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. 11, 2007
Filed:
Feb. 10, 2005
Shinichi Niwa, Iwata-gun, JP;
Toshiaki Asakawa, Iwata-gun, JP;
Shigeyuki Adachi, Iwata-gun, JP;
Kuniyuki Takao, Iwata-gun, JP;
Shinichi Niwa, Iwata-gun, JP;
Toshiaki Asakawa, Iwata-gun, JP;
Shigeyuki Adachi, Iwata-gun, JP;
Kuniyuki Takao, Iwata-gun, JP;
Minebea Co., Ltd., Kitasaku-gun, JP;
Abstract
In a color wheel comprising a plurality of color filter segments arranged so as to form a disk and a support member fixed to the color filter segments, the color filter segments are each outlined only by a circular arc and two straight lines passing through the center of the disk. Consequently, each of the color filter segments is prepared by cutting the material only to the circular arc and the two straight lines, thereby simplifying the production process. And, the support member can be duly and surely positioned such that the center of the support member is set to coincide with the intersecting point of the two straight lines. Thus, the positional accuracy, the component cost reduction, and the production cost reduction can be achieved at the same time.