| 简介 |
A high-pressure mercury lamp including electrode assemblies and a discharge vessel (23) that is composed of : a main tube part (15) having a discharge space (13) inside; and a sealing part (17) connected to the main tube part. The electrode assemblies extend into the discharge space from and are hermetically sealed with the sealing part such that their tips face each other in the discharge space. The discharge space (13) is filled with mercury as light-emitting material, rare gas such as xenon, and halogen gas for halogen cycle. An electrode assembly is composed of an electrode part (27a), a metal foil (29a), and an external lead. The base part of an electrode inside the discharge space is provided with a liquid collecting coil (43) for holding mercury that gathers around the base part during a cooling period while lighting is off. |
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