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:
Mar. 11, 2003
Filed:
Oct. 18, 2001
Koichi Toyoda, Iwata-gun, JP;
Minebea Co., Ltd., Nagano-ken, JP;
Abstract
There is provided a spread illuminating apparatus ensuring excellent light utilization efficiency without deteriorating workability in assembling. A first extension plate and a second extension plate, which are bent so as to have a spring force working toward each other, are provided on an upper opposing plate of a frame. A spot-like light source and a light conductive member are pressed by means of the spring force of the above extension plates. A clearance between the spot-like light source and the first extension plate, and a clearance between the light conductive member and the second extension plate are eliminated, whereby generation of play can be prevented resulting in an improvement of workability in assembling. Also, the spot-like light source and the light conductive member contact tightly with each other eliminating a clearance therebetween so as to improve light utilization efficiency. The frame and further the whole apparatus can be compact while maintaining a high accuracy.