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.

Date of Patent:
Jun. 30, 2020

Filed:

Jul. 13, 2016
Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventors:

Yusuke Kasai, Saitama, JP;

Hiroshi Kawanago, Utsunomiya, JP;

Takashi Seki, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/27 (2006.01); G01N 21/57 (2006.01); G01N 21/84 (2006.01); G01N 21/47 (2006.01); G01N 21/55 (2014.01);
U.S. Cl.
CPC ...
G01N 21/278 (2013.01); G01N 21/274 (2013.01); G01N 21/276 (2013.01); G01N 21/57 (2013.01); G01N 2021/4757 (2013.01); G01N 2021/556 (2013.01); G01N 2021/557 (2013.01); G01N 2021/575 (2013.01); G01N 2021/8427 (2013.01); G01N 2201/0221 (2013.01);
Abstract

A measuring apparatus that measures an optical characteristic of a surface in accordance with a standard selected from a plurality of standards is provided. The apparatus includes an illumination device configured to illuminate the surface with light from a light source, an imaging device configured to image the light source with reflected light from the surface illuminated by the illumination device, and a processor configured to process image data having number of pixels obtained by reducing number of pixels of the imaging device by a reduction rate to obtain the optical characteristic of the surface. The processor is configured to determine the reduction rate based on the selected standard.


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