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 Home > Filters > Shortpass Filters > IR Cutoff Filters > 680nm IR Cutoff Filter
680nm IR Cutoff Filter

Centre Wavelength(CWL):
FWHM(50% point):
Tave>95% at 380-680nm.
customized, from 2x2mm to Dia. 110mm, +/-0.1mm
Surface quality:
Clear aperture:
>90%, or full surface coatings
vary customized, such as B270, BK7, crystal, float or sodalime glass etc.
With AR coatings, Transmission can reach Tave>96%
Heat blocker to resist high temperature at no more than 350 C-degree
While cutting off the UV and IR light and passing the visible light, it will reduce the temperature from the light source and avoid the harmful effect to the optical components because of the UV and IR light. So this filter is usually called heat blocker filter.
680nm UV-IR cutoff filter, as a lowpass filter, is also a basic component for CCD sensor color camera. To block the UV and IR light before the CCD or CMOS sensor, it can reduce the problem of false color and moiré affection, in the hope to reach a much clear image.
As a heat blocker filter, with a heat resistance substrate, such as crystal glass, it can resist high temperature at no more than 350 C-degree.
Application: digital camera, Color CCD or CMOS cameras, Xenon or halogen lamps, stage lamps, biomedical systems etc.

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