What's Contact Image Sensor (Cis) - Mitsubishi Electric KD Series User Manual

【Perspective view】
【Cross-section】
Cover-plate
Frame
TM－XJ101C
2-1 What's Contact Image Sensor
Lens (GRIN lens
Frame
Sensor IC
Sensor board
Lens (GRIN lens)
Sensor IC
Sensor board
Signal processing board
& CoaXpress® interface
CoaXpress® is a trade mark registered by JIIA (Japan Industrial Imaging Association).
This product (CIS : Contact Image Sensor) is a
scanning device that comprises several key-
components in below;
・Sensor IC array in the length as same as scan width.
・Rod lens array in the length as same as scan width.
・Illumination in the length as same as scan width.
GRIN lens : Gradient Index lens
＊
* )
The features of CIS can be compared to line
camera as follows;
① Resolution
② Depth of focus
③ Distortion
④ Light path
⑤ Requested light
intensity
⑥ Power
consumption
⑦ light-sensitive
element
⑧ Impacting and
vibration
⑨ Setup
adjustment
⑩ Outline
Optical reduction
CIS
system
Flexible
Fixed
Shallow Deep
(±0.5～ 2mm) (～ 4mm）
Small Large
Short (10～50mm) Long(～200mm)
Small Large
Small Large
CMOS / CCD CMOS /CCD
Strong Weak
Need to be adjusted
Easy
with lens precisely.
Compact Large
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