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Dynamic diffusion sheet assembly, control method, laser speckle eliminating device and projector

A technology of dynamic diffusion and control method, applied in the field of laser projection, which can solve the problems affecting the effect of speckle removal and the inability to maximize the application area

Active Publication Date: 2021-05-07
SHENZHEN HUOLE TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first purpose of the present disclosure is to provide a dynamic diffuser assembly, which can solve the technical problem that the existing rotary diffuser cannot maximize the application area and affect the overall effect of speckle removal

Method used

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  • Dynamic diffusion sheet assembly, control method, laser speckle eliminating device and projector
  • Dynamic diffusion sheet assembly, control method, laser speckle eliminating device and projector
  • Dynamic diffusion sheet assembly, control method, laser speckle eliminating device and projector

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Embodiment Construction

[0035] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0036] In this disclosure, the use of orientation words such as "upper", "lower", "top", "bottom", "left", "right" generally refer to the It is defined when the dynamic diffuser is in normal use, for details, please refer to Figure 4 and Figure 5 In the directions shown in the drawings, "inside" and "outside" refer to the inside and outside of the outline of the corresponding component. In addition, when the following description refers to the drawings, the same reference numerals in different drawings indicate the same or similar elements.

[0037] The present disclosure provides a dynamic diffuser assembly, such as figure 1 and figure 2 As shown, th...

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Abstract

The invention relates to a dynamic diffusion sheet assembly, a control method, a laser speckle eliminating device and a projector. The dynamic diffusion sheet assembly comprises a fixed layer and a moving layer provided with an optical diffusion sheet, and further comprises a driving part and a controller connected with the driving part, wherein the driving part is configured to drive the moving layer to move relative to the fixed layer in the first direction and the second direction respectively in a plane parallel to the optical diffusion sheet. According to the dynamic diffusion sheet assembly, a layered arrangement mode is adopted, the fixed layer is kept still, the driving part drives the movable layer to drive the optical diffusion sheet to move in two directions, a certain point on the optical diffusion sheet has two-dimensional movement flexibility, and compared with a traditional rotary diffusion sheet, the dynamic diffusion sheet assembly has the advantages that the coverage area is larger, different phase divergence angles on the optical diffusion sheet can be fully utilized, the actually utilized area is larger under the condition of the same size, the area utilization rate of the dynamic diffusion sheet is improved, the coherence of laser is better weakened, and a better speckle elimination effect is achieved.

Description

technical field [0001] The present disclosure relates to the technical field of laser projection, in particular, to a dynamic diffusion sheet assembly and a control method, a laser speckle elimination device, and a projector. Background technique [0002] Laser projection display technology can most truly reproduce the rich and brilliant colors of the objective world and provide shocking expressiveness. Among them, eliminating speckle is a relatively popular research topic in laser projection technology. In the existing laser speckle elimination device, multiple groups of diffusion sheets are set at different positions of the optical path to achieve the effect of speckle elimination. [0003] Diffusers are divided into static diffusers and dynamic optical diffusers (Dynamic Optical Diffuser). The existing dynamic diffusers are mostly in the form of rotating diffuser wheels. In the case of , increasing the number of random phases of the diffuser per unit time can obtain a be...

Claims

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Application Information

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IPC IPC(8): G03B21/14G03B21/20G02B27/09G02B27/48
CPCG03B21/14G03B21/208G02B27/0933G02B27/48
Inventor 胡震宇欧阳剑常征
Owner SHENZHEN HUOLE TECH DEV CO LTD
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