Title:
【発明の名称】高圧ナトリウム放電ランプ
Document Type and Number:
Japanese Patent JP3014105
Kind Code:
B2
Abstract:
A high-pressure sodium discharge lamp provided with a ceramic discharge vessel (1), in which sodium, mercury and xenon are present, of which the xenon is at a pressure at 300 K of at least 26.7 kPa. The sodium and the mercury are present in a weight ratio Na/Hg which is at least 0.075 and at most 0.125. The lamp generates in the operating condition a spectrum, in which at a wavelength of 589.3 nm a self-absorption band is present, which is limited by spectral flanks each flank having a respective maximum. There is a wavelength difference DELTA lambda of at least 3.5 nm and at most 6 nm between the maxima.
Inventors:
Cornelis Adrianis Johannes Jacobs
Alde Hondas Wouterace Janssen
Jan Alhons Julia Stoffels
Alde Hondas Wouterace Janssen
Jan Alhons Julia Stoffels
Application Number:
JP23305189A
Publication Date:
February 28, 2000
Filing Date:
September 11, 1989
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
H01J61/22; H01J61/82; H01J61/16; H01J61/88; (IPC1-7): H01J61/88; H01J61/16
Domestic Patent References:
| JP56102062A | ||||
| JP56102055A | ||||
| JP57152662A | ||||
| JP55161360A | ||||
| JP53129468A | ||||
| JP5795763U |
Attorney, Agent or Firm:
Akihide Sugimura (1 outside)