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. 22, 1991
Filed:
Apr. 03, 1991
Syoji Kobayashi, Shizuoka, JP;
Michihiko Hayakawa, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A variable distribution type automotive headlamp employing a bulb of a single-filament type positioned on the optical axis of a reflector. The reflector is constituted by a main reflecting surface having a focal point substantially at the position of the bulb and a pair of subsidiary reflecting sources provided on the main reflecting surface so as to be left-and-right symmetrical with respect to the optical axis. Both the subsidiary reflecting mirror surfaces are opposed to each other so that the optical axis of each of the subsidiary reflecting mirror surfaces is inclined relative to the optical axis of the main reflecting surface within a horizontal plane and within a range of from 45 to 80 degrees. The distance between the optical axis of the main reflecting surface and each of the subsidiary reflecting surfaces is made longer than that between the center of the main reflecting surface and the focal point thereof. At least one of a pair of movable mirrors provided in a lamp chamber so as to deflectively reflect light reflected from the subsidiary reflecting surfaces substantially parallel to the optical axis is pivoted so that its angle of inclination can be changed by a movable-mirror driving mechanism in a horizontal section or in a vertical section.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile