High-intensity discharge lamp with pleated ends

Details High-intensity discharge lamp with pleated ends High-intensity discharge lamp with pleated ends

1994-07-26

1996-03-19

Yusko, Donald J.

Electric lamp and discharge devices

With gas or vapor

Envelope with particular structure

313 11, 313 44, 313110, 313493, 220 21R, H01J 6130, H01J 6133

Patent

active

055005705

ABSTRACT:
A high-intensity discharge lamp includes a luminous tube in which predetermined rare gases and metal are sealingly filled, and a pair of electrodes provided at the ends, wherein irregular portions are formed at both ends of the luminous tube which surround the electrodes, thereby enhancing color rendering and luminous efficiency, and reducing a starting voltage.

REFERENCES:
patent: 1933329 (1933-10-01), Hull
patent: 4281267 (1981-07-01), Johnson
patent: 4677338 (1987-06-01), Dixon et al.

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