Simulated reflector lamp using par lamp components

Electric lamp and discharge devices – With optical device or special ray transmissive envelope – Reflector

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Details

439611, H01J 548, H01J 516

Patent

active

057510954

ABSTRACT:
A reflector lamp unit is provided having a light source which is capable of meeting the efficiency requirements mandated by law. The reflector lamp unit includes a pressed glass reflector member having a curved portion and a lower neck portion on which is secured a conventional threaded screw base. The light source can be a high efficiency light source such as a discharge light source of a tungsten-halogen light source contained within a pressurized lamp envelope. The light source is disposed within the curved portion of the reflector member at a position along the longitudinal axis and ahead of the optical focal point of the reflector. In this manner, a beam pattern is generated which is widely scattered and unfocused as compared to that beam pattern which would be produced from a light source disposed at the focal point. The reflective surface of the curved portion of the reflector member is lightly roughened thereby resulting in an increased diffusion characteristic of the beam pattern. A spacer member is disposed within the lower portion of the reflector member to provide both a means for enclosing the inner space of the reflector and for providing support for the light source.

REFERENCES:
patent: 2017733 (1935-10-01), Sakakura
patent: 4243907 (1981-01-01), Kohl et al.
patent: 4864184 (1989-09-01), Fleming
patent: 4877992 (1989-10-01), Devir
patent: 5039909 (1991-08-01), Kieshivey et al.
patent: 5045748 (1991-09-01), Ahlgren et al.
patent: 5057735 (1991-10-01), Zalar et al.
patent: 5216318 (1993-06-01), Van Dulmen et al.
patent: 5420474 (1995-05-01), Schmitt, Jr. et al.

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