CN102868900B - Wide viewing angle and crosstalk-free integrated imaging three-dimensional display device - Google Patents

Wide viewing angle and crosstalk-free integrated imaging three-dimensional display device Download PDF

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Publication number
CN102868900B
CN102868900B CN201210379308.2A CN201210379308A CN102868900B CN 102868900 B CN102868900 B CN 102868900B CN 201210379308 A CN201210379308 A CN 201210379308A CN 102868900 B CN102868900 B CN 102868900B
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China
Prior art keywords
mask plate
black mask
display screen
refractive index
microlens array
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Expired - Fee Related
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CN201210379308.2A
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CN102868900A (en
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王琼华
罗成高
纪超超
邓欢
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Sichuan University
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Sichuan University
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Abstract

The invention provides a wide viewing angle and crosstalk-free integrated imaging three-dimensional display device which comprises a display screen, a medium having high index of refraction, a black mask plate and a micro lens array, wherein the display screen is positioned on a rear focal plane of the micro lens array and used for displaying micro image array, the medium having high index of refraction is filled on the surface of the display screen, the display screen is used for acquiring the largest first-person viewing angle, and the black mask plate is formed on the medium having high index of refraction so that three-dimensional reconstructed images in a sub visual area and image crosstalk and jump between different visual areas are eliminated. The display screen, medium having high index of refraction and the black mask plate are tightly attached one another. An image primitive, the black mask plate and a lens primitive are in one to one correspondence and the centers of the three and aligned.

