Arc discharge lamp with improved starting capabilities,...

Details Arc discharge lamp with improved starting capabilities,... Arc discharge lamp with improved starting capabilities,...

H - Electricity

01

J

313/10, 315/49

H01J 61/54 (2006.01) H01J 61/30 (2006.01) H01J 61/82 (2006.01)

Patent

CA 1205119

ABSTRACT A line-of-sight arched arc tube of an arc discharge lamp, e.g., a metal halide arc discharge lamp for horizontal operation having an arched upper wall to accommodate the bowing of the arc discharge during full temperature and pressure operation of the lamp and a lower wall of lesser curvature to accommodate the arc discharge during lamp start and warm-up. The curvature of the lower wall is such that there is a straight line-of-sight between the primary electrodes without being impeded by the lower wall of the arc tube and such that temperature profiles over the body of the arc tube are optimized during full temperature and pressure operation of the lamp.

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