Flat-surface fluorescent lamp
AssigneeFuji Photo Film Co., Ltd.
InventorsHideyuki Kokubo, Tomoko Taki
Life of this patent
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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.
Claims12
A fluorescent lamp comprising:
- an anode panel having a reflection layer and a fluorescent layer arranged on an inner surface thereof;
- a cathode panel disposed on a plane different from said anode panel, said cathode panel constituting a sealed body together with said anode panel;
- a filament disposed inside said cathode panel;
- a grid electrode disposed between said filament and said anode panel;
- and
- a transparent light-output panel disposed on another plane different from said anode panel and said cathode panel, a light reflected by said reflection layer radiating from said light-output panel toward the outside of said sealed body.
Dependencies are inferred from the claim text.