Overhead projector with pivoting lamp changer and color adjustme

Details Overhead projector with pivoting lamp changer and color adjustme Overhead projector with pivoting lamp changer and color adjustme

1992-10-22

1993-08-31

Cuchlinski, Jr., William A.

Optics: image projectors

Lamp control

Lamp position adjustable

353 85, 353119, 353 62, G03B 2120

Patent

active

052413330

ABSTRACT:
An overhead projector is provided with two lamps arranged in an angular relationship on a frame having a single pivot point to cause the lamp not in use to be out of the path of air flowing to the lamp in use within the projector. The pivot point may coincide with a lead screw which would permit axial movement of the lamps in addition to rotational movement to correct for undesirable color effects.

REFERENCES:
patent: 3314330 (1967-04-01), Finke
patent: 3515476 (1970-06-01), Field et al.
patent: 3529146 (1970-09-01), Betlejewski et al.
patent: 3529147 (1970-09-01), Badalich
patent: 3567318 (1971-03-01), Webb
patent: 4061911 (1977-12-01), Krosin
patent: 4338006 (1982-07-01), Ozeki
patent: 5135301 (1992-08-01), Dreyer, Jr. et al.

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