DB940 Dual Bandpass Filter Visible + 940nm NIR

A DB940 filter passes visible and 940nm LED light. 940nm LEDs do not emit the faint red glow associated with 850nm and other lower near-IR LED wavelengths. Using a DB940 filter over or behind the lens allows full color imaging during the day and covert surveillance at night. However any camera’s spectral response at 940nm will be lower than at other, shorter near-IR wavelengths, so relative sensitivity of each camera’s imaging sensor at 940nm must also be considered. Useful Range : 405-650nm, 925-965nm FWHM : 250nm, 60nm Tolerance : +/- 20nm Peak Transmission : ≥90% Surface Quality : 40/20 Compatible LED : 940nm, 950nm Features •Pass visible light and a specific narrow IR band •Peak Transmission > 90% •Ensure that precise, high-contrast images are obtained during both day and night observation. •Achieve accurate color rendition by blocking interfering wavelengths •Allow viewing a scene with appropriately matched IR illumination at night •Useful for video security, red light camera, game camera and license plate recognition applications. Mount & Size Options •Threaded Mount, C/CS Mount, Slip Mount, Unmounted •Threaded Mount Sizes: M22.5-M82 •Custom sizes and shapes available Visible + IR Ideal for applications that use a color camera, allowing for accurate color images during the day and monochrome or color images at night. These filters pass visible light and a narrow IR band that make viewing with commensurate IR illumination possible at night.

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