Electric lamp and discharge devices – With temperature modifier – For envelope wall
Patent
1992-04-09
1993-10-12
Demeo, Palmer C.
Electric lamp and discharge devices
With temperature modifier
For envelope wall
313 45, 313634, H01J 502, H01J 6130, H01J 6152
Patent
active
052528863
ABSTRACT:
The high pressure discharge lamp has an elongate discharge vessel of ceramic material. The outside surface area of the wall of the discharge vessel is strongly increased by a relief. Since a higher heat flow from the discharge vessel to the environment is possible, the lamp can withstand a higher load. In this way, lamp properties such as luminous flux, color rendering index and/or color temperature can be improved.
REFERENCES:
patent: D198268 (1964-05-01), Thorington et al.
patent: 1589927 (1926-06-01), Beattie
patent: 3622910 (1971-11-01), Kantrowitz et al.
patent: 4825125 (1989-04-01), Lagushenko et al.
patent: 4970431 (1990-11-01), Vegter et al.
Carleton Samuel A.
Jacobs Cornelis A. J.
Kandelaars Theodorus P. P.
Renardus Max L. P.
DeMeo Palmer C.
U.S. Philips Corporation
Wieghaus Brian J.
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