Exposure control device

Details Exposure control device Exposure control device

2004-01-21

2009-10-20

Safaipour, Houshang (Department: 2625)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S471000, C358S475000, C358S514000

Reexamination Certificate

active

07605952

ABSTRACT:
An exposure control device is used for adjusting light amount received by a focusing device and a photoelectric conversion device of an image scanning apparatus. The exposure control device includes a control unit and a light-transmission adjusting device. The control unit asserts a control signal according to a certain condition of the image scanning apparatus. The light-transmission adjusting device is arranged in the light path to the focusing device and the photoelectric conversion device and changes an effective light-transmission area thereof in response to the control signal to adjust light amount passing therethrough.

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