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. 24, 2019
Filed:
Jan. 06, 2014
Applicant:
Bae Systems Plc, London, GB;
Inventors:
Mohmed Salim Valera, Rochester-Kent, GB;
James Raymond Leighton, Rochester-Kent, GB;
Assignee:
BAE SYSTEMS plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/18 (2006.01);
U.S. Cl.
CPC ...
G02B 5/1866 (2013.01); G02B 5/1828 (2013.01); G02B 5/1857 (2013.01);
Abstract
A diffraction gratingincludes a surfacehaving groovestherein, each grooveproviding a diffracting surface for light incident upon the diffracting surface. The groovesare separated from each other by landsupon the surface. The landsare of predetermined varying width, whereby the diffractive efficiency of the gratingvaries across the extent of the grating