Invention Grant
- Patent Title: Multi-wavelength self-mixing interferometry
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Application No.: US17207025Application Date: 2021-03-19
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Publication No.: US11640054B2Publication Date: 2023-05-02
- Inventor: Maik Andre Scheller , Liliana Ruiz Diaz , Marc Aurele Gilles , Andrew John Ouderkirk , Robert Dale Cavin
- Applicant: Meta Platforms Technologies, LLC
- Applicant Address: US CA Menlo Park
- Assignee: Meta Platforms Technologies, LLC
- Current Assignee: Meta Platforms Technologies, LLC
- Current Assignee Address: US CA Menlo Park
- Agency: Freestone Intellectual Property Law PLLC
- Agent Aaron J. Visbeek
- Main IPC: G02B27/00
- IPC: G02B27/00 ; G01B9/02 ; G02B27/01 ; H04N5/33
Abstract:
An eyebox region is illuminated with first coherent light and second coherent light having a different wavelength than the first coherent light. A first self-mixed interferometer (SMI) signal is generated in response to first feedback light received back from the eyebox region. A second SMI signal is generated in response to second feedback light received back from the eyebox region. Eye data is generated in response to at least the first SMI signal and the second SMI signal.
Public/Granted literature
- US20220299761A1 Multi-Wavelength Self-Mixing Interferometry Public/Granted day:2022-09-22
Information query
