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. 20, 2021
Filed:
Mar. 01, 2018
Applicant:
Signify Holding B.v., Eindhoven, NL;
Inventor:
Oliver Dross, Waalre, NL;
Assignee:
Signify Holding B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 5/04 (2006.01); F21V 7/00 (2006.01); F21V 13/04 (2006.01); G02B 27/30 (2006.01); G02B 3/08 (2006.01);
U.S. Cl.
CPC ...
F21V 5/045 (2013.01); F21V 7/0091 (2013.01); F21V 13/04 (2013.01); G02B 3/08 (2013.01); G02B 27/30 (2013.01);
Abstract
The invention provides a collimator comprising a Fresnel lens comprising a refractive lens portion and a toothed total internal reflection portion. A light blocking element is at least between the lens portion and the light source. A portion of a light source output is blocked from reaching at least one region of the inner lens portion. At some or all parts of the lens portion, light does not reach those parts from the full area of the light source. This partial light blocking means the whole shape of the light source is not projected onto all of the lens portion, and the halo effect is reduced or eliminated.