Device for simulation of projected image

Details Device for simulation of projected image Device for simulation of projected image

1982-03-01

1983-10-04

Grieb, William H.

Education and demonstration

Occupation

434 91, G09B 1900

Patent

active

044076550

ABSTRACT:
Disclosed is a device for simulation of projected image comprising a support member, a frame and an eye member attached respectively to the opposite ends of the support member. The relation between the size of the frame and the distance from the frame to the eye hole in the eye member is similar to the relation between the size of the projected image and the distance from the surface of the projected image to the viewer's seats. When the user looks through the eye hole at a given original and finds the contents of the image discernible, he is assured that a projection film to be produced by photographing the image enclosed with the frame, on being projected on a screen, will reproduce an image amply discernible by the viewers.

REFERENCES:
patent: 254178 (1882-02-01), Van Lith
patent: 1771903 (1930-07-01), Soth
patent: 2571613 (1951-10-01), Rissland

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