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CHAPTER 2
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COPYRIGHT © 1999 CANON INC. CANOSCAN FB330/FB630 SERIES REV.0 OCT. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
D. Contact Image Sensor
1. Structure of the contact image sensor
Figure 2-16 shows an overview of the contact image sensor with LIDE technology. The
contact image sensor has the LED for exposing a document on the end of glass part called the
light conductor section. When the LED is turned ON, the LED light is supplied to the light
conductor section which exposes a document. That is, the LED light indirectly exposes a
document through the light conductor section. This is called LIDE (LED Indirect Exposure).
The light reflected from the document is collected by the phototransistor array through the rod
lens array and is read as an image signal.
Figure 2-16
LED
Light conductor section
Phototransistor array
Rod lens array
Reading position
Содержание CanoScan FB 630P
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