Ir-Cut Filter Specification - Smartek UCC User Manual

1.4 IR-Cut Filter Specification
The spectral sensitivity of the CMOS image sensors extends into the near-infrared range, what can result
in for the human eye unnatural-looking images on color camera models. To allow an accurate reproduction
of images from color image sensors, IR-cut filters are used.
IR-cut filters are short pass filters that block near infrared light of wavelengths longer than approximately
660nm and pass visible light. All color camera models are equipped with an IR-cut filter as standard,
monochrome models do not have an IR-cut filter installed by default. Figure 3 below shows the transmission
curve of the filter used in the twentynine camera family.
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Figure 3: IR-cut filter specification
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Wavelength (nm)
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User Manual - twentynine
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SMARTEK Vision | User Manual - twentynine | Doc. v1.0.2
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