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Speckle suppression movement device based on flexible diffractive optical element

A diffractive optical element and motion device technology, applied in optical elements, optics, instruments, etc., can solve the problems of low transmission efficiency of flexible films, large damage to diffractive optical microstructures, etc., to solve the problem of seaming, avoid deformation, and stabilize Good results

Active Publication Date: 2021-04-09
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the deficiencies of the existing speckle dissipating devices, such as low transmission efficiency of the flexible film, large damage to the microstructure of the diffractive optics, and impact of seams on projection imaging, the present invention provides a flexible diffractive optical element with high transmission efficiency, good stability, and long service life. , Speckle suppression motion device that can eliminate the effect of patchwork

Method used

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  • Speckle suppression movement device based on flexible diffractive optical element
  • Speckle suppression movement device based on flexible diffractive optical element
  • Speckle suppression movement device based on flexible diffractive optical element

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] refer to Figure 1 ~ Figure 3 , a speckle suppression motion device based on a flexible diffractive optical element, comprising a flexible film with a diffractive optical microstructure and a transmission system for driving the flexible film, the flexible film includes a middle part 101 and two side parts 102, The middle part 101 is engraved with diffractive optical microstructures, and the two side parts 102 are adhesive structures; the adhesive structures are linked with the transmission system.

[0027] Further, the widths of the two side parts of the flexible film are the same, and the widths of the two conveyor belts 103 are the same as the width of the side parts. The parts 102 on both sides are not engraved with diffractive optical microstructures, and are flat and suitable for adhesion.

[0028] Further, the flexible film adopts materials with good ela...

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Abstract

A speckle suppression movement device based on a flexible diffractive optical element comprises a flexible thin film with a diffractive optical microstructure and a transmission system used for driving the flexible thin film to move, the flexible thin film comprises a middle part and two side parts, the middle part is engraved with the diffractive optical microstructure, and the two side parts are of adhesion structures; and the adhesion structure is linked with the transmission system. The speckle suppression movement device is high in transmission efficiency, good in stability, long in service life of a flexible diffractive optical element and capable of eliminating the influence of abutted seams.

Description

technical field [0001] The invention belongs to the field of laser display projection, and in particular relates to an adaptive motion device using a flexible diffractive optical element to suppress laser scattering. Background technique [0002] With the development of society and economy, people have higher and higher requirements for watching movies. Family viewing has changed from black and white TVs back then to large-screen LCD TVs and laser projectors that are becoming more and more popular. [0003] Laser is a light source with high brightness and wide color gamut, which has the advantages of long life, energy saving and environmental protection. Applying the laser to the projector can not only make the projector smaller, but also reproduce the rich and bright colors of the objective world most realistically, providing more shocking expressiveness. [0004] But at the same time, the speckle produced by laser coherence reduces the quality of the projected image, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/42G02B27/48G02B26/06
CPCG02B27/4233G02B27/48G02B26/06
Inventor 乐孜纯李加坡
Owner ZHEJIANG UNIV OF TECH
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