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:
Aug. 11, 1992
Filed:
Apr. 23, 1991
Syoji Kobayashi, Shizuoka, JP;
Michihiko Hayakawa, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A variable light distribution type headlamp which provides an optimum irradiated beam pattern under all driving conditions. The headlamp includes a projector lamp, a fixed lens, and a movable lens disposed on the optical axis of said projector lamp forward of said projector lamp. The movable lens is a condensing lens, and the fixed lens being a cylindrical concave lens. The focal length and a range of movement of the movable lens are such that front focal points of the movable and fixed lenses coincide when both lenses are close to each other. A lens drive mechanism controls the position of the movable lens in both X and Y directions so as to respectively control the amount of beam diffusion and beam direction in accordance with the vehicle speed and steering direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile