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:
Dec. 22, 2015
Filed:
Apr. 20, 2012
Atsuyuki Yamamoto, Kanagawa, JP;
Ryo Kawamura, Osaka, JP;
Atsuyuki Yamamoto, Kanagawa, JP;
Ryo Kawamura, Osaka, JP;
Abstract
A light projection device capable of irradiating light only onto an object includes: a light projector in which an object and a back surface of the object are taken as a projectable range; a shadow region detector that detects a shadow that occurs on the back surface of the object by projection light; and a controller that corrects a shadow region so that a projection region of the light projector and the shadow region can coincide with each other on the back surface of the object, sets the corrected shadow region as a light projection range and sets, as a non-light projection range, a region other than the shadow region, and sets projection light projected onto the set light projection range, wherein the light projector projects the projection light onto a range where the object is present by projecting the set projection light onto the set light projection range.