CN102520558A - Blue-phase-liquid-crystal-microlens-array-based integrated imaging display device - Google Patents
Blue-phase-liquid-crystal-microlens-array-based integrated imaging display device Download PDFInfo
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- CN102520558A CN102520558A CN2012100032075A CN201210003207A CN102520558A CN 102520558 A CN102520558 A CN 102520558A CN 2012100032075 A CN2012100032075 A CN 2012100032075A CN 201210003207 A CN201210003207 A CN 201210003207A CN 102520558 A CN102520558 A CN 102520558A
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Abstract
The invention provides a blue-phase-liquid-crystal-microlens-array-based integrated imaging display device. The blue-phase-liquid-crystal-microlens-array-based integrated imaging display device comprises image display equipment and a blue-phase liquid crystal microlens array, wherein the image display equipment is used for displaying a 2D (Two-Dimensional) image or a micro-image array and is placed at a position a certain distance behind the blue-phase liquid crystal microlens array, and the centers of the image display equipment and the blue-phase liquid crystal microlens array are aligned. When an appropriate drive voltage V0 is applied to the blue-phase liquid crystal microlens array and the image display equipment displays the 2D image, the blue-phase-liquid-crystal-microlens-array-based integrated imaging display device realizes 2D display; when an appropriate drive voltage unequal to V0 is applied to the blue-phase liquid crystal microlens array and the image display equipment displays the micro-image array, the blue-phase-liquid-crystal-microlens-array-based integrated imaging display device realizes integrated imaging 3D (Three-Dimensional) display; and the improvement on the integrated imaging display performance can also be achieved through reasonably setting and regulating the drive voltage of the blue-phase liquid crystal microlens array of the blue-phase-liquid-crystal-microlens-array-based integrated imaging display device.
Description
Technical field
The present invention relates to display technique, more particularly, the present invention relates to the integration imaging display technique, refer to a kind of integration imaging display technique especially based on the blue phase liquid crystal microlens array.
Background technology
Integration imaging is a kind of technology of utilizing microlens array to write down and reproducing three-dimensional (3D) scene, and it comprises shooting and shows two processes.In shooting process; Employing by many lens cells in the horizontal and vertical directions the microlens array formed of parallel arranged obtain the steric information of 3D scene; And record steric information on the image recorder that is positioned at the microlens array focal plane and to obtain image primitive; All image primitives are parallel arranged in the horizontal and vertical directions, has formed little pattern matrix.The microlens array that the microlens array that in procedure for displaying, adopts adopts when taking generally has identical parameter; Little pattern matrix is shown on the image display; Image display is placed on a distance behind the microlens array, according to the light path principle of reversibility, and the light-ray condensing reduction that microlens array transmits various image primitives; Thereby near microlens array, reconstruct the full real stereo image of 3D scene; This stereo-picture comprises authentic color and continuous parallax information, and the beholder need not to wear utility appliance just can obtain to watch the sensation of real scene, and does not have the stereos copic viewing visual fatigue.
Microlens array is the key components of integration imaging display system, mainly is divided into two kinds of conventional microlens array and conventional liquid crystal microlens arrays at present.Conventional microlens array is generally by manufacturings such as glass or organic materials, and its technical requirement is higher, and Nonadjustable focusing, and therefore the integration imaging demonstration based on conventional microlens array can only realize that 3D shows.Integration imaging demonstration based on conventional liquid crystal microlens array can realize freely switching between the 2D/3D demonstration, but its making needs oriented layer, complex process, and the 2D/3D switch speed is slower.
Indigo plant is a kind of new liquid crystal phase mutually, and its principle of work is based on Kerr effect, and the birefringence of inducing that is caused by extra electric field is determined by following formula:
（1）
Wherein λ is an optical wavelength,
KBe Kerr constanr,
EBe electric field intensity.Can know by formula (1), induce birefringence (Δ
n)
IndWith extra electric field
ESquare.Research shows, along with
ELasting increase, (Δ
n)
IndCan be tending towards saturated gradually.When not applying driving voltage, blue phase liquid crystal is optical isotropy, and inducing birefringence is zero; When applying driving voltage, blue phase liquid crystal becomes optical anisotropy, and in the process that adds the driving voltage variation, it does not have the rearrangement cloth problems such as rotation of liquid crystal molecule in the conventional liquid crystal, and need not oriented layer, and its response speed is accelerated greatly.
