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US Patent 11838691 Laser illumination system with reduced speckle via phase shift

Patent 11838691 was granted and assigned to Snap Inc. on December, 2023 by the United States Patent and Trademark Office.

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Patent attributes

Patent Applicant

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Current Assignee

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Joshua T. Wiersma0

Michael Dubinovsky0

Date of Patent

December 5, 2023

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Patent Application Number

164940860

Date Filed

March 13, 2018

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Patent Citations

US Patent 8132917 Projection type display device with a phase modulating unit

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US Patent 8224133 Laser illumination device

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US Patent 8565560 Laser illumination device

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US Patent 8899754 Projection type image display apparatus and control method therefor

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US Patent 8902506 Laser speckle reduction element

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US Patent 8905548 Device and method for reducing speckle in projected images

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US Patent 9063357 Method for despeckling in laser display systems

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US Patent 9335558 Illumination device and display device

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Patent Primary Examiner

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CPC Code

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Patent abstract

An illumination system is disclosed, and such system may include a first light modulator (

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