cellsThe pitch of lens cells all equates, is all W, and each image primitive and corresponding convex lens unit thereof and concavees lens first one a pair ofShould. The left radius of curvature r of lens cells in nick lens arra3With right radius of curvature r4Need satisfy condition:
（2）
Accompanying drawing 3 is watched visual angle schematic diagram for the 3D of 3D display screen that the present invention proposes. d1And d2Be respectively dimpling lens arra andThe thickness of nick lens arra, w1For the convex lens left sphere of unit summit is to the distance of object space principal plane, w2For the right sphere of convex lens unitSummit is to the distance of image space principal plane, w3For the concavees lens left sphere of unit summit is to the distance of object space principal plane, f1For convex lens unitFocal length, they meet relation:
（3）
As shown in Figure 3, the 3D of integration imaging 3D display screen proposed by the invention watches visual angle to be:
（4）
Wherein β is the magnifying power of dimpling lens arra and the relative micro-pattern matrix of nick lens arra, and is determined by following formula:
（5）
Wherein l1For the object distance of convex lens unit, l2' be the image distance of concavees lens unit, f2For the focal length of concavees lens unit.
In the time that the concavees lens unit in nick lens arra meets formula (2) and (3), can obtain, exist obviously, i.e. the 3D of integration imaging 3D display screen that the present invention proposes watches visual angle than conventional integration imaging 3D display screen3D watches visual angle large.
Brief description of the drawings
The 3D that accompanying drawing 1 is conventional integration imaging 3D display screen watches visual angle schematic diagram
A kind of integration imaging 3D display screen schematic diagram with great visual angle that accompanying drawing 2 proposes for the present invention
Accompanying drawing 3 is watched visual angle schematic diagram for a kind of 3D of integration imaging 3D display screen with great visual angle that the present invention proposes
Shown by reference numeral in above-mentioned accompanying drawing is:
1.2D display screen, 2. dimpling lens arra, 3. nick lens arra, 4. convex lens unit, 5. concavees lens unit
Should be appreciated that above-mentioned accompanying drawing just schematically, not drafting in proportion.
Detailed description of the invention
Describe an exemplary embodiments of a kind of integration imaging 3D display screen with great visual angle of the present invention below in detail, to thisInvention is further described specifically. Be necessary to be pointed out that at this, following examples are only done further for the present inventionIllustrate, can not be interpreted as limiting the scope of the invention, this art skilled person is according to the invention described above content pairThe present invention makes some nonessential improvement and adjustment, still belongs to protection scope of the present invention.
The present invention proposes a kind of integration imaging 3D display screen with great visual angle, shown in accompanying drawing 3. This integration imaging 3D display screen by2D display screen, dimpling lens arra and nick lens arra composition, pattern matrix is directly projected to dimpling lens by 2D display screenOn the back focal plane of array, dimpling lens arra, nick lens arra are identical with the number of the image primitive that micro-pattern matrix comprises, allFor, the radius of curvature of nick lens arra concave lens cells meets formula (2), and the left song of convex lens unitThe right radius of curvature of rate radius and concavees lens unit equates, thickness need meet formula (3), the pitch of 2D image on display screen unit, micro-The pitch three of the pitch of convex lens array lens unit and nick lens arra lens cells equates, is all W, and each image primitiveCorresponding convex lens unit and the three of concavees lens unit are corresponding one by one. Dimpling lens arra and nick lens arra are thrown 2D display screenThe light of shadow is dispersed, and forms the virtual image array amplifying on the empty focal plane of nick lens arra, and then light entersLine convergence reproducing 3D rendering.
Distance between dimpling lens arra and nick lens arra is zero, and the right song of lens cells in dimpling lens arraRate radius r2Left radius of curvature r with nick lens arra concave lens cells3Equate. The pitch W=1mm of dimpling lens arra is thickDegree d1=0.6mm, refractive index n1=1.586，r1=3.742mm，r2=-3.742mm. The pitch W=1mm of nick lens arra, r3=-3.742mm，r4=0.6mm, refractive index n2=1.50, thickness is d2. In the time of focusing mode, image primitive array and dimpling lens arraBetween distance be g=3.2mm, d2=1.1mm, can show that conventional integration imaging 3D display screen watches visual angle at the 3D of focusing modeΩ=10.83 °, by formula (4) draw integration imaging 3D display screen of the present invention the 3D of focusing mode watch visual angle Ω '=28.67 °. In the time of real pattern, g=4mm, d2=1.1mm, can show that conventional integration imaging 3D display screen watches and looking at the 3D of real patternΩ=10.85 °, angle, by formula (4) draw integration imaging 3D display screen of the present invention the 3D of real pattern watch visual angle Ω '=22.79 °. In the time of empty pattern, g=2mm, d2=1.1mm, can show that conventional integration imaging 3D display screen watches and looking at the 3D of empty patternΩ=20.03 °, angle, by formula (5) draw integration imaging 3D display screen of the present invention the 3D of empty pattern watch angle Ω '=36.47 °. In sum, in the time of focusing mode, real pattern, empty pattern, can be drawn by data above: the integrated one-tenth of the present inventionThe 3D that watches visual angle to be greater than conventional integration imaging 3D display screen as the 3D of 3D display screen watches visual angle.
