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:
Nov. 25, 2014
Filed:
Jul. 01, 2010
Applicant:
Valtteri Kalima, Joensuu, FI;
Inventor:
Valtteri Kalima, Joensuu, FI;
Assignee:
Nanocomp Oy Ltd, Lehmo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 9/00 (2006.01);
U.S. Cl.
CPC ...
F21V 9/00 (2013.01);
Abstract
A transmission type optical element () comprises a surface relief micro-grating () for guiding light () propagating through the optical element. According to the present invention, at least a portion () of the thickness of the optical element () is formed of a colored material () so as to make the optical element colored.