Illumination – Light source and modifier – Including reflector
Patent
1978-05-22
1980-07-01
Engle, Samuel W.
Illumination
Light source and modifier
Including reflector
362306, 362346, 362444, F21V 700, F21V 1704
Patent
active
042109540
ABSTRACT:
The invention relates to an improvement in reflectors including a first reflector, which is detachably fastened to a bulb and is combined with a small reflector, which is fixed in front of the bulb and opposite said first reflector in order to reflect direct beams from the bulb to said first reflector, which has a center hole, through which the neck of the bulb is inserted, the edge of said hole being placed against the lower part of the bulb and small reflector being placed on to the upper spherical part of the bulb, whereby said reflector and said small reflector are positioned in relation to each other in a certain optical position in relation to the center of the light of the bulb independently of how far into the socket the bulb is placed, said small reflector having the form of a paraboloid, the focal plane of which is placed so close to the vertex of the paraboloid, that the light beams emitted from the center of the lamp and reflected by said small reflector in the direction towards the lamp, will be directed outside a circle plane, which is formed by a section through the bulb at the area where the bulb is fastened in to the socket.
REFERENCES:
patent: 1290482 (1919-01-01), Bailey
patent: 1809878 (1931-06-01), Whitman
patent: 2126650 (1938-08-01), Matera
patent: 3511985 (1970-05-01), Muscovitch
patent: 4135232 (1979-01-01), Berkenhoff
Engle Samuel W.
Walsh Donald P.
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