Patent ID: 7969083
Filing Date: 2011-06-28
Classification: H01J

Abstract:
1. A discharge lamp, comprising: a sealed vessel having an inner surface; at least an illuminating gas filled within the sealed vessel; and a fluorescent layer coated on the inner surface; wherein composition of the fluorescent layer is determined according to a colored light emitted by the illuminating gas during a discharge process within the sealed vessel, such that the colored light is converted into a visible light after passing through the fluorescent layer, wherein the colored light is selected from the group consisting of a combination of red light and green light; a combination of green light and blue light; and a combination of blue light and red light, and wherein when the colored light is a combination of a red light and a green light, the composition of the fluorescent layer comprises blue fluorescent powder without red fluorescent powder and green fluorescent powder; wherein when the colored light is a combination of a green light and a blue light, the composition of the fluorescent layer comprises red fluorescent powder without green fluorescent powder and blue fluorescent powder; and wherein when the colored light is a combination of a red light and a blue light, the composition of the fluorescent layer comprises green fluorescent powder without red fluorescent powder and blue fluorescent powder.