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:
Dec. 16, 2014
Filed:
Nov. 09, 2012
Applicant:
Iwasaki Electric Co., Ltd., Tokyo, JP;
Inventors:
Daisuke Ogawa, Gyoda, JP;
Kentarou Oohashi, Gyoda, JP;
Kazuyoshi Yamada, Gyoda, JP;
Katsumi Kimura, Gyoda, JP;
Assignee:
Iwasaki Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 9/00 (2006.01); F21S 8/00 (2006.01); G02B 5/20 (2006.01); G02B 5/28 (2006.01); G02B 27/00 (2006.01); G01J 1/08 (2006.01);
U.S. Cl.
CPC ...
F21V 9/00 (2013.01); F21S 8/006 (2013.01); G02B 5/205 (2013.01); G02B 5/28 (2013.01); G02B 27/0018 (2013.01); G01J 1/08 (2013.01);
Abstract
One spectrum correction filter that changes a spectral characteristic of emission light from the light source, at least one neutral density filter disposed on the same optical axis of the spectrum correction filter, wherein the at least one spectrum correction filter and/or the at least one neutral density filter is tilted so that a travel direction of reflection light reflected from the at least one spectrum correction filter is deviated from the optical axis.