Image read device

Details Image read device Image read device

1990-07-06

1993-11-23

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Picture signal generator

355 55, 358487, H04N 1024

Patent

active

052649482

ABSTRACT:
An image read device in which an optical scan mechanism is disposed between an original and a read sensor. The optical scan mechanism comprises a plurality of mirrors for transmitting an optical image of an image on the original, a first optical lens for platen (platen lens) for focusing the optical image on the read sensor, and a second optical lens for film projector (F/P lens) for focusing a film projection image on the read sensor. In a platen mode, an image read from an original is focused on the read sensor by the first optical lens. In an F/P mode, an image from a film is focused on the read sensor by the second optical lens. A good image can be read without degrading the modulation transfer function.

REFERENCES:
patent: 4656525 (1987-04-01), Norris
patent: 4819035 (1989-04-01), Arai et al.
patent: 4901157 (1990-02-01), Ohmori
patent: 5099275 (1992-03-01), Hicks

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