Summary of the invention
The present invention proposes a kind of integration imaging display device based on the blue phase liquid crystal microlens array, and shown in accompanying drawing 1, this device comprises image display and blue phase liquid crystal microlens array.Image display is used to show 2D image or little pattern matrix, and it is placed on a distance behind the blue phase liquid crystal microlens array, and both center-aligned.On the blue phase liquid crystal microlens array, apply suitable driving voltage
V 0And when image display showed the 2D image, this device realized that 2D shows; On the blue phase liquid crystal microlens array, apply and be not equal to
V 0Suitable driving voltage and image display when showing little pattern matrix, this device realizes that integration imaging 3D shows.
Preferably; In said device; Shown in accompanying drawing 2, the blue phase liquid crystal microlens array comprises upper substrate glassy layer, upper substrate arc ito transparent electrode, dielectric layer, blue phase liquid crystal layer, infrabasal plate planar I TO transparency electrode, lower baseplate glass layer, and they are closely arranged.Wherein upper substrate arc ito transparent electrode radius-of-curvature does
r, every section strict corresponding pitch of arc-shaped electrode does
pThe blue phase liquid crystal lens cells, the thickness of blue phase liquid crystal lens cells edge dielectric layer does
d
Preferably, in said device, the blue phase liquid crystal lens cells in the blue phase liquid crystal microlens array is taked the tight arrangement form of two-dimensional and periodic.
Preferably, in said device, the focal length of blue phase liquid crystal microlens array
fWith driving voltage
VSatisfy relation:
Wherein,
n 1Be upper and lower base plate glass refractive index,
n 2Be the dielectric layer refractive index,
d bBe the blue phase liquid crystal layer thickness.
Preferably, in said device, can know, if the blue phase liquid crystal microlens array is applied driving voltage by relational expression (2)
, blue phase liquid crystal microlens array focal length then
fBecome infinity, this device can realize that 2D shows.
Preferably, in said device, keep the distance of image display apart from the blue phase liquid crystal microlens array
gConstant, regulate driving voltage
V(
V≠
V 0) make focal length respectively
, determine and three three groups of driving voltage values that focal length value is corresponding, through between three magnitudes of voltage, switching flexibly, can realize the conversion of empty pattern, focusing mode and real pattern that integration imaging 3D shows easily, to satisfy the demand of different application occasion.
Preferably, in said device, utilize fast characteristics of blue phase liquid crystal response time, can realize the fast zoom of blue phase liquid crystal microlens array, thereby construct a plurality of central depths plane, increase the degree of depth of reproducing the 3D scene through the quick adjustment driving voltage.
Integration imaging display device based on the blue phase liquid crystal microlens array does not need oriented layer, and technology is simple, and cost is lower, and the response time is fast, can realize fast zoom, can increase the degree of depth of reproducing the 3D scene and can realize the 2D/3D switching displayed easily.
Description of drawings
Accompanying drawing 1 is for the present invention is based on the integration imaging display device of blue phase liquid crystal microlens array.
Shown by reference numeral in the above-mentioned accompanying drawing is:
1 image display, 2 blue phase liquid crystal microlens arrays, the 3D scene of 3 reproductions, 4 upper substrate glassy layers; 5 upper substrate arc ito transparent electrodes, 6 dielectric layers, 7 blue phase liquid crystal layer; 8 infrabasal plate planar I TO transparency electrodes, 9 lower baseplate glass layers, 10 blue phase liquid crystal lens cells.
Should be appreciated that above-mentioned accompanying drawing just schematically, not drafting in proportion.
