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:
Feb. 24, 2009
Filed:
Sep. 05, 2007
Soichiro Mitsui, Kanagawa, JP;
Hideki Ito, Kanagawa, JP;
Soichiro Mitsui, Kanagawa, JP;
Hideki Ito, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A position detecting apparatus includes a first illuminating unit that radiates light onto a substrate in a direction substantially parallel to the front and the rear surfaces of the substrate from the direction of a lateral face of the substrate; a second illuminating unit that radiates light onto the front surface of the substrate, in a direction substantially perpendicular to the front surface of the substrate; an image pickup unit that takes an image of the substrate from a rear surface side thereof; and an edge-position detecting unit that detects an edge position of the substrate, based on a first image that is taken while the light is being radiated from the first illuminating unit and a second image that is taken while the light is being radiated from the second illuminating unit, respectively.