STEMMER IMAGING

• 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