Invention Grant
- Patent Title: Turning light pipe for a pupil expansion system and method
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Application No.: US16020125Application Date: 2018-06-27
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Publication No.: US10698203B1Publication Date: 2020-06-30
- Inventor: Robert D. Brown , James H. Stanley , Eric P. Stratton , Ming Yu
- Applicant: Rockwell Collins, Inc.
- Applicant Address: US IA Cedar Rapids
- Assignee: Rockwell Collins, Inc.
- Current Assignee: Rockwell Collins, Inc.
- Current Assignee Address: US IA Cedar Rapids
- Agent Donna P. Suchy
- Main IPC: G02B27/00
- IPC: G02B27/00 ; F21V8/00 ; G02B27/01 ; G02B27/30 ; G02B5/32 ; G02B17/08

Abstract:
A display system includes a light pipe including elongated surfaces. The light pipe is configured to expand the image in a first direction through one of the elongated surfaces. The display also includes a waveguide including an output grating, a first surface, a second surface, and a side surface. The first surface and the second surface have a larger area than the side surface, the output grating being configured to provide the image expanded in a second direction. The second direction is different than the first direction. The image enters the waveguide from the one of the elongated surfaces.
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