High-voltage discharge lamp with cylindrical member to mitigate thermal stress
AssigneeNEC Corporation
InventorsKazuhisa Nishida, Yasushi Aoki
Life of this patent
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Abstract
A high-voltage discharge lamp has a bulb made of quartz glass, a pair of electrodes and molybdenum foils, wherein the pair of electrodes are arranged so as to oppose each other and are joined to respective ones of the molybdenum foils, and the bulb and molybdenum foils are hermetically sealed at seal portions of the bulb. The joints between the pair of electrodes and the respective molybdenum foils are covered by cylindrical members having slits on an outer surface and/or an inner surface thereof.
Claims13
A high-voltage discharge lamp comprising:
- a bulb made of quartz glass and having seal portions;
- a pair of opposing electrodes;
- molybdenum foils joined to respective ones of said opposing electrodes;
- and
- cylindrical members covering joints in the seal portions, as well as the vicinities thereof, between said molybdenum foils and respective ones of said opposing electrodes, said cylindrical members having slits formed on at least one of an outer surface and an inner surface thereof.
- said opposing electrodes, said molybdenum foils and said cylindrical members being hermetically sealed within said bulb at the seal portions thereof.
A high-voltage discharge lamp comprising:
- a bulb made of quartz glass and having seal portions;
- a pair of opposing electrodes;
- molybdenum foils joined to respective ones of said opposing electrodes;
- and
- mesh members covering joints in the seal portions, as well as the vicinities thereof, between said molybdenum foils and respective ones of said opposing electrodes,
- said opposing electrodes, said molybdenum foils and said mesh members being hermetically sealed within said bulb at the seal portions thereof.
A high-voltage discharge lamp comprising:
- a bulb made of quartz glass and having seal portions;
- a pair of opposing electrodes;
- molybdenum foils joined to respective ones of said opposing electrodes;
- and
- cylindrical members covering joints in the seal portions, as well as the vicinities thereof, between said molybdenum foils and respective ones of said opposing electrodes, said cylindrical members having slits on an inner surface thereof,
- said opposing electrodes, said molybdenum foils and said cylindrical members being hermetically sealed within said bulb at the seal portions thereof.
Dependencies are inferred from the claim text.