Lenses for photographic printers

Details Lenses for photographic printers Lenses for photographic printers

1986-05-29

1988-05-10

Corbin, John K.

350543, G02B 1702

Patent

active

047431032

ABSTRACT:
A lens device for a photographic printer to enable it to print same size prints from full-frame and half-frame images intermixed in an elongate strip of spliced film strips. The lens device rotates the image through 90.degree. without affecting the inversion needed in a printer lens. The device includes a pechan prism in each of the air spaces between the lens elements and the object and image planes, respectively. There is a relative angular displacement of 45.degree. between the prisms.

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patent: 4580886 (1986-04-01), Hajnal
Optics and Laser Technology; vol. 4, No. 4; 8/1972.

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