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:
Oct. 19, 2004
Filed:
Sep. 25, 2002
Hideyuki Kokubo, Saitama, JP;
Tomoko Taki, Saitama, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A fluorescent lamp comprises a cathode panel, an anode panel and a light-output panel. A filament and grid electrodes are attached to the cathode panel. The anode panel is provided with a reflection layer and a fluorescent layer. The light-output panel is made of a transparent glass plate and is disposed on a plane different from the cathode panel and the anode panel. An electron beam emitted from the filament collides with the fluorescent layer. Upon this, the fluorescent layer is excited to emit light. The emitted light is reflected by the reflection layer to radiate from the light-output panel toward the outside of the fluorescent lamp. At this time, the light does not pass through the grid electrodes and the filament so that optical unevenness is prevented from occurring.