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:
Sep. 14, 2021
Filed:
Apr. 10, 2017
Applicant:
Bae Systems Plc, London, GB;
Inventors:
James Raymond Leighton, Rochester, GB;
Michael David Simmonds, Rochester, GB;
Rory Thomas Alexander Mills, Rochester, GB;
Assignee:
BAE SYSTEMS PLC, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 27/01 (2006.01); G02B 27/00 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02B 27/0101 (2013.01); G02B 6/0025 (2013.01); G02B 6/0036 (2013.01); G02B 6/0055 (2013.01); G02B 6/0065 (2013.01); G02B 27/0081 (2013.01); G02B 27/0172 (2013.01); G02B 2027/011 (2013.01); G02B 2027/0125 (2013.01);
Abstract
A waveguide structure for a head up display in which a reflective output coupling structure is formed of a separate, but connected, component to a main waveguide. Light is coupled from the main waveguide to the output coupling structure by evanescent wave coupling. In a method of manufacture for such a waveguide the output coupling structure is attached to the main waveguide using an optical feedback technique.