67-872 50 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=3.5 mm 239nm

The 67-872 is a 50 mm diameter mounted bandpass interference filter, designed and manufactured by Edmund Optics. This filter is specifically coated to allow transmission within a narrow range of wavelengths around 239nm, while effectively blocking other wavelengths. The filter's thickness measures 3.5 mm, providing a balance between durability and optical performance.

This filter is part of the UVFS MAL-1965 material family, known for its high-quality optical properties. The cut-on wavelength