Contex SD 3600 series, Technical Service Manual

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Introduction
The CIS Element consist of 3 major parts: sensor, lens and light
source.
The Light source is 3 LEDs in RGB that are lit one at a time.
The sensor consists of 10368 individual monochrome sensors.
The purpose of the lens is to channel the light from the
“pixels” on the image to the sensors. There is no magnifi -
cation in the lens (1x1).
The LED’s flash one at a time, capturing one color at a
time.
Due to the very short focal length, the focus depth is
limited. The original has to be in contact with the surface
of the glass plate in order to be in focus.
CIS Element Design