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US 7,030,543 B2Granted
Reflector lamp having reduced seal temperature
AssigneeOsram Sylvania Inc.
InventorsMiguel Galvez, Walter P. Lapatovich
Life of this patent
Estimating the term…
Abstract
The seal temperature of a reflector lamp having a ceramic metal halide light source is reduced by a light absorbing layer which is provided in a region of the outer jacket adjacent to the electrode seal. Light reflected within the neck cavity of the reflector lamp impinges on the light absorbing layer and is absorbed before it can reach the electrode seal which is at least partially located in the neck of the reflector. The heat from the absorbed light is conducted into the base of the lamp to be dissipated in the socket.
Claims20
A reflector lamp comprising:
- a reflector body having a reflective surface, a concave shell, and a neck defining a neck cavity;
- and
- a light source having an outer jacket which encloses a ceramic discharge vessel having an electrode seal, the electrode seal being at least partially situated within the neck cavity of the reflector body, the outer jacket having a light absorbing layer in a region of the outer jacket adjacent to the electrode seal.
A reflector lamp comprising:
- a reflector body having a reflective surface, a concave shell, and a neck defining a neck cavity;
- a light source having an outer jacket enclosing a ceramic discharge vessel, the discharge vessel having a capillary and a body which encloses a discharge cavity containing a metal halide fill and a gaseous fill, the capillary extending outwardly from the body and containing an electrode assembly and an electrode seal, the electrode assembly passing through the capillary and being connectable to a power source, the electrode seal being at least partially situated within the neck cavity of the reflector, the outer jacket having a light absorbing layer in a region adjacent to the electrode seal.
Dependencies are inferred from the claim text.