- 专利标题： Eye tracking with switchable gratings
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申请号： US17697592申请日： 2022-03-17
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公开(公告)号： US11846774B2公开(公告)日： 2023-12-19
- 发明人: Sihui He , Jacques Gollier , Maxwell Parsons , Babak Amirsolaimani , Wanli Chi , Daniel Guenther Greif , Renate Eva Klementine Landig , Xiayu Feng , Zhimin Shi , Nicholas John Diorio , Yang Yang , Giuseppe Calafiore , Fenglin Peng , Tanya Malhotra , Andrew John Ouderkirk
- 申请人： Meta Platforms Technologies, LLC
- 申请人地址： US CA Menlo Park
- 专利权人： Meta Platforms Technologies, LLC
- 当前专利权人： Meta Platforms Technologies, LLC
- 当前专利权人地址： US CA Menlo Park
- 代理机构： PEQUIGNOT + MYERS
- 代理商 Matthew A. Pequignot
- 主分类号： G02B27/00
- IPC分类号： G02B27/00 ; G02B27/01 ; G06F3/01 ; G02F1/29 ; F21V8/00 ; G02B6/35 ; G02F1/1335 ; G09G3/00 ; G09G3/34 ; G06T7/246 ; H04N23/56 ; G02F1/335 ; G03H1/02 ; G06F1/16 ; H04N23/698 ; G01B11/22 ; G01S7/4865 ; G01S17/10 ; G02B27/42 ; G02F1/33 ; G06T3/40 ; G02B27/44 ; G02B26/08 ; H04N23/10
摘要：
A pupil-replicating lightguide includes a slab of transparent material, a switchable out-coupling grating for out-coupling portions of image light to propagate towards an eyebox, and a switchable tracking grating for redirecting tracking light carrying an eye image towards an eye tracking camera. One of the two gratings may be turned ON while the other is turned OFF, in a time-sequential manner, allowing the combined use of the pupil-replicating lightguide for carrying image light and eye tracking light.
公开/授权文献
- US20230176370A1 EYE TRACKING WITH SWITCHABLE GRATINGS 公开/授权日：2023-06-08
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