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:
Nov. 23, 2004
Filed:
Oct. 29, 2002
Hideki Uchida, Shizuoka, JP;
Makoto Izawa, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
In a headlamp comprising low beam irradiating, there are provided main beam irradiating means, light distribution switching means for switching a low beam and a main beam, abnormality detecting means for detecting an abnormal situation in which a proper low beam cannot be formed, and optical axis tilting means for vertically tilting an optical axis of at least a main beam, and the abnormality detecting means detects an abnormality, a light distribution is switched into a main beam by the light distribution switching and the optical axis of the main beam is turned downward by the optical axis tilting means. When a proper low beam cannot be formed, a main beam having a larger light amount is generally turned on to maintain a visibility in of a vehicle and the optical axis of the main beam is turned downward such that glare light is not generated.