Title:
NEON GAS DISCHARGE LAMP FOR OPTICAL DEVICE
Document Type and Number:
Japanese Patent JPS5838447
Kind Code:
A
Abstract:
PURPOSE: To secure a high-efficient light source available for an optical device, by setting the outer diameter of a glass tube to the specified size and sealing up neon into the glass tube at a specified pressure value.
CONSTITUTION: A neon gas excellent in luminous efficacy for visible rays is sealed up into a glass tube for example of more than 20mm in outer diameter and 436mm in length, in which a filament coil electrode holding thermionic radiant substances at a pressure of more than 1 torr is sealed. With this, a neon gas discharge lamp for an optical device can be secured, which can exhibit high- efficiency at a rated lamp current of more than 0.2A.
Inventors:
NISHIKATSU TAKEO
ANZAI YOSHINORI
KAJIWARA TOSHIROU
KOBAYASHI GOROKU
MORIMOTO SHIYUNICHI
ANZAI YOSHINORI
KAJIWARA TOSHIROU
KOBAYASHI GOROKU
MORIMOTO SHIYUNICHI
Application Number:
JP13661181A
Publication Date:
March 05, 1983
Filing Date:
August 31, 1981
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H01J61/76; H01J61/16; (IPC1-7): H01J61/00
Attorney, Agent or Firm:
Shinichi Kusano