Embodiment
Specify an exemplary embodiments utilizing a kind of integration imaging display device based on the blue phase liquid crystal microlens array of the present invention below, the present invention is further described.Be necessary to be pointed out that at this; Following examples only are used for the present invention and do further explanation; Can not be interpreted as restriction to protection domain of the present invention; This art skilled person makes some nonessential improvement and adjustment according to the foregoing invention content to the present invention, still belongs to protection scope of the present invention.
The present invention proposes a kind of integration imaging display device based on the blue phase liquid crystal microlens array, and shown in accompanying drawing 1, this device comprises image display and blue phase liquid crystal microlens array.Image display is used to show 2D image or little pattern matrix, and it is placed on a distance behind the blue phase liquid crystal microlens array, and both center-aligned.On the blue phase liquid crystal microlens array, apply suitable driving voltage
V 0And when image display showed the 2D image, this device realized that 2D shows; On the blue phase liquid crystal microlens array, apply and be not equal to
V 0Suitable driving voltage and image display when showing little pattern matrix, this device realizes that integration imaging 3D shows.
In said device, the blue phase liquid crystal lens cells adopts the structure shown in the accompanying drawing 2, the focal length of blue phase liquid crystal microlens array
fWith driving voltage
VSatisfy relation:
In said device, optical wavelength
λ=633nm, Kerr constanr
k=10nm/v
2, the correlation parameter of blue phase liquid crystal lens cells does
n 1=1.516,
n 2=1.511,
r=450um,
d=2um,
d b=16um, the pitch of image primitive and blue phase liquid crystal lens cells is
p=300um, and total number all is 1280 * 800.
During the 2D mode of operation, image display is used to show the 2D image, applies driving voltage on the blue phase liquid crystal microlens array
, promptly
V 0=34.6V then can be known by relational expression (2), at this moment blue phase liquid crystal microlens array focal length
fBecome infinity, this device realizes that 2D shows.
During the 3D mode of operation, image display is used to show the little pattern matrix of integration imaging, and driving voltage is set to
V=80V then can know that by relational expression (2) focal length of blue phase liquid crystal microlens array does
f≈ 20.8mm; Image display is placed on the back focal plane of blue phase liquid crystal microlens array; And both center-aligned; The blue phase liquid crystal microlens array reduces the light-ray condensing that various image primitives transmit, thereby near the blue phase liquid crystal microlens array, reconstructs the full real stereo image of 3D scene, realizes that integration imaging 3D shows.
In said device, can know by relational expression (2), if driving voltage is set to
V=70V, then the focal length of blue phase liquid crystal microlens array does
f≈ 29.2mm; If driving voltage is set to
V=90V, then the focal length of blue phase liquid crystal microlens array does
f≈ 15.6mm.Keep the distance of image display apart from the blue phase liquid crystal microlens array
g=20.8mm is constant, regulates driving voltage
VEqual 70V respectively, 80V and 90V can make corresponding focal length satisfy respectively
Thereby,, realize the conversion between empty pattern, focusing mode and the real pattern that integration imaging 3D shows easily, to satisfy the demand of different application occasion through between three magnitudes of voltage, switching flexibly.
In said device, utilize fast characteristics of blue phase liquid crystal response time, realize the fast zoom of blue phase liquid crystal microlens array through the quick adjustment driving voltage, thereby construct a plurality of central depths plane, increase the degree of depth of reproducing the 3D scene.
Claims (6)
1. integration imaging display device based on the blue phase liquid crystal microlens array; It is characterized in that; This device comprises image display and blue phase liquid crystal microlens array, and image display is used to show 2D image or little pattern matrix, and it is placed on a distance behind the blue phase liquid crystal microlens array; And both center-aligned apply suitable driving voltage on the blue phase liquid crystal microlens array
V 0And when image display showed the 2D image, this device realized that 2D shows, on the blue phase liquid crystal microlens array, applies to be not equal to
V 0Suitable driving voltage and image display when showing little pattern matrix, this device realizes that integration imaging 3D shows.
