Eric S Stratton

US Patent:

20200192087, Jun 18, 2020

Filed:

Jun 27, 2018

Appl. No.:

16/020125

Inventors:

- Cedar Rapids IA, US
James H. Stanley - Palo Alto CA, US
Eric P. Stratton - Portland OR, US
Ming Yu - Beaverton OR, US

International Classification:

G02B 27/00
G02B 17/08
G02B 27/30
G02B 27/01
F21V 8/00
G02B 5/32

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.