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:
Sep. 24, 2002
Filed:
Jan. 05, 2001
Kazunori Natsume, Shimizu, JP;
Masahiro Maeda, Shimizu, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
In a method of determining the shape of reflective surface of reflector in the structure in which the basic shape is a free-formed surface satisfying shape constraints or the like and in which reflective surface elements are assigned to an array of segments obtained by dividing the free-formed surface , evaluation and selection of the surface shape is carried out at two stages; i.e., evaluation and selection according to light incidence angles at the stage of creation of the free-formed surface and evaluation and selection according to light reflecting regions at the stage of creation of a reflective surface consisting of a plurality of reflective surface elements. This reduces nonuniformity of in-surface light distribution during on periods of a lamp, in the reflective surface obtained, and thus improves design efficiency thereof.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile