Harness, Dickey & Pierce, P.L.C.
Mercury lamp, lamp unit, method for producing mercury lamp and electric lamp
The present invention provides a high-pressure discharge lamp 100 including a luminous bulb 10 enclosing at least a rare gas and halogen in the bulb and made substantially of quartz glass; and an electrode 12 made substantially of tungsten and disposed in the luminous bulb. The mole number of the halogen is larger than the sum of the total mole number of metal elements (except the tungsten element and the mercury element) that have the property of bonding to the halogen and are present in the luminous bulb 10 and the mole number of the tungsten present in the luminous bulb by evaporation from the electrode 12 during lamp operation.
Matsushita Electric Industrial Co., Ltd.
H H H H Y H H
H01J H01J H01J H01J Y02B H01J H01K
inventional inventional inventional inventional additional inventional inventional
Tomoyuki Makoto Tsuyoshi Toshio Mamoru Yoshiki Yasuo Makoto
Seki Horiuchi Ichibakase Mori Takeda Kitahara Takeuchi Kai