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. 09, 2004
Filed:
Dec. 27, 2002
Ryuzo Nakano, Tokyo, JP;
Kouichi Kubo, Tokyo, JP;
Nidec Copal Corporation, Tokyo, JP;
Abstract
An optical range finder is provided with a projection unit for projecting luminous flux to an object located in an optical axis direction, a detection unit for receiving the luminous flux returned from the object, a holding frame housing the projection unit and the detection unit, and a support substrate on which the holding frame is supported. The holding frame has a partition wall for separating the detection unit and the projection unit from each other. An end of the partition wall is provided with a tip protruding from a bottom of the holding frame. In the support substrate, a groove is formed in a surface side which comes in contact with the bottom of the holding frame to be engaged with the tip of the partition wall. Light leaked from the projection unit through a thickness of the support substrate to the detection unit is shut off by a combination of the tip and the groove.