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. 08, 2011
Filed:
Jun. 13, 2008
Koichi Goto, Kariya, JP;
Koichi Goto, Kariya, JP;
Denson Corporation, Kariya, JP;
Abstract
An illuminance sensor for detecting brightness of outside a vehicle having a windshield includes first and second light receiving elements and a light emitting element for emitting light to the windshield. The first light receiving element outputs a first signal corresponding to outside light. The light emitted from the light emitting element is reflected at an outside surface of the windshield. The second light receiving element outputs a second signal corresponding to the reflected light. The outside light passes a first region of the windshield through which the light emitted from the light emitting element passes or a second region of the windshield through which the reflected light passes. The first signal is corrected based on the second signal to detect the brightness.