Automatic lamp changer for modular slide projector

Details Automatic lamp changer for modular slide projector Automatic lamp changer for modular slide projector

1983-12-21

1985-05-21

Haroian, Harry N.

Optics: image projectors

Lamp control

Lamp position adjustable

G03B 2120

Patent

active

045182337

ABSTRACT:
A lamp changer for use with a slide projector having a projection lens and a removably modular projection lamp unit insertable through an access door opening. The lamp changer has a housing releasably connectable to the projector at the access opening and a lamp holder for holding at least two projection lamps. The lamp holder is mounted in the housing for pivotable movement about a first axis to successively position each lamp in the lamp holder in direct alignment with the projection lens. Movement of the lamp holder is effected when desired and the new lamp is moved into alignment with the lens and is energized.

REFERENCES:
patent: 2288345 (1942-06-01), De Vry
patent: 2529052 (1950-11-01), Sherwood
patent: 3270196 (1966-08-01), Foley
patent: 3515476 (1970-06-01), Field
patent: 3733121 (1973-05-01), Smitzer
patent: 3914645 (1975-10-01), LiDonnici
patent: 4094609 (1978-06-01), Fujii et al.
patent: 4167310 (1979-09-01), Persha et al.
Publication: Operating Instructions for Kodak "Ektagraphic III, E. S. Projector," Motion Picture & Audiovisual Markets Div., Rochester, N.Y. 14650, 1981.

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