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. 28, 2020
Filed:
Nov. 29, 2018
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Hitoshi Furukawa, Suntou-gun, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 1/00 (2006.01); G01J 3/02 (2006.01); G01J 3/50 (2006.01); H04N 1/40 (2006.01); B41J 2/205 (2006.01);
U.S. Cl.
CPC ...
H04N 1/00023 (2013.01); G01J 3/0297 (2013.01); G01J 3/502 (2013.01); H04N 1/00034 (2013.01); B41J 2/2054 (2013.01); B41J 2/2056 (2013.01); H04N 1/40081 (2013.01); H04N 1/40087 (2013.01);
Abstract
The spectral colorimetry apparatus includes an LED, a diffraction grating; a line sensor that has multiple pixels and that receives light dispersed by the diffraction grating at the multiple pixels for respective wavelengths of the dispersed light and outputs voltages according to the intensity of the received light; and a sensor CPU that calculates spectral reflectivity of an object based on the intensity of light reflected from the object. The sensor CPU varies, with the multiple pixels, the number of detection times of detecting the light reflected from the object at each pixel.