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:
Mar. 14, 2006
Filed:
Aug. 06, 2003
Hisakazu Sugiyama, Nara, JP;
Akifumi Yamaguchi, Kashiba, JP;
Hisakazu Sugiyama, Nara, JP;
Akifumi Yamaguchi, Kashiba, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An optical moving information measuring apparatus comprising: light generating means for forming two light spots at a predetermined interval, on a surface of a moving object to be measured providing at least a light emitting source, a collimator lens for collimating light emitted from the light emitting source and an objective lens for irradiating the light passed through the collimator lens to the surface of the moving object; a beam splitter for rotating an optical axis of each of the two types of light reflected from the light spots and passed through the objective lens by a predetermined angle; a light receiving lens through which the two types of light from the beam splitter pass; a light receiving element for receiving the two types of light passed through the light receiving lens; and a processing part for calculating a time delay of one from the other of two types of output signals from the light receiving element obtained by movement of the moving object in order to obtain moving information of the moving object.