The MidOpt DB940-25.4 passes visible and reflects 940nm LED light without impacting system MTF. 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 enables 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 the relative sensitivity of each camera’s imaging sensor at 940nm must also be considered. DB940 filters are also used in many automated inspection and 3D point cloud imaging applications. All MidOpt filters can also be purchased unmounted or in custom dimensions upon request from Machine Vision Direct. Technical Specifications Specifications + Useful Range Min 405 nm Useful Range Max 650 nm Secondary Useful Range Min 925 nm Secondary Useful Range Max 965 nm FWHM 25050 nm Adhesive Backed Yes Tolerance 2010 % Peak Transmission ≤ 90 % Surface Quality (Scratch-Dig) 40-20 Substrate Material Clear Glass Filter Diameter 25.4® C-Mount Product Availability + Standard Lead Time 15 Days Stock Location Built to Order Product Lifecycle Active
