Image scanning apparatus with expanded magnification capability

Details Image scanning apparatus with expanded magnification capability Image scanning apparatus with expanded magnification capability

1988-03-28

1989-09-26

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250235, 355 57, 358451, 358494, H04N 110

Patent

active

048702943

ABSTRACT:
An image scanning apparatus including a scanning optical system, an image sensor for converting an image beam received from the scanning optical system into an electric signal, and a projecting lens disposed on an optical path between the scanning optical system and the image sensor. The projecting lens is movable along the optical axis for varying projecting magnification. A swing mirror is additionally provided on the optical path between the scanning optical system and the projecting lens. When in an operative position, the swing mirror intercepts the optical path and establishes a shorter optical path for use in obtaining the image of a film or the like in super-magnification.

REFERENCES:
patent: 3837743 (1974-09-01), Amemiya
patent: 4116561 (1978-09-01), Knechtel et al.
patent: 4256969 (1981-03-01), Lianza
patent: 4424534 (1984-01-01), Nagane
patent: 4571376 (1988-06-01), Sugiura et al.

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