Description

The integration imaging 3D display unit that a kind of wide visual angle and nothing are crosstalked
Technical field
The present invention relates to three-dimensional (3D) stereo display technique, more particularly, the present invention relates to integration imaging technology, the integration imaging 3D display unit that espespecially a kind of wide visual angle and nothing are crosstalked.
Background technology
Integration imaging is a kind of technology of utilizing microlens array to carry out recording and reconstruction 3D scene, and it comprises takes and two processes of demonstration.In shooting process, adopt the steric information of being obtained 3D scene by many lens cells microlens array that parallel arranged forms in the horizontal and vertical directions, and steric information is recorded on the image recorder that is positioned at microlens array focal plane and obtains image primitive, all image primitives parallel arranged in the horizontal and vertical directions, has formed micro-pattern matrix.When general employing is with shooting in procedure for displaying, there is the microlens array of identical parameters, micro-pattern matrix is presented at a distance after microlens array, according to light path principle of reversibility, the light-ray condensing reduction that microlens array transmits various image primitives, thereby reconstruct the full real stereo image of 3D scene near of microlens array, this stereo-picture comprises authentic color and continuous parallax information, beholder just can obtain the sensation of watching real scene without wearing auxiliary equipment, and there is no stereos copic viewing visual fatigue.
Although integration imaging has many advantages, be also far from reaching out of this world degree, because the resolution of current microlens array processing and fabricating difficulty and shooting and display device is limited etc., factor causes it also to have many weak points.Attachedly Figure 1 shows that conventional integration imaging 3D display unit vision area distribution schematic diagram, wherein, the public domain of the vision area that primary vision area forms with corresponding image primitive for each lens cells, firsts and seconds time vision area is respectively the public domain of the vision area that each lens cells and image primitive adjacent and separately form, and the region between vision areas at different levels is crosstalk zone.Conventional integration imaging 3D display unit watch vision area very narrow, watch visual angle very little, and have picture crosstalk and saltus step between time vision area not at the same level, these deficiencies are seriously restricting the performance of watching of integration imaging 3D display unit.Many researchers are respectively for watching visual angle and picture crosstalk problem to propose many solutions, but are all to carry out part improvement for certain Single-issue wherein, and can not be simultaneously to watching visual angle and picture crosstalk problem effectively to improve.
Summary of the invention
The present invention proposes the integration imaging 3D display unit that a kind of wide visual angle and nothing are crosstalked, as shown in Figure 2, it comprises display screen, high refractive index medium, black mask plate and microlens array.Display screen is placed on the back focal plane of microlens array, for showing micro-pattern matrix.Display screen upper surface is filled high refractive index medium, high refractive index medium upper surface is made black mask plate, between display screen, high refractive index medium and black mask plate three, be close to, and guarantee image primitive, black mask plate unit and lens cells three correspondence and center-aligned one by one.
When the light being sent by the image primitive on display screen passes through high refractive index medium outgoing, there is deviation in the direction of propagation, and pass through microlens array outgoing in the mode converging to corresponding lens cells center, thus make integration imaging 3D display unit obtain wide primary vision area, obtain the large main perspective of watching.Meanwhile, the black mask plate of making will stop from the light of crosstalking in adjacent and interphased images unit, thereby the 3D rendering in elimination time vision area and picture crosstalk and the saltus step between different vision area form the clear area that there is no 3D rendering.Between primary vision area and clear area, be blanking zone, in blanking zone, have the part image retention of 3D rendering.
Preferably, the integration imaging 3D display unit that a kind of wide visual angle of the present invention and nothing are crosstalked comprises following design procedure.
The first step, as shown in Figure 2, determines that the pitch of image primitive, black mask plate unit and lens cells is p, the focal length of microlens array is f, the refractive index of air is n 0, micro-pattern matrix, black mask plate and microlens array all comprise m× nindividual unit, wherein, in horizontal direction mindividual unit, in vertical direction nindividual unit.
Second step, in the upper surface filling refractive index of display screen is n, thickness is hhigh refractive index medium, make black mask plate at high refractive index medium upper surface, between display screen, high refractive index medium and black mask plate three, be close to, and guarantee image primitive and black mask plate unit corresponding and center-aligned one by one, wherein the transparent circle hole radius at the black mask plate unit center place corresponding with each image primitive is r, hwith rdesign meet formula (1), (2), (3) and (4) simultaneously,
The 3rd step, is placed on display screen on the back focal plane of microlens array, and guarantees image primitive, black mask plate unit and lens cells three correspondence and center-aligned one by one, thereby realizes wide visual angle and show without the integration imaging 3D crosstalking.
Accompanying drawing explanation
Accompanying drawing 1 is conventional integration imaging 3D display unit vision area distribution schematic diagram.
Accompanying drawing 2 is for wide visual angle of the present invention with without the integration imaging 3D display unit vision area distribution schematic diagram of crosstalking.
Accompanying drawing 3 takes at the primary vision area of example device of the present invention the 3D rendering obtaining for beholder.
Accompanying drawing 4 takes at the blanking zone of example device of the present invention the 3D rendering obtaining for beholder.
Accompanying drawing 5 takes in the clear area of example device of the present invention the 3D rendering obtaining for beholder.
Shown by reference numeral in above-mentioned accompanying drawing is:
1 display screen, 2 microlens arrays, 3 high refractive index mediums, 4 black mask plates.
Should be appreciated that above-mentioned accompanying drawing just schematically, not drafting in proportion.
Embodiment
Describe in detail below and utilize a kind of wide visual angle of the present invention and an exemplary embodiments without the integration imaging 3D display unit of crosstalking, the present invention is conducted further description.Be necessary to be pointed out that at this; following examples are only described further for the present invention; can not be interpreted as limiting the scope of the invention; this art skilled person makes some nonessential improvement and adjustment according to foregoing invention content to the present invention, still belongs to protection scope of the present invention.
The present invention proposes the integration imaging 3D display unit that a kind of wide visual angle and nothing are crosstalked, as shown in Figure 2, it comprises display screen, high refractive index medium, black mask plate and microlens array.Display screen is placed on the back focal plane of microlens array, for showing micro-pattern matrix.Display screen upper surface is filled high refractive index medium, high refractive index medium upper surface is made black mask plate, between display screen, high refractive index medium and black mask plate three, be close to, and guarantee image primitive, black mask plate unit and lens cells three correspondence and center-aligned one by one.When the light being sent by the image primitive on display screen passes through high refractive index medium outgoing, there is deviation in the direction of propagation, and pass through microlens array outgoing in the mode converging to corresponding lens cells center, thus make integration imaging 3D display unit obtain wide primary vision area, obtain the large main perspective of watching.Meanwhile, the black mask plate of making will stop from the light of crosstalking in adjacent and interphased images unit, thereby the 3D rendering in elimination time vision area and picture crosstalk and the saltus step between different vision area form the clear area that there is no 3D rendering.Between primary vision area and clear area, be blanking zone, in blanking zone, have the part image retention of 3D rendering.
A kind of wide visual angle of the present invention and the design procedure comprising without the integration imaging 3D display unit of crosstalking are as follows.
The first step, determines the pitch of image primitive, black mask plate unit and lens cells p=1.27mm, the focal length of microlens array f=5mm, the refractive index of air n 0=1, micro-pattern matrix, black mask plate and microlens array all comprise m× n=200 × 180 unit.
Second step, high refractive index medium is selected Thomas's high refractive index transparent epoxy resin (THO5020), its refractive index n=1.6, calculated the thickness of high refractive index medium by formula (1), (2), (3) and (4) h=4.01mm, the transparent circle hole radius at black mask plate unit center place r=0.18mm.When design, need make to be close between display screen, high refractive index medium and black mask plate three, and guarantee image primitive and black mask plate unit corresponding and center-aligned one by one.
The 3rd step, is placed on display screen on microlens array back focal plane, and guarantees image primitive, black mask plate unit and lens cells three correspondence and center-aligned one by one.
Take horizontal direction as example, at viewing distance l=1500mm place, the 3D that measures example device of the present invention watches main perspective to reach θ=10.9 °, and under equal Parameter Conditions, the 3D of conventional integration imaging 3D display unit watches main perspective to be only 4.7 °.Shown in accompanying drawing 3, accompanying drawing 4 and accompanying drawing 5, be respectively beholder and take in primary vision area, blanking zone and the clear area of example device of the present invention the 3D rendering obtaining, can find out, this example device only presents complete, 3D rendering clearly at primary vision area, blanking zone presents the part image retention of 3D rendering, and clear area does not have 3D rendering, eliminate in conventional integration imaging 3D display unit picture crosstalk and saltus step between 3D rendering and the different vision area of time vision area, realized wide visual angle and shown without the integration imaging 3D crosstalking.

