Phytec FireWire-CAM-001, Manual

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The Camera in Detail
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PHYTEC Messtechnik GmbH 2005 L-661d_1
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Figure 35: Spectral Response (FireWire_CAM-001)
3.5.2 FireWire-CAM-002 (Color)
Simply put, the CCD-Chip converts photons to electrons. Three color
filters (red, green, and blue) are used for color display. With these
three color levels it is possible to create the picture colors. With
single-chip cameras (like the FireWire-CAM-002) very small filter
elements of the three colors are placed alternatingly in front of the
individual pixels of the CCD chip (called Mosaic or Bayer filters).
Figure 36 demonstrates the function of this filter.
The small picture below shows a red field and a blue field with a
green border. This picture was taken without the usual preparation (we
will go into more detail about this later). That is why it appears a bit
„raw“.
The larger picture is an enlarged section of the smaller picture. The
letters R (Red), G (Green) and B (Blue) show the structure of the color
filter, whlie the gray value represents the brightness of the individual
pixels.