Title:
FLUORESCENT LAMP
Document Type and Number:
WIPO Patent Application WO/2012/026247
Kind Code:
A1
Abstract:
[Problem] To provide a structure, whereby vacuum-ultraviolet light of wavelength 185 nm is emitted efficiently, for a fluorescent lamp that emits ultraviolet light and is provided with: a light-emitting tube, comprising quartz glass, inside which a xenon-containing discharge gas is sealed; a pair of electrodes that are formed in the length direction of the light-emitting tube and face each other with a dielectric interposed therebetween; and a phosphor layer formed on the inside surface of the light-emitting tube. [Solution] The present invention is characterized in that: the phosphor layer formed on the inside surface of the light-emitting tube contains a neodymium-activated LaPO4 phosphor; and the neodymium concentration in said neodymium-activated LaPO4 phosphor is in the range 1-3 mol%.
Inventors:
TAGAWA YUKIHARU (JP)
Application Number:
PCT/JP2011/066521
Publication Date:
March 01, 2012
Filing Date:
July 21, 2011
Export Citation:
Assignee:
USHIO ELECTRIC INC (JP)
TAGAWA YUKIHARU (JP)
TAGAWA YUKIHARU (JP)
International Classes:
H01J65/00; C02F1/32; C09K11/81
Domestic Patent References:
| WO2006104081A1 | 2006-10-05 |
Foreign References:
| JP2005519438A | 2005-06-30 | |||
| JP2002216704A | 2002-08-02 | |||
| JP2007514736A | 2007-06-07 |
Attorney, Agent or Firm:
ISOHATA MASAO (JP)
Yasuo Isohata (JP)
Yasuo Isohata (JP)
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