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Day / Night Imaging in Color Applications

day_night_diagram Midopt



To achieve accurate color rendition for applications that use a color camera during the day and discrete infrared (IR) illumination at night, a Dual Bandpass Filter is an ideal solution. These filters pass visible light and a narrow wavelength range in the near-IR spectrum that corresponds to the emission wavelength of the IR illumination being used. This ensures clear, accurate images under most lighting conditions and, in some cases, eliminates the need for a filter switching mechanism.


midopt_dual_bandpass_application Midopt



A strong magenta hue often results when the IR filter is removed and an IR-pass filter is employed. The further separation of the visible and IR passband, the better the color rendition.


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