Laser device, projection-type image display device, and sensor device

CN114089588BActive Publication Date: 2025-10-17DEXERIALS CORP
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Patent Information

Application Number
CN202110220470.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-04-28
Filing Date
2021-02-26
Publication Date
2025-10-17
Estimated Expiration
2041-02-26

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Abstract

Provided is a laser device that reduces speckle noise. The laser device includes a laser light source, a collimator lens that collimates light output from the laser light source, and a diffusion plate that diffuses light from the laser light source before collimating the light.
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Citation Information

Patent Citations

  • Semiconductor laser device

    JP2015233053A

  • Laser projection module

    CN109921278A

  • Laser illumination device

    JP2007233371A