Single ended high intensity discharge lamp with a specific...

H - Electricity – 01 – J

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Details

313/10, 313/18,

H01J 61/30 (2006.01) H01J 61/52 (2006.01) H01J 61/82 (2006.01)

Patent

CA 1305996

Abstract of the Disclosure A high intensity discharge lamp includes an envelope formed of vitreous high temperature resistant material, and a pair of electrodes each having a metal rod and an arc supporting electrode, each of the metal rods being sealed at one end of the envelope. The lamp further includes a portion for adjusting the temperature at the wall of the envelope adjacent to the arc support- ing rods, to minimize the differences in the wall tem- perature under different lighting postures of the lamp, whereby the luminous efficiency of the lamp is substan- tially independent of the lighting postures of the lamp.

569220

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