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Mitsubishi Electric KD Series User Manual page 25

Contact image sensor, web surface inspection
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2-3 Definition
【MTF variation of scan direction】
80
Mitsubishi Standard Chart(5.68lp/mm)
70
60
50
40
30
20
10
0
1
23
No. of Sensor IC
R
Variation of MTF value (KD6R1064DXL-NL)
102%
101%
100%
99%
98%
0
200
Scan direction (mm)
Distortion ratio of KD Series
TM-XJ959A
Chart for MTF Measurement:
45
67
G
B
400
600
800
The graph on the left shows a property of resolution uniformity in
the scanning direction of KD6R1064DXL-NL. Each dot on this
Graph shows MTF value of each sensor chip in a CIS.
1. MTF value variation in the scanning direction
The graph on the upper left shows an example of MTF values of
each sensor ICs. This shows that this CIS has uniform resolution
in whole scanning width.
2. Distortion
The graph on the lower left shows an example of distortion values
st
in 1
pixel of each sensor ICs, which are calculated by
measurement value of each pixel after assemble ( n = 5).
Distortion(%)
= Measured distance* / Designed distance* ×100
*Measured distance: a distance between the first pixel and the
measured pixel.
*Designed distance: an ideal distance between the first pixel and
the designed pixel.
This data shows that this CIS has extremely less distortion in
whole scanning width.
25
© Mitsubishi Electric Corporation

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