Claims (1)

1. the integration imaging 3D display unit that wide visual angle and nothing are crosstalked, is characterized in that, this device comprises display screen, high refractive index medium, black mask plate and microlens array; The design procedure of this device is: the first step, determine that the pitch of image primitive, black mask plate unit and lens cells is p, the focal length of microlens array is f, the refractive index of air is n 0, micro-pattern matrix, black mask plate and microlens array all comprise m× nindividual unit, wherein, in horizontal direction mindividual unit, in vertical direction nindividual unit, second step, in the upper surface filling refractive index of display screen is n, thickness is hhigh refractive index medium, make black mask plate at high refractive index medium upper surface, between display screen, high refractive index medium and black mask plate three, be close to, and guarantee image primitive and black mask plate unit corresponding and center-aligned one by one, wherein the transparent circle hole radius at the black mask plate unit center place corresponding with each image primitive is r, hwith rdesign meet formula simultaneously , , with , the 3rd step, is placed on display screen on the back focal plane of microlens array, for showing micro-pattern matrix, and guarantees image primitive, black mask plate unit and lens cells three correspondence and center-aligned one by one.
CN201210379308.2A 2012-10-09 2012-10-09 Wide viewing angle and crosstalk-free integrated imaging three-dimensional display device Expired - Fee Related CN102868900B (en)

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CN103702099B (en) * 2013-12-17 2015-08-05 四川大学 A kind of super large visual angle integration imaging 3D display packing based on head-tracking
CN104834174B (en) * 2014-02-12 2018-02-27 台达电子工业股份有限公司 Stereoscopic display device is with applying its stereo display method
CN103869486B (en) * 2014-03-11 2017-01-18 深圳市华星光电技术有限公司 Integrated imaging three-dimensional (3D) display device and system
CN103986926B (en) * 2014-05-26 2015-11-11 四川大学 A kind of integration imaging 3D display unit without crosstalk
CN104104939B (en) * 2014-07-11 2017-02-08 西安电子科技大学 Wide viewing angle integrated imaging three-dimensional display system
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