Midwest Optical DB940 Dual Bandpass Filter Visible + 940nm NIR, 405-650nm, 925-965nm Range
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 cameras spectral response at 940nm will be lower than at other, shorter near-IR wavelengths, so relative sensitivity of each cameras imaging sensor at 940nm must also be considered.
- Useful Range : 405-650nm, 925-965nm
- FWHM : 250nm, 50nm
- Tolerance : +/- 20nm VIS, +/- 10nm NIR
- Peak Transmission : ≥90%
- Surface Quality : 40/20
- Compatible LED : 940nm, 950nm
Note: Midwest Optical filters are considered to be special order items and are thus not returnable.