Login| Sign Up| Help| Contact|

Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2012/026247
Kind Code:
[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%.

TAGAWA Yukiharu (1194 Sazuchi, Bessho-cho, Himeji-sh, Hyogo 24, 〒6710224, JP)
Application Number:
Publication Date:
March 01, 2012
Filing Date:
July 21, 2011
Export Citation:
Click for automatic bibliography generation   Help
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
Attorney, Agent or Firm:
ISOHATA Masao (Honcho Bldg, 4-5-14 Nihonbashi-Honcho, Chuo-k, Tokyo 23, 〒1030023, JP)
Download PDF: