Image display control panel for overhead projectors

Details Image display control panel for overhead projectors Image display control panel for overhead projectors

1992-03-04

1992-12-15

Cuchlinski, Jr., William A.

Optics: image projectors

Light shield, mask, hood, or diaphragm

353DIG6, G03B 2114

Patent

active

051721449

ABSTRACT:
An attachment device for overhead projectors which permits blocking of the image display by changing the position of an opaque panel wherein the device is frictionally attached to the projection head. The opaque panel of heat transmitting foil is hingedly attached to a hood. The sides of the hood extend downwardly and are biased inwardly to engage the projection head.

REFERENCES:
patent: 4523823 (1985-06-01), Roope

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