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. 20, 2016
Filed:
Mar. 07, 2014
Applicant:
The Technology Partnership Plc, Royston, Hertfordshire, GB;
Inventors:
Neil Griffin, Royston, GB;
Roger Clarke, Royston, GB;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/02 (2006.01); G03B 21/62 (2014.01); G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
G02B 5/0236 (2013.01); G02B 5/0289 (2013.01); G02B 5/0294 (2013.01); G03B 21/62 (2013.01); G02B 2027/0194 (2013.01);
Abstract
An optical device comprises an optical diffuser structure embedded between media of substantially the same optical refractive index. The structure comprises a partially reflective optical coating at the interface between the two media. The partially reflective optical coating comprises a relief profile such that, in use, the optical diffuser structure diffuses light in reflection from the partially reflective optical coating and delivers substantially no optical deflection in transmission.