Desk level overhead projector

Details Desk level overhead projector Desk level overhead projector

1966-10-10

1979-05-29

Haroian, Harry N.

Optics: image projectors

Unitary plural refracting surfaces

353DIG4, G03B 2128

Patent

active

041565614

ABSTRACT:
A first lens system projects an image onto an optical director which converges the light from the image into a second lens system which reprojects the image onto a screen to be viewed by an audience.

REFERENCES:
patent: 3253505 (1966-05-01), Miller

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