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:
May. 16, 2006
Filed:
Feb. 19, 2002
Toru Shinzou, Sagamihara, JP;
Yoshio Sakamoto, Hachiouji, JP;
Toru Shinzou, Sagamihara, JP;
Yoshio Sakamoto, Hachiouji, JP;
Kabushiki Kaisha Kenwood, Tokyo, JP;
Abstract
A displacement/quantity of light converter in which sensitivity to a micro displacement due to sound of a diaphragm, or the like, can be enhanced easily. In the displacement/quantity of light converter where a light emitting part () and a light receiving part () are disposed oppositely to a diaphragm (), light emitted from the light emitting part () and reflected off the diaphragm () is received at the light receiving part (), and a displacement of the diaphragm () is converted into an output from the light receiving part (), a concave diaphragm is used and the concave face is directed toward the light emitting part () and the light receiving part (). According to the arrangement, light emitted from the light emitting part () and reflected off the diaphragm () impinges efficiently on the light receiving part () in the form of focused light.