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. 05, 2013
Filed:
Dec. 03, 2009
Takeshi Ogihara, Fujiyoshida, JP;
Daisaku Okuwaki, Fujiyoshida, JP;
Makoto Yasuhara, Yamanashi-ken, JP;
Taku Kumasaka, Tsuru, JP;
Takeshi Ogihara, Fujiyoshida, JP;
Daisaku Okuwaki, Fujiyoshida, JP;
Makoto Yasuhara, Yamanashi-ken, JP;
Taku Kumasaka, Tsuru, JP;
Citizen Electronics Co., Ltd., Yamanashi-ken, JP;
Citizen Holdings Co., Ltd., Tokyo, JP;
Abstract
A planar light-emitting device enabling reduction in the deflection of a sheet-shaped light-diffusing element includes a reflector having an upper surface serving as a light-reflecting surface, a partition provided on the reflector to extend upward to form a plurality of enclosed spaces over the upper surface of the reflector, light sources disposed in the enclosed spaces, respectively, and at least one sheet-shaped light-diffusing element supported on the upper edges of the partition to transmit and diffuse light from the light sources upward. The side surfaces of the partition that define the enclosed spaces are light-reflecting surfaces.