Metal halide discharge lamp having low color temperature and imp

Details Metal halide discharge lamp having low color temperature and imp Metal halide discharge lamp having low color temperature and imp

1989-04-12

1990-12-18

Wieder, Kenneth

Electric lamp and discharge devices

With temperature modifier

Double wall, jacket or casing for envelope

313641, H01J 6120, H01J 6134

Patent

active

049788841

ABSTRACT:
The high-pressure discharge lamp has an ionizable filling containing mercury, rare gas, dysprosium halide and a second halide chosen from the halides of Tl, Ce, Pr, Nd, Sm and Gd. The lamp has a comparatively low color temperature and a good color rendition, especially also of the color of the skin. The lamp may be used, for example, as a studio lamp for the illumination of indoor scenes.

REFERENCES:
patent: 3452238 (1969-06-01), Larson
patent: 3842307 (1974-10-01), Dobrusskin et al.
patent: 4808876 (1989-02-01), French et al.
patent: 4866342 (1989-09-01), Ramaiah et al.

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