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Diffusion sheet assembly, light beam speckle eliminating device and projector

A diffuser and component technology, applied in the field of projection display, can solve the problems of inability to maximize the application area of ​​the diffuser, poor speckle dissipation effect, poor speckle elimination effect, etc., so as to improve the speckle dissipation effect, improve stability, random The effect of increasing the number of phases

Active Publication Date: 2021-11-12
SHENZHEN HUOLE TECH DEV CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The diffuser close to the beam source is used to eliminate smaller light spots, and the required diffuser size is smaller, but for the rotating diffuser wheel, the small-sized diffuser provides less random phase, and the speckle elimination effect is poor
In addition, increasing the size of the diffusion wheel requires a larger rotating wheel. The actual application area is limited, and it is impossible to maximize the application area of ​​the diffusion sheet, and the effect of dispersing spots is poor.

Method used

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  • Diffusion sheet assembly, light beam speckle eliminating device and projector
  • Diffusion sheet assembly, light beam speckle eliminating device and projector
  • Diffusion sheet assembly, light beam speckle eliminating device and projector

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Embodiment Construction

[0080] 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.

[0081] In this disclosure, the use of orientation words such as "first direction" and "second direction" may refer to figure 1 Shown; beam penetration direction can also refer to figure 1 As shown; the use of orientation words such as "inside and outside" refers to the inside and outside of the specific structure outline, and the use of terms such as "first, second, third and fourth" is only to distinguish one element from another Elements do not have sequence and importance.

[0082] refer to Figure 1 to Figure 6 As shown, the present disclosure provides a diffuser assembly, which includes a first moving layer 103, a base 104, a first elastic member 105,...

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Abstract

The invention relates to a diffusion sheet assembly, a light beam speckle eliminating device and a projector. The diffusion sheet assembly comprises a first moving layer, a base, a first elastic piece, a second elastic piece and a diffusion sheet, wherein a driving part comprises a first driving part and a second driving part, the first elastic piece is connected with the diffusion sheet and the first moving layer, the first elastic piece can deform in the first direction parallel to the diffusion sheet so as to make the diffusion sheet move in the first direction relative to the first moving layer, the second elastic piece is connected with the first moving layer and the base, the second elastic piece can deform in the second direction parallel to the diffusion sheet so as to make the first moving layer and the diffusion sheet move in the second direction relative to the base, the first driving part drives the diffusion sheet to move along a first direction relative to the first moving layer, the second driving part drives the first moving layer and the diffusion sheet to move along a second direction relative to the base, and the first direction and the second direction intersect. According to the invention, the number of random phases of the diffusion sheet in unit time is large, and the speckle dissipation effect is good.

Description

technical field [0001] The present disclosure relates to the technical field of projection display, and in particular, to a diffuser assembly, a light beam speckle elimination device, and a projector. Background technique [0002] Beam 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 beam projection technology. on coherence. [0003] The existing beam speckle elimination structure mostly adopts the form of a rotating diffuser wheel. The principle is the superposition of multiple independent speckle patterns per unit time. When the rotation speed is constant, the number of random phases of the diffuser per unit time is increased, that is, Can get better anti-spot effect. The diffuser close to the beam source is used to eliminate smaller spots, and the size of the required diffuser is smaller, but for the ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14G02B27/48G02B26/06G02B5/02
CPCG03B21/14G02B27/48G02B26/06G02B5/0273
Inventor 欧阳剑徐旭升陈仁喆张聪胡震宇
Owner SHENZHEN HUOLE TECH DEV CO LTD
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