Invention Grant
- Patent Title: Virtual/augmented reality system having reverse angle diffraction grating
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Application No.: US15287637Application Date: 2016-10-06
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Publication No.: US10338391B2Publication Date: 2019-07-02
- Inventor: Ivan Yeoh , Hui-Chuan Cheng , Lionel Ernest Edwin , David Tinch , William Hudson Welch
- Applicant: Magic Leap, Inc.
- Applicant Address: US FL Plantation
- Assignee: Magic Leap, Inc.
- Current Assignee: Magic Leap, Inc.
- Current Assignee Address: US FL Plantation
- Agency: Vista IP Law Group LLP
- Main IPC: G02B27/01
- IPC: G02B27/01 ; F21V8/00 ; G02B26/10 ; G06T15/00 ; G06T19/00 ; G02B6/00 ; G06F3/01 ; G02B27/42

Abstract:
A display subsystem for a virtual image generation system comprises a planar waveguide apparatus, an optical fiber, at least one light source configured for emitting light from a distal end of the optical fiber, and a mechanical drive assembly to which the optical fiber is mounted as a fixed-free flexible cantilever. The drive assembly is configured for displacing a distal end of the optical fiber about a fulcrum in accordance with a scan pattern, such that the emitted light diverges from a longitudinal axis coincident with the fulcrum. The display subsystem further comprises an optical modulation apparatus configured for converging the light from the optical fiber towards the longitudinal axis, and an optical waveguide input apparatus configured for directing the light from the optical modulation apparatus down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to an end user.
Public/Granted literature
- US20170097507A1 VIRTUAL/AUGMENTED REALITY SYSTEM HAVING REVERSE ANGLE DIFFRACTION GRATING Public/Granted day:2017-04-06
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