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Xenon short-arc lamp: Difference between revisions
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When using larger lamps, precautions must be taken to prevent [[film damage|heat damage]] to the film. The [[reflector]] should be a dichroic mirror, and a [[heat shield]] should be installed to filter out UV light. When running 35mm, the projector should be equipped with a water-cooled gate for lamps exceeding 3kW. Regulating heat is even more important when running 16mm, because the light is focused on a smaller surface area. Film can also be damaged by a lamp that is misaligned, creating a hotspot that blisters one portion of the frame. | When using larger lamps, precautions must be taken to prevent [[film damage|heat damage]] to the film. The [[reflector]] should be a dichroic mirror, and a [[heat shield]] should be installed to filter out UV light. When running 35mm, the projector should be equipped with a water-cooled gate for lamps exceeding 3kW. Regulating heat is even more important when running 16mm, because the light is focused on a smaller surface area. Film can also be damaged by a lamp that is misaligned, creating a hotspot that blisters one portion of the frame. | ||
<gallery widths=300px heights=300px mode=packed>> | |||
File:Xenon lamp in shield.jpg|A 1.2kW Ushio xenon lamp in its shield. | |||
File:Xenon lamp close up.JPG|This lamp was removed at the end of its warranty. There is visible wear on the cathode. | |||
</gallery> | |||
==Lamp Alignment== | ==Lamp Alignment== | ||