SHORT ARC HIGH-PRESSURE DISCHARGE LAMP

WIPO Patent Application WO/2013/021967

A1

Provided is a short arc high-pressure discharge lamp in which stability of the shape, vaporization resistance, and workability of the anode have been improved. The short arc high-pressure discharge lamp is provided with a discharge vessel (2), an anode (4) formed from a tungsten-based material that includes potassium, and a cathode (3), with the anode (4) including a functional surface region (4a) in which interaction between the anode (4) and an arc occurs and a bulk region (4b) adjacent to the functional surface region (4a). The short arc high-pressure discharge lamp is characterized by the presence of a rapid change in the crystal grain size of the tungsten-based material of the anode (4) between the functional surface region (4a) and the bulk region (4b) in a direction parallel to a vertical axis (Z) of the anode (4).

POHLER FRANK (AT)
ABENTHUNG PETER (AT)
WILL TOBIAS (AT)
WESEMANN INGMAR (AT)
KODAIRA HIROSHI (JP)
SERIZAWA IZUMI (JP)
HAYAKAWA TAKENORI (JP)
MAESHIMA MAKOTO (JP)

PCT/JP2012/069974

February 14, 2013

August 06, 2012

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PLANSEE SE (AT)
ORC MFG CO LTD (JP)
POHLER FRANK (AT)
ABENTHUNG PETER (AT)
WILL TOBIAS (AT)
WESEMANN INGMAR (AT)
KODAIRA HIROSHI (JP)
SERIZAWA IZUMI (JP)
HAYAKAWA TAKENORI (JP)
MAESHIMA MAKOTO (JP)

H01J61/073; H01J61/06; H01J61/88

JP2010514118A	2010-04-30
JPH11135011A	1999-05-21
JPS5550566A	1980-04-12

YAMAGUCHI Iwao et al. (JP)
Yamaguchi 巖 (JP)

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