Invention Grant
- Patent Title: Optical system and method for providing compressed eyebox
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Application No.: US17064573Application Date: 2020-10-06
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Publication No.: US11415805B2Publication Date: 2022-08-16
- Inventor: Ningfeng Huang , Oleg Yaroshchuk , Heeyoon Lee , Giuseppe Calafiore , Barry David Silverstein
- Applicant: Facebook Technologies, LLC
- Applicant Address: US CA Menlo Park
- Assignee: Facebook Technologies, LLC
- Current Assignee: Facebook Technologies, LLC
- Current Assignee Address: US CA Menlo Park
- Agency: Millburn IP PLLC
- Main IPC: G02B27/01
- IPC: G02B27/01 ; G02B27/00 ; F21V8/00 ; G02B3/00

Abstract:
A method includes determining eye tracking information of an eye pupil. A method also includes selectively configuring, based on the eye tracking information, one or more combinations of gratings included in a plurality of grating sets coupled with one or more waveguides to operate in a diffraction state to direct an image light to propagate through one or more sub-eyeboxes of a plurality of sub-eyeboxes. The plurality of sub-eyeboxes define an uncompressed eyebox. The one or more sub-eyeboxes of the plurality of sub-eyeboxes define a compressed eyebox having a size smaller than a size of the uncompressed eyebox.
Public/Granted literature
- US20210199958A1 OPTICAL SYSTEM AND METHOD FOR PROVIDING COMPRESSED EYEBOX Public/Granted day:2021-07-01
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