- Patent Title: Backlight, multiview display and method having a grating spreader
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Application No.: US17225963Application Date: 2021-04-08
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Publication No.: US11378729B2Publication Date: 2022-07-05
- Inventor: David A. Fattal , Joseph D. Lowney
- Applicant: LEIA INC.
- Applicant Address: US CA Menlo Park
- Assignee: LEIA INC.
- Current Assignee: LEIA INC.
- Current Assignee Address: US CA Menlo Park
- Agent J. Michael Johnson
- Main IPC: F21V8/00
- IPC: F21V8/00

Abstract:
A backlight and a multiview display employ a light guide having angle-preserving scattering feature and a grating spreader. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The grating spreader includes a diffraction grating and is configured to convert light provided by a light source into spatio-angularly homogenous light to be guided as the guided light. The multiview display includes an array of light valves as well as the angle-preserving scattering feature that includes a multibeam element having a size that is comparable to a size of a light valve of the light valve array.
Public/Granted literature
- US20210223454A1 BACKLIGHT, MULTIVIEW DISPLAY AND METHOD HAVING A GRATING SPREADER Public/Granted day:2021-07-22
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