NIR Shortpass Filter (Pass UV-VIS, Block NIR)
NIR shortpass filters are designed to transmit ultraviolet (UV) and visible (VIS) wavelengths while blocking unwanted near-infrared (NIR) light.
Applications:
- IR-cut filtering for digital CMOS/CCD cameras to maintain accurate color rendering
- Detector-side signal isolation for fluorescence microscopy and spectroscopy
- Heat absorption and thermal protection for projection systems and sensitive optical components
- Machine vision and automated optical inspection (AOI) utilizing visible illumination
- Optical setups requiring the elimination of NIR interference from broadband light sources
Cut-off wavelength options:
- 410nm, 420nm, 440nm, 455nm, 490nm, and 505nm for strict UV to blue/green channel isolation
- 550nm and 600nm for specific visible band definition and red to NIR blocking
- 630nm and 650nm for standard IR-cut imaging and visible-spectrum camera color correction
Select the cut-off wavelength based on the illumination source spectrum, target signal, detector sensitivity, blocking range, and required transmission level.