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XCM6040SAT2 UME-0027-03
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2.3 Optical Interface
For the camera the Nikon F-mount is used. The amount and wavelengths of
light required to capture useful images depend on the intended use. Factors
include the property, speed, the objects spectral characteristics, exposure
time, the light source characteristics, the specifications of the acquisition
system and so on.
The exposure amount (exposure time x light amount) is the most important
factor in getting desirable images. Please determine the exposure amount
after studying what is most important to your system.
Keep these guidelines in mind when setting up your light source:
LED light sources are relatively inexpensive, provide a uniform field and
longer life span compared to other light sources. However, they also
require a camera with excellent sensitivity.
Halogen light sources generally provide very little blue light but have
high infrared light (IR) proportions.
Fiber-optic light distribution systems generally transmit very little blue
light relative to IR.
Metal halide light sources are very bright but have a shorter life span
compared to other light sources.
Generally speaking, the brighter the light sources, the shorter the life span.
CMOS image sensors are sensitive to infrared (IR). We recommend using
daylight color fluorescent lamps that have low IR emissions. If you use a
halogen light source, to prevent infrared from distorting the images use an IR
cutoff filter that does not transmit IR wavelengths.
