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. 08, 1999
Filed:
May. 29, 1997
Mitsuo Fuke, Nara, JP;
Takashi Umehara, Osaka, JP;
Katsunori Kawabata, Osaka, JP;
Katsumi Horinishi, Hashimoto, JP;
West Electric Company, Ltd., Osaka, JP;
Abstract
In order to vary a light emission angle, a light source is moved so that its position relative to a reflector is varied. In one mode, by compulsively moving the light source to one end of a movement range of the light source, the one end is set as an original position. In another mode, after the light source is compulsively moved to the one end, by detecting that the light source has reached a position preset in the movement range while the light source is being moved to the other end of the movement range, a distance by which the light source is moved from the one end to the preset position is detected and stored as control information. The subsequent operation to move the light source to a desired control position is controlled based on the original position which is the one end or based on the control information.