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:
Jun. 18, 2002
Filed:
Mar. 16, 2000
Denso Corporation, Kariya, JP;
Abstract
An infrared rays detection apparatus including an optical window member having a characteristic that scatters noise light, which is capable of reducing an influence of noise light with a simple structure. An infrared rays detection apparatus includes: a condenser lens; an infrared rays image sensor made up of plural thermal detection elements; and a signal detection/process circuit (SDP circuit). The image sensor detects a thermal distribution of a predetermined area condensed by the condenser lens in a passenger room. The SDP circuit makes a thermal image data based on the thermal distribution detected by the image sensor. Various types of system control circuits control each of the vehicular system as described later based on the thermal image data provided from the SDP circuit. The condenser lens is formed so that noise light such as visible light is scattered thereby and that infrared rays is transmitted therethrough to the image sensor. Furthermore, when all temperatures detected by all of the thermal detection elements uniformly rise, the SDP circuit determines that scattered visible light is entered and than makes obtained data invalid.