Described dimpling lens arra and nick lens arra carry out scattering to the light of 2D display screen, at nick lens arraImage space focal length on form the virtual image array of an amplification, virtual image array is through the convergence reduction of light, reproducingA 3D rendering with great visual angle.
Claims (4)
1. an integration imaging 3D display screen with great visual angle, is characterized in that, this integration imaging 3D display screen is by 2D display screen, micro-Convex lens array and nick lens arra composition, the distance between dimpling lens arra and nick lens arra is zero, and dimplingIn lens arra, the right radius of curvature of lens cells equals the left radius of curvature of lens cells in nick lens arra, 2D display screen inOn the back focal plane of dimpling lens arra for showing micro-pattern matrix, lens cells in dimpling lens arra, nick lens arraNumber identical with the number of image primitive in micro-pattern matrix, light that 2D image on display screen unit sends is through dimpling lens arrayRow and the refraction of nick lens arra, form the virtual micro-pattern matrix amplifying, through the meeting of light in nick lens arra frontPoly-reduction, one of reproducing 3D rendering with great visual angle.
2. a kind of integration imaging 3D display screen with great visual angle according to claim 1, is characterized in that, convex lens unit is with recessedThe pitch of lens cells is all W, the right radius of curvature r of convex lens unit2With the left radius of curvature r of concavees lens unit3Equate nick lens arraThe left radius of curvature r of concave lens cells3With right radius of curvature r4Need satisfy condition, and the left song of convex lens unitThe right radius of curvature of rate radius and concavees lens unit equates.
3. a kind of integration imaging 3D display screen with great visual angle according to claim 1, is characterized in that nick lens arraNeed to meet, wherein, d1And d2Be respectively dimpling lens arra andThe thickness of nick lens arra, w1For the convex lens left sphere of unit summit is to the distance of object space principal plane, w2For the right sphere of convex lens unitSummit is to the distance of image space principal plane, w3For the concavees lens left sphere of unit summit is to the distance of object space principal plane, f1For convex lens unitFocal length.
4. a kind of integration imaging 3D display screen with great visual angle according to claim 1, is characterized in that, proposed by the inventionThe 3D of integration imaging 3D display screen watches visual angle to be, wherein, W is lens cells in dimpling lens arraPitch, g is the distance of dimpling lens arra to 2D display screen, β is dimpling lens arra micro-image relative to nick lens arraThe magnifying power of array,, wherein l1For the object distance of convex lens unit, l2' be the image distance of concavees lens unit,f2For the focal length of concavees lens unit.
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| CN201510978567.0A CN105607269A (en) | 2015-12-24 | 2015-12-24 | Large view angle integral imaging 3D display screen |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107577057A (en) * | 2017-09-06 | 2018-01-12 | 中国科学院上海光学精密机械研究所 | Three-dimensional face based on microlens array shows identity card and preparation method thereof |
| CN108061972A (en) * | 2016-11-07 | 2018-05-22 | 北京邮电大学 | A kind of curved surface light field display system |
| JP2019101115A (en) * | 2017-11-29 | 2019-06-24 | 日本放送協会 | Stereoscopic image display device |
| CN110083042A (en) * | 2019-05-07 | 2019-08-02 | 北京航空航天大学 | A kind of large scale holography display methods based on the effective use of two spaces optical modulator |
| CN111752003A (en) * | 2020-07-29 | 2020-10-09 | 中国人民解放军陆军装甲兵学院 | Integrated imaging three-dimensional display system |
| CN111781739A (en) * | 2020-06-23 | 2020-10-16 | 江南大学 | Large-depth-of-field variable-viewing-angle three-dimensional display module and augmented reality glasses thereof |
| CN111948892A (en) * | 2020-09-02 | 2020-11-17 | 中国人民解放军陆军装甲兵学院 | Integrated imaging display system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061972A (en) * | 2016-11-07 | 2018-05-22 | 北京邮电大学 | A kind of curved surface light field display system |
| CN107577057A (en) * | 2017-09-06 | 2018-01-12 | 中国科学院上海光学精密机械研究所 | Three-dimensional face based on microlens array shows identity card and preparation method thereof |
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| CN111948892A (en) * | 2020-09-02 | 2020-11-17 | 中国人民解放军陆军装甲兵学院 | Integrated imaging display system |
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Application publication date: 20160525 |