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US Patent 11988854 Wide field-of-view holographic skew mirrors

Patent 11988854 was granted and assigned to Akonia Holographics, LLC on May, 2024 by the United States Patent and Trademark Office.

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Patent attributes

Current Assignee

Akonia Holographics, LLC

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

Patent Inventor Names

Friso Schlottau0

Adam Urness0

Kenneth E. Anderson0

Mark R. Ayres0

Date of Patent

May 21, 2024

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Patent Application Number

160899650

Date Filed

March 1, 2017

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US Patent 7502168 Optical device and image display apparatus

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US Patent 7764413 General diffractive optics method for expanding an exit pupil

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US Patent 8160411 Device for expanding an exit pupil in two dimensions

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Patent Primary Examiner

Balram T Parbadia

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Patent abstract

A holographic skew mirror has a reflective axis, or skew axis, that can be tilted with respect to its surface normal. Tilting the skew axis in two dimensions with respect to the surface normal expands the holographic skew mirror's possible field of view, e.g., to 60 or more. These additional angles can be accessed using an out-of-plane writing geometry with matched total internal grazing extension rotation (TIGER) prisms.

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