2. a kind of integration imaging display device according to claim 1 based on the blue phase liquid crystal microlens array; It is characterized in that; The blue phase liquid crystal microlens array comprises upper substrate glassy layer, upper substrate arc ito transparent electrode, dielectric layer, blue phase liquid crystal layer, infrabasal plate planar I TO transparency electrode, lower baseplate glass layer; They are closely arranged, every section strict corresponding blue phase liquid crystal lens cells of arc-shaped electrode, and the blue phase liquid crystal lens cells is taked the tight arrangement form of two-dimensional and periodic.
3. a kind of integration imaging display device based on the blue phase liquid crystal microlens array according to claim 2 is characterized in that the focal length of blue phase liquid crystal microlens array
fWith driving voltage
VSatisfy relation
, wherein,
n 1Be upper and lower base plate glass refractive index,
n 2Be the dielectric layer refractive index,
d bBe the blue phase liquid crystal layer thickness,
dBe the thickness of blue phase liquid crystal lens cells edge dielectric layer,
pBe the pitch of blue phase liquid crystal lens cells,
λBe optical wavelength,
kBe Kerr constanr,
rBe upper substrate arc ito transparent electrode radius-of-curvature.
4. according to the described a kind of integration imaging display device of each claim of claim 1-3, it is characterized in that, if the blue phase liquid crystal microlens array is applied driving voltage based on the blue phase liquid crystal microlens array
, blue phase liquid crystal microlens array focal length then
fBecome infinity, this device can realize that 2D shows.
5. according to the described a kind of integration imaging display device of each claim of claim 1-3, it is characterized in that, keep the distance of image display apart from the blue phase liquid crystal microlens array based on the blue phase liquid crystal microlens array
gConstant, regulate driving voltage
V(
V≠
V 0) make focal length respectively
, determine and three three groups of driving voltage values that focal length value is corresponding, through between three magnitudes of voltage, switching flexibly, can realize the conversion between empty pattern, focusing mode and the real pattern that integration imaging 3D shows easily, to satisfy the demand of different application occasion.
6. according to claim 1; 2,3 and 5 described a kind of integration imaging display device based on the blue phase liquid crystal microlens array is characterized in that; Utilize fast characteristics of blue phase liquid crystal response time; Can realize the fast zoom of blue phase liquid crystal microlens array through the quick adjustment driving voltage, thereby construct a plurality of central depths plane, increase the degree of depth of reproducing the 3D scene.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809867A (en) * | 2012-08-14 | 2012-12-05 | 深圳超多维光电子有限公司 | Stereoscopic display device |
| CN102829879A (en) * | 2012-08-30 | 2012-12-19 | 华中科技大学 | Infrared imaging detection chip integrated with liquid crystal optically-controlled array and area array photosensitive structure |
| CN102853919A (en) * | 2012-08-29 | 2013-01-02 | 华中科技大学 | Wavefront measuring chip of hybrid integrated planar array liquid crystal micro-lens and infrared detector |
| CN103091928A (en) * | 2013-01-05 | 2013-05-08 | 东南大学 | Electrically-controlled focal-adjustable liquid crystal lens array |
| CN103605210A (en) * | 2013-11-07 | 2014-02-26 | 四川大学 | Virtual type integrated imaging 3D display device |
| CN103852949A (en) * | 2012-12-05 | 2014-06-11 | Nlt科技股份有限公司 | Stereoscopic image display device |
