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Optical filter

Kurokesu optical filters are designed to control how much visible and infrared light reaches the camera sensor. They cover the two essential categories: IR-cut filters, which transmit visible light (approximately 400-650nm) while blocking infrared, and NIR long-pass filters, which block the visible spectrum and transmit near-infrared wavelengths (typically above 850 nm). This allows the same camera platform to be configured either for accurate color imaging or for IR-only operation in low-light and specialized applications. 

Filters are available in two mechanical formats. Bare D19 round disks are used inside C1 cameras and D25.4mm filters are used in C2/C3/CSI2 cameras.