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

Yong Han Chen; Jui Wen Pan; Shie Chang Jeng

doi:10.1016/j.displa.2022.102305

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

Yong Han Chen, Jui Wen Pan^*, Shie Chang Jeng

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

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/μm).

Original language	English
Article number	102305
Journal	Displays
Volume	75
DOIs	https://doi.org/10.1016/j.displa.2022.102305
State	Published - Dec 2022

Keywords

Dynamic light scattering
Laser pico-projector
Laser speckle
Liquid crystal

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10.1016/j.displa.2022.102305

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title = "A low speckle laser pico-projector using dynamic light scattering liquid crystal devices",

abstract = "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/μm).",

keywords = "Dynamic light scattering, Laser pico-projector, Laser speckle, Liquid crystal",

author = "Chen, {Yong Han} and Pan, {Jui Wen} and Jeng, {Shie Chang}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = dec,

doi = "10.1016/j.displa.2022.102305",

language = "English",

volume = "75",

journal = "Displays",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - A low speckle laser pico-projector using dynamic light scattering liquid crystal devices

AU - Chen, Yong Han

AU - Pan, Jui Wen

AU - Jeng, Shie Chang

PY - 2022/12

Y1 - 2022/12

N2 - 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/μm).

AB - 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/μm).

KW - Dynamic light scattering

KW - Laser pico-projector

KW - Laser speckle

KW - Liquid crystal

UR - http://www.scopus.com/inward/record.url?scp=85138476122&partnerID=8YFLogxK

U2 - 10.1016/j.displa.2022.102305

DO - 10.1016/j.displa.2022.102305

M3 - Article

AN - SCOPUS:85138476122

SN - 0141-9382

VL - 75

JO - Displays

JF - Displays

M1 - 102305

ER -

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

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Keywords

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