| CN105487240A (en) * | 2015-11-26 | 2016-04-13 | 成都工业学院 | No-crosstalk integrated imaging double-vision 3D display device |
| CN105573006A (en) * | 2016-03-02 | 2016-05-11 | 南京大学 | Electronic paper of three-dimensional pixel structure |
| CN109597210A (en) * | 2017-09-20 | 2019-04-09 | 天马日本株式会社 | Display device |
| CN109828378A (en) * | 2019-02-15 | 2019-05-31 | 陶烈晖 | Trivector shoots with video-corder display methods and device |
| CN109917555A (en) * | 2019-04-02 | 2019-06-21 | 仰恩大学 | A kind of micro-lens array device of achievable integration imaging 2D/3D conversion |
| CN110244469A (en) * | 2019-06-19 | 2019-09-17 | 中国人民解放军陆军装甲兵学院 | A kind of determination method and system of directional scattering device position and diffusion angle |
| CN111190315A (en) * | 2018-11-14 | 2020-05-22 | 成都微晶景泰科技有限公司 | Lens array image conversion device and imaging apparatus |
| CN113238306A (en) * | 2021-04-19 | 2021-08-10 | 福州大学 | Multi-focal-length micro lens array for improving depth of field of integrated imaging 3D display and preparation method thereof |
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Non-Patent Citations (1)
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102809867A (en) * | 2012-08-14 | 2012-12-05 | 深圳超多维光电子有限公司 | Stereoscopic display device |
| CN102809867B (en) * | 2012-08-14 | 2016-07-06 | 深圳超多维光电子有限公司 | A kind of 3 d display device |
| CN102853919A (en) * | 2012-08-29 | 2013-01-02 | 华中科技大学 | Wavefront measuring chip of hybrid integrated planar array liquid crystal micro-lens and infrared detector |
| CN102853919B (en) * | 2012-08-29 | 2014-03-05 | 华中科技大学 | Wavefront measuring chip of hybrid integrated planar array liquid crystal micro-lens and infrared detector |
| CN102829879A (en) * | 2012-08-30 | 2012-12-19 | 华中科技大学 | Infrared imaging detection chip integrated with liquid crystal optically-controlled array and area array photosensitive structure |
| CN103852949A (en) * | 2012-12-05 | 2014-06-11 | Nlt科技股份有限公司 | Stereoscopic image display device |
| CN103091928A (en) * | 2013-01-05 | 2013-05-08 | 东南大学 | Electrically-controlled focal-adjustable liquid crystal lens array |
| CN103605210A (en) * | 2013-11-07 | 2014-02-26 | 四川大学 | Virtual type integrated imaging 3D display device |
| CN105487240B (en) * | 2015-11-26 | 2018-11-30 | 成都工业学院 | A kind of no crosstalk integration imaging double vision 3D display device |
| CN105487240A (en) * | 2015-11-26 | 2016-04-13 | 成都工业学院 | No-crosstalk integrated imaging double-vision 3D display device |
| CN105573006A (en) * | 2016-03-02 | 2016-05-11 | 南京大学 | Electronic paper of three-dimensional pixel structure |
| CN105573006B (en) * | 2016-03-02 | 2019-04-05 | 南京大学 | A kind of Electronic Paper of voxel structure |
| CN109597210A (en) * | 2017-09-20 | 2019-04-09 | 天马日本株式会社 | Display device |
| CN111190315A (en) * | 2018-11-14 | 2020-05-22 | 成都微晶景泰科技有限公司 | Lens array image conversion device and imaging apparatus |
| CN109828378A (en) * | 2019-02-15 | 2019-05-31 | 陶烈晖 | Trivector shoots with video-corder display methods and device |
| CN109917555A (en) * | 2019-04-02 | 2019-06-21 | 仰恩大学 | A kind of micro-lens array device of achievable integration imaging 2D/3D conversion |
| CN110244469A (en) * | 2019-06-19 | 2019-09-17 | 中国人民解放军陆军装甲兵学院 | A kind of determination method and system of directional scattering device position and diffusion angle |
| CN110244469B (en) * | 2019-06-19 | 2021-03-23 | 中国人民解放军陆军装甲兵学院 | Method and system for determining position and diffusion angle of directional diffuser |
| CN113238306A (en) * | 2021-04-19 | 2021-08-10 | 福州大学 | Multi-focal-length micro lens array for improving depth of field of integrated imaging 3D display and preparation method thereof |
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Application publication date: 20120627 |