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:
Oct. 02, 2007
Filed:
Nov. 02, 2001
Toru Shinzou, Sagamihara, JP;
Toru Shinzou, Sagamihara, JP;
Kabushiki Kaisha Kenwood, Tokyo, JP;
Abstract
A fine displacement detection device by sound or the like: which can easily align individual optical components; which disposes a light emitting element () and a light receiving element () on a substrate, emits light from the light emitting element () to a diaphragm (I) set at a position facing the substrate, receives light reflected from the diaphragm () by the light receiving element (), and detects as an electric signal the fine displacement of the diaphragm () by sound or the like; and which provides, on the optical paths of the substrate and the diaphragm (), a focusing element () that focuses an incidence light from the light emitting element () for leading to the diaphragm () and focuses a diverged/reflected light from the diaphragm () for leading to the light receiving element (), and a reflected light flux dividing element () that divides the diverged/reflected light focused by the focusing element () for leading to the light receiving element ().