Suppression filters to filter out certain wavelength ranges in the visible or non-visible parts of the spectrum
Are used to obtain specific image information
UV cut filters
Long pass filters
Block the UV wavelength range and transmit the visible
Use an absorptive glass, which is robust, cost-effective and insensitive to angle of incidence
Are used in front of a lens on a CCD or CMOS camera in machine vision applications to protect the sensor from UV light, in absence of internal protection in the camera
Are often used to protect lenses from potential damage
IR cut filters
Short pass filters
Block infrared light and transmit the visible
Consist of absorptive glass
UV-IR cut filters (daylight pass filters)
Combination of a UV cut and a IR cut
Use a UV cut absorptive glass with a thin film layer system as an interference IR cut coating
Are used, for example, in strong sunlight or when certain artificial light sources are employed to make the camera's image perception similar to that of the human eye.
Models
Unmounted filters for diameters from 10 mm to 74 mm
Mounted filters for common thread sizes M25.5 to M67
Different antireflection coating options available