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Patent Searching and Data


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 (1194 Sazuchi, Bessho-cho, Himeji-sh, Hyogo 24, 〒6710224, JP)
Application Number:
JP2011/066521
Publication Date:
March 01, 2012
Filing Date:
July 21, 2011
Export Citation:
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Assignee:
USHIO DENKI KABUSHIKI KAISHA (2-6-1, Ote-machi Chiyoda-k, Tokyo 50, 〒1008150, JP)
ウシオ電機株式会社 (〒50 東京都千代田区大手町2-6-1 Tokyo, 〒1008150, JP)
International Classes:
H01J65/00; C02F1/32; C09K11/81
Domestic Patent References:
2006-10-05
Foreign References:
JP2005519438A2005-06-30
JP2002216704A2002-08-02
JP2007514736A2007-06-07
Attorney, Agent or Firm:
ISOHATA Masao (Honcho Bldg, 4-5-14 Nihonbashi-Honcho, Chuo-k, Tokyo 23, 〒1030023, JP)
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Claims: