Method and apparatus for operating discharge lamp

Details Method and apparatus for operating discharge lamp Method and apparatus for operating discharge lamp

1998-09-28

2000-04-04

Philogene, Haissa

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

315326, 313631, 313635, H05B 4116, H01J 6130

Patent

active

060465484

ABSTRACT:
Upon generating arc discharge by inputting electric power which changes at a predetermined frequency to the discharge lamp horizontally disposed so as to operate the discharge lamp, the predetermined frequency is a frequency such that the arc discharge is excited substantially in a linear shape by acoustic resonance; and a value of the electric power to be input to the discharge lamp is set so that an input power value per unit inner volume of an arc tube of the discharge lamp falls within a predetermined range which is determined depending on a shape of the arc tube, thereby suppressing a strip-shaped adhesion of a sealed material of the arc tube to a tube wall in the vicinity of a center portion of the arc tube.

REFERENCES:
patent: 5436533 (1995-07-01), Fromm et al.
patent: 5689154 (1997-11-01), Barthelmes et al.
patent: 5773937 (1998-06-01), Miyazaki et al.

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