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. 16, 1994
Filed:
Jun. 01, 1993
Masaaki Ishikawa, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A projection head lamp for vehicles comprises a substantially elliptical reflector 14, a light source located at the first focal point of the reflector 14, a projection lens 16 disposed in front of the reflector 14, and a shade 20 located at a position near to the second focal point and the focal point of the projection lens 16, the shade 20 intercepting light beams going from the reflector 14 toward the projection lens 16. The shade 20 may be turned about the horizontal shaft. To adjust the beam distribution pattern, the shade 20 is turned. The shade 20 consists of left and right shades 21 and 22, which are separated and horizontally extended when seen from the point right under the optical axis. The shades 21 and 22 have pairs of shade plates 212 and 213, and 222 and 223, of which the extended parts extending along the horizontal shaft overlap with one another.