High pressure discharge bulb

Details High pressure discharge bulb High pressure discharge bulb

H - Electricity

01

J

H01J 61/30 (2006.01) H01J 61/36 (2006.01) H01J 61/82 (2006.01)

Patent

CA 2213189

The invention concerns a high pressure discharge bulb. Such bulbs involve a two-sided sealed bulb with and without an outer bulb. The bulb is sealed by a pinch on at least one side. It generally has a discharge vessel made of quartz. These bulbs particularly comprise metal halide bulbs, which have a metal halide filling in addition to mercury, but they also include mercury high pressure discharge bulbs or xenon high pressure discharge bulbs. The bulbs are used preferably for optical systems, particularly for photo-optical purposes, for example, in headlights, overhead projectors, and decorative lighting devices. They particularly find application in lighting systems for the stage, film and television. Typical lamp powers are 400 to 2000 W. A discharge lamp pinched on both sides has pinches (4) in which the ratio of the total width of each wide side is smaller than or equal to 2.2 times the thickness of the wide side. Tube pieces (13) carrying the base sleeves (15) are shaped on the outer ends of the pinches. Fig. 2

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