A low speckle laser pico-projector using dynamic light scattering liquid crystal devices*

被引：10

作者：

Chen, Yong -Han ^{[1
]}

Pan, Jui-Wen ^{[2
,4
]}

Jeng, Shie-Chang ^{[3
,4
]}

机构：

[1] Natl Yang Ming Chiao Tung Univ, Inst Lighting & Energy Photon, Coll Photon, Tainan 711, Taiwan

[2] Natl Yang Ming Chiao Tung Univ, Inst Photon Syst, Coll Photon, Tainan 711, Taiwan

[3] Natl Yang Ming Chiao Tung Univ, Inst Imaging & Biomed Photon, Coll Photon, Tainan 711, Taiwan

[4] 301,Gaofa 3rd Rd, Tainan 711, Taiwan

来源：

DISPLAYS | 2022年 / 75卷

关键词：

Laser speckle; Dynamic light scattering; Liquid crystal; Laser pico-projector; REDUCTION; NOISE; SUPPRESSION; DISPLAYS; SCREEN;

D O I：

10.1016/j.displa.2022.102305

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A dynamic light scattering liquid crystal (DLS-LC) device is applied to reduce speckle from a laser pico-projector. The DLS-LC device produces time-varying scattering patterns, which can decrease the degree of spatial and temporal coherence of the laser and achieve a very effective reduction in the speckle. The influence of the amplitude and frequency of the applied electric field for the DLS-LC device on the light scattering characteristics and speckle contrast are studied. The speckle contrast is reduced by as much as 62% with a low electric field amplitude (4.2 V/mu m).

引用

页数：6

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