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:
Jun. 25, 2019
Filed:
Mar. 24, 2015
Applicant:
Otsuka Electronics Co., Ltd., Osaka, JP;
Inventors:
Hisashi Shiraiwa, Koka, JP;
Hiroyuki Sano, Omihachiman, JP;
Assignee:
Otsuka Electronics Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 1/44 (2006.01); G01J 3/02 (2006.01); G01J 3/10 (2006.01); G01J 1/04 (2006.01); G01J 1/08 (2006.01); G01J 3/28 (2006.01); G01J 1/02 (2006.01);
U.S. Cl.
CPC ...
G01J 1/44 (2013.01); G01J 1/0295 (2013.01); G01J 1/0407 (2013.01); G01J 1/08 (2013.01); G01J 3/02 (2013.01); G01J 3/0297 (2013.01); G01J 3/10 (2013.01); G01J 3/28 (2013.01); G01J 2001/0481 (2013.01); G01J 2001/083 (2013.01); G01J 2001/086 (2013.01); G01J 2001/444 (2013.01); G01J 2003/2866 (2013.01); G01J 2003/2876 (2013.01);
Abstract
A reference light source device for calibration of a spectral radiance meter includes an integrating sphere having a radiance reference plane, which is an opening; and a plurality of first optical ports, which are formed apart from each other in an outer wall of the integrating sphere to allow light rays with equivalent wavelength characteristics to enter an interior of the integrating sphere.