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. 11, 2013
Filed:
Sep. 27, 2010
Applicant:
Ryuichi Sato, Sendai, JP;
Inventor:
Ryuichi Sato, Sendai, JP;
Assignee:
Canon Kabushiki Kaisha, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 11/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus for measuring a shape of a surface, comprises a measurement head which measures a direction of a normal from the surface to a reference point by detecting test light obtained when light that passes through the reference point is emitted, is reflected by the surface, and returns to the reference point, a scanning mechanism which scans the measurement head, and a processor which calculates the shape of the surface based on the direction of the normal measured using the measurement head and a position of the reference point.