Invention Grant
- Patent Title: Scanning projector with multipath beam relay
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Application No.: US16597309Application Date: 2019-10-09
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Publication No.: US11199697B2Publication Date: 2021-12-14
- Inventor: Weichuan Gao , Brian Wheelwright , Maxwell Parsons , Daniel Guenther Greif , Scott Charles McEldowney
- 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: Pequignot + Myers
- Agent Matthew A. Pequignot
- Main IPC: G02B26/08
- IPC: G02B26/08 ; G02B26/10 ; G02B27/00 ; G02B27/28

Abstract:
A scanning projector for a display apparatus includes a first scanning reflector configured to steer a light beam in a first plane, a second scanning reflector configured to steer the light beam received from the first scanning reflector in a second plane, and beam relay optics configured to relay a first pupil defined at the first scanning reflector to a second pupil defined at the second scanning reflector, and to relay the second pupil to an output pupil of the scanning projector. The beam relay optics may include a concave reflector and a polarization beam splitter coupled to a scanning reflector in a triple pass configuration.
Public/Granted literature
- US20210109343A1 SCANNING PROJECTOR WITH MULTIPATH BEAM RELAY Public/Granted day:2021-04-15
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