Illumination – Light source and modifier – Including reflector
Patent
1981-04-13
1983-06-28
Brown, David H.
Illumination
Light source and modifier
Including reflector
362296, 362294, 362350, 362226, F21V 700
Patent
active
043909353
ABSTRACT:
A projection unit for use within a slide or film projector or a microfilm viewer. The unit comprises a U-shaped metallic holder, a socket attached to or forming part of the holder's rear upstanding segment, a glass reflector secured to the holder's front segment such that its forward opening aligns with an aperture in the front segment, a tungsten-halogen lamp removably located within the socket and not engaging any of the interior surfaces of the reflector, and an ejector (metal arm member) for engaging the sealed end of the lamp and ejecting it out through the glass reflector's forward opening. Replacement of the lamp is thus possible without replacing the glass reflector.
REFERENCES:
patent: 3314331 (1967-04-01), Wiley
patent: 3502864 (1970-03-01), Wagner
patent: 3621232 (1971-11-01), Hough et al.
patent: 3639750 (1972-02-01), Anthonijsz
patent: 3789212 (1974-01-01), Wagner
patent: 4156901 (1979-05-01), Haraden et al.
patent: 4219870 (1980-08-01), Haraden et al.
patent: 4280173 (1981-07-01), Bradley et al.
patent: 4281363 (1981-07-01), Mecone et al.
Audesse Emery G.
Chavan Pratap P.
Kendrick George B.
Brown David H.
Fraley Lawrence R.
Griffiths, Jr. John E.
GTE Products Corporation
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