Illuminating light source, scanner module employing the same, and image scanning apparatus employing the scanner module
AssigneeSamsung Electronics Co., Ltd.
InventorKyung-rok Kim
Life of this patent
Estimating the term…
Abstract
An illuminating light source, and a scanner module and an image scanning apparatus including the same. The illuminating light source includes: a vacuum tube have a cylindrical shape, is filled with a discharging gas, and has a light emitting portion disposed in a lengthwise direction thereof; a discharging electrode disposed upon the vacuum tube, and having a width that increases from a center portion to end portions thereof; and a fluorescent body disposed within the vacuum tube, to absorb first light beams emitted by the discharging gas and to emit second light beams having a longer wavelength than the first light beams, with the second light beams being illuminated through the light emitting portion.
Claims26
An illuminating light source, comprising:
- a cylindrical vacuum tube filled with a discharging gas, having opposing ends, and having a light emitting portion extending between the opposing ends;
- a first discharging electrode disposed upon the vacuum tube, having a center portion, and opposing end portions disposed at the opposing ends of the vacuum tube;
- and
- a fluorescent body disposed within the vacuum tube, to absorb first light beams emitted by the discharging gas and to emit second light beams having a longer wavelength than the first light beams through the light emitting portion,
- wherein a thickness of the first discharging electrode increases from the center portion to the end portions,
- wherein the first discharging electrode comprises a serpentine corrugation;
- and
- wherein the distance between serpentine corrugation loops decreases from center portion to the end portions.
An illuminating light source, comprising:
- a cylindrical vacuum tube filled with a discharging gas, having opposing ends, and having a light emitting portion extending between the opposing ends;
- a first discharging electrode disposed upon the vacuum tube, having a center portion, and opposing end portions disposed at the opposing ends of the vacuum tube;
- and
- a fluorescent body disposed within the vacuum tube, to absorb first light beams emitted by the discharging gas and to emit second light beams having a longer wavelength than the first light beams through the light emitting portion,
- wherein the first discharging electrode is corrugated and wherein a frequency of the corrugations varies along the first discharging electrode such that frequency of the corrugations at the end portions is greater than the frequency of the corrugations at the center portion to allow for more light to be emitted by the end portions;
- wherein the first discharging electrode corrugation takes the shape of a serpentine corrugation, such that the distance between serpentine corrugation loops decreases from center portion to the end portions.
Dependencies are inferred from the claim text.