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US Patent 10649141 Gratings with variable etch heights for waveguide displays

Patent 10649141 was granted and assigned to Facebook on May, 2020 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Patent Applicant

Facebook

Current Assignee

Facebook

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

106491410

Date of Patent

May 12, 2020

Patent Application Number

159603120

Date Filed

April 23, 2018

Patent Citations Received

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US Patent 11402578 Gratings with variable depths formed using planarization for waveguide displays

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US Patent 11766744 Method of forming a plurality of gratings

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US Patent 11372149 Depth-modulated slanted gratings using gray-tone lithography and slant etch

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US Patent 11391870 Height-modulated diffractive master plate and method of manufacturing thereof

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US Patent 11579364 Gratings with variable depths formed using planarization for waveguide displays

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US Patent 11662524 Forming variable depth structures with laser ablation

Patent Primary Examiner

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Michelle R. Connelly-Cushua

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