Lighting system

H - Electricity – 01 – J

Patent

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Details

H01J 7/08 (2006.01) H01J 61/18 (2006.01)

Patent

CA 2243737

Lighting system, comprising a mercury-free metal halide lamp with a light yield of at least 75 lm/W and a colour rendition index of at least 75 and an electronic ballast, the electronic ballast impressing a square-wave power supply on the lamp and keeping the power constant. The filling comprises the following components: .cndot. a buffer gas which also acts as starting gas to start the lamp, .cndot. a voltage gradient generator, comprising at least one metal halide which vaporizes readily and which is chiefly (by more than 50%) responsible for generating a voltage gradient which corresponds approximately to that of mercury, and .cndot. a light generator comprising one metal and/or one metal halide.

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