Mitsubishi Electric KD Series User Manual page 27
Contact image sensor (cis)
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Also See for KD Series:
- User manual (118 pages) ,
- User manual (96 pages) ,
- User manual (92 pages)
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【Depth of illumination】
【DOI of KD series】
【Spectrum of illumination】
TM-XH719C
2-3 Definition
CIS output at focal
position
Object position is getting closer.
Object position is getting
further.
Pixels in a line
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【Definition of CIS output】
3. Light intensity
This indicates a strength or intensity of the light on a
surface of the object. As described on the left, CIS output
Vp is controlled by "Light intensity (I)" * "Storing time (T)".
Therefore, in order to increase scanning speed, Light
intensity is needed to be increased.
4. DOI : Depth of Illumination
DOI is shown in the figure on the left. This figure explains
the variation of illumination intensity due to the changes of
the object position on the lens optical axis. If a position of
the object is set close to the illumination system, the CIS
output becomes large. If another position of the object is
set away from the illumination system, the CIS output
becomes lower.
Larger variation of DOI provides more difficulty to
recognize if the output variation is caused by variation of
the reflectance of the object or by the change of the
position of the object.
5. Spectrum of illumination
This product comprises white LED array as a built-in
illumination. Refer to the spectrum of illumination on the left.
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