The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 2017
Filed:
Sep. 30, 2011
Applicants:
Robert D. Brown, Lake Oswego, OR (US);
Kurt A. Stahl, Portland, OR (US);
Robert B. Wood, Beaverton, OR (US);
Lincoln J. Burns, Portland, OR (US);
Inventors:
Robert D. Brown, Lake Oswego, OR (US);
Kurt A. Stahl, Portland, OR (US);
Robert B. Wood, Beaverton, OR (US);
Lincoln J. Burns, Portland, OR (US);
Assignee:
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/32 (2006.01); G02B 6/28 (2006.01); G03H 1/02 (2006.01); G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
G02B 6/2848 (2013.01); G02B 27/0172 (2013.01); G03H 1/0248 (2013.01);
Abstract
A head up display include an image source, and a waveguide. The waveguide has a first diffraction grating and a first end and a second diffraction grating at a second end. The waveguide is positioned as a combiner and allows viewing of an outside scene and information from the image source. The first and second diffraction gratings are surface relief gratings having a high index of modulation.