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:
Sep. 24, 2002
Filed:
Jul. 12, 1999
Koji Fukumura, Osaka, JP;
Keyence Corporation, Osaka, JP;
Abstract
A head unit of a photo detector for irradiating a target area with detection light having a pencil of rays substantially shaped like a belt in transverse section and receiving light reflected in the target area. The head unit includes a belt-like-light generation lens having different light gathering functions relative to two directions orthogonal to each other in the transverse section of the pencil of rays for generating detection light substantially shaped like a belt, a light emission section for emitting the detection light from a first interface of the belt-like-light generation lens through a second interface of the belt-like-light generation lens to the target area, and a light reception section for receiving reflected light incident on the light reception section through the first interface of the belt-like-light generation lens from the second interface.