The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 2023
Filed:
Jul. 08, 2019
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Gregory Olegovic Andreev, Kirkland, WA (US);
Gang Li, Bothell, WA (US);
Erik Shipton, Kenmore, WA (US);
Yingfei Jiang, Redmond, WA (US);
Wanli Chi, Sammamish, WA (US);
Andrew John Ouderkirk, Kirkland, WA (US);
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Abstract
Techniques disclosed herein relate to a near-eye display system. One example of an eye-tracking system includes a substrate transparent to visible light and infrared light and a reflective holographic grating conformally coupled to a surface of the substrate. The reflective holographic grating is configured to transmit the visible light and reflectively diffract infrared light in a first wavelength range for eye tracking. The refractive index modulation of the reflective holographic grating is apodized in a direction along a thickness of the reflective holographic grating to reduce optical artifacts in the visible light.