Metal halide high pressure discharge lamp

Details Metal halide high pressure discharge lamp Metal halide high pressure discharge lamp

H - Electricity

01

J

H01J 61/12 (2006.01)

Patent

CA 2549621

In the metal halide high-pressure discharge lamp for stage, film and television lighting systems and for projection technology and effect lighting, the discharge vessel contains dysprosium and cesium as fill metals for the metal halides. Optimum results for dimmability, arc instability and color rendering are achieved if the fill additionally includes 0.12 to 3.8 µmol of vanadium and if appropriate 0.05 to 1.0 µmol of zirconium per ml of vessel volume. These metals achieve improved color rendering, in particular red rendering, with an Ra of from 70 to 95 and an R9 of from 45 to 90.

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