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Large depth of field integrated imaging three-dimensional display device and method

A three-dimensional display and integrated imaging technology, applied in static indicators, nonlinear optics, instruments, etc., can solve problems such as system complexity, image brightness and quality reduction, and inability to achieve such a high refresh rate, so as to change the imaging depth of field, solve The effect of depth of field mismatch

Active Publication Date: 2021-07-20
深圳英伦科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Multi-display superposition is not only costly and complex, but also reduces image brightness and quality to varying degrees
[0005] Based on the timing variable focus microlens array, the refresh rate of the microlens array needs to reach KHz, and all the sub-lenses are continuously zoomed under the control of the voltage to realize reciprocating scanning in the depth direction, but the current liquid crystal lens cannot achieve such a high refresh rate.
Even if some liquid crystal materials such as blue-phase liquid crystal lenses can achieve this speed, their stability is poor and it is not easy to industrialize

Method used

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  • Large depth of field integrated imaging three-dimensional display device and method

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Embodiment 1

[0066] Embodiment 1, in order to realize an independently adjustable multi-focus microlens array, the present invention proposes a feasible design scheme. The independently adjustable multi-focal microlens array consists of two parts, refer to Figure 4 shown. The first part is a double focal length liquid crystal lens array, such as image 3 As shown, the liquid crystal lens in the liquid crystal lens array layer selects a liquid crystal material with birefringence characteristics, where n o ≠n e ≠n pi , that is, its refractive index is different under polarized light o light and e light, and it is also not equal to the refractive index n of the material used for the prefabricated lens in the liquid crystal lens pi . Under this design, the focal length of the lens array can be changed by modulating the polarization direction of the incident light.

[0067] The second part is the polarization modulator array unit (Polarization liquid crystal, PLC): TN liquid crystal devi...

Embodiment 2

[0077] Embodiment 2, unlike Embodiment 1, the liquid crystal lens array layer can also be a GRIN liquid crystal lens array layer. The electrodes of any of the sub-lens units in the GRIN liquid crystal lens array layer are insulated from each other and can be independently controlled. A voltage on an electrode of the sub-lens unit changes the focal length of the sub-lens unit.

[0078] In addition, the present invention proposes a large depth-of-field integrated imaging three-dimensional display method, including the aforementioned large depth-of-field integrated imaging three-dimensional display device, and the large depth-of-field integrated imaging three-dimensional display method includes:

[0079] S1: Layer the three-dimensional object to be displayed according to the axial resolution of the human eye; wherein each layer corresponds to a central focal plane of the liquid crystal microlens array layer;

[0080] S2: preset a layer of central focal plane for the object point ...

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Abstract

The present invention provides a large depth of field integrated imaging three-dimensional display device and method, wherein the large depth of field integrated imaging three-dimensional display device includes: a display panel layer, a liquid crystal lens array layer, and a small hole array liquid crystal panel layer arranged in sequence; the liquid crystal lens array layer includes several sub-lenses unit; the liquid crystal lens array layer is used to gather the light emitted by different pixels corresponding to the 2D image and converges on different preset focal planes to form a 3D image; the pinhole array liquid crystal layer is used to form a pinhole array; the pinhole array liquid crystal layer It includes a clear aperture driving module unit, which is used to control the clear aperture of any small hole in the pinhole array; the focal length of any sub-lens unit in the liquid crystal lens array layer is independently adjustable. By adjusting the light aperture of the pinhole array corresponding to the common lens unit, the imaging depth of the three-dimensional object is changed, and the problem of the mismatch of the depth of field is solved.

Description

technical field [0001] The invention relates to integrated imaging three-dimensional display, in particular to a large depth of field integrated imaging three-dimensional display device and method. Background technique [0002] Integrated imaging is a very potential and most likely industrialized 3D display method. However, limited by the performance of the Micro-lens array (MLA), its depth of field and resolution are seriously affected. [0003] In order to obtain a three-dimensional display with a large depth of field, the current main solutions are multi-display superposition, a method based on a time-sequential variable-focus microlens array, and the like. [0004] Multi-display superposition is not only costly and complex, but also reduces image brightness and quality to varying degrees. [0005] The time-sequential variable-focus microlens array requires the refresh rate of the microlens array to reach KHz, and all the sub-lenses zoom continuously under the control o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B30/27G02F1/133G02F1/139G02F1/29
CPCG02F1/13306G02F1/1396G02F1/29
Inventor 贾甲康江辉陆敏濮怡莹谈宝林林汉楚冯寿坤
Owner 深圳英伦科技股份有限公司