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

2-1 What's Contact Image Sensor
【Perspective view】
【Cross-section】
Cover-plate
Frame
TM-XJ959A
* *
Lens (GRIN lens Lens (GRIN lens ) )
Frame Frame
Sensor IC
Sensor board
Lens (GRIN lens)
Sensor IC
Sensor board
Signal processing board
& Camera Link® interface
Camera Link® is a trade mark registered by AIA（Automated 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;
CIS
① Resolution Fixed
Shallow
② Depth of focus
(±0.5〜 2mm)
③ Distortion Small
④ Light path Short (10〜50mm)
⑤ Requested light
Small
intensity
⑥ Power
Small
consumption
⑦ light-sensitive
CMOS / CCD
element
⑧ Impacting and
Strong
vibration
⑨ Setup
Easy
adjustment
⑩ Outline Compact
Optical reduction
system
Flexible
Deep
(〜 4mm）
Large
Long(〜200mm)
Large
Large
CCD
Weak
Need to be adjusted
with lens precisely.
Large
18
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