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. 22, 2015
Filed:
Dec. 22, 2014
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Hiroshi Kawanago, Utsunomiya, JP;
Assignee:
CANON KABUSHIKI KAISHA, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/25 (2006.01); G01J 3/42 (2006.01); G01J 3/10 (2006.01); G01J 3/46 (2006.01); G01J 3/50 (2006.01);
U.S. Cl.
CPC ...
G01N 21/251 (2013.01); G01J 3/10 (2013.01); G01J 3/42 (2013.01); G01J 3/465 (2013.01); G01J 3/502 (2013.01); G01N 2201/062 (2013.01); G01N 2201/0686 (2013.01);
Abstract
The spectrophotometer of the present invention measures a spectral reflectance of an object to be measured to thereby determine a color value of the object to be measured based on a color-matching function of an XYZ color system and the spectral reflectance. The spectrophotometer includes an irradiation unit configured to irradiate the object to be measured with light having a spectral intensity distribution in which a relative intensity at a wavelength at which the value of z reaches its peak in the color-matching function is equal to or greater than 0.5.