Increased life reflector lamps
AssigneeGeneral Electric Company
InventorsCharles D. Tschetter, Rajasingh Israel, Carl Gunter
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Abstract
A light source comprising a light generating element and a reflector, said reflector comprised of a generally parabolic shaped body including an at least substantially closed end and an open end, the light source disposed generally adjacent said closed end, said reflector including a light reflecting coating on both an internal and an external surface of said body, wherein a portion of said external surface of said body adjacent the closed end of the reflector is substantially devoid of said coating.
Claims14
A light source comprising a light generating element and a reflector, said reflector comprised of a generally parabolic shaped body for reflecting light forward and a rearwardly projecting member having side walls and an end opposite said parabolic shaped body, said member forming an elongated cavity, the light generating element having a first end disposed within said cavity, said reflector including a light reflecting coating on both an internal and an external surface of said body, the light source having the light reflecting coating on an external surface of said side walls substantially removed by sand blasting.
A method of manufacturing a reflector for a lamp comprising coating the internal and external surfaces of a generally parabolic shaped body having a rearwardly protruding member including side walls and an end opposite said parabolic shaped body, said member forming a cavity, with a light reflecting coating via chemical vapor deposition, and treating the external surface of the side walls to remove the reflective coating.
A method of manufacturing a reflector for a lamp comprising coating the internal and external surfaces of a generally parabolic shaped body having a rearwardly protruding member including side walls and an end opposite said parabolic shaped body, said member forming a cavity, with a light reflecting coating via chemical vapor deposition, wherein the external surface of the side walls are masked during said chemical vapor deposition.
Dependencies are inferred from the claim text.