Episcopic projector

Details Episcopic projector Episcopic projector

1981-06-11

1983-04-19

Haroian, Harry N.

Optics: image projectors

Episcope

Reflector between lamp and screen

353 38, G03B 2106

Patent

active

043803806

ABSTRACT:
An episcopic projector in which a field flattening lens located beneath the copy plane is used to direct light incident the copy and reflected from the copy through a Fresnel lens of relatively long focal length. An intermediate mirror is used for left right correction and the Fresnel lens is mounted so that it may be focused by simply moving it along the optical axis of the system.

REFERENCES:
patent: 2647437 (1953-08-01), Bentley et al.
patent: 3051041 (1962-08-01), Lehmann et al.
patent: 3064523 (1962-11-01), Meltzer
patent: 3915567 (1975-10-01), Altman
patent: 3951535 (1976-04-01), Altman
patent: 4261657 (1981-04-01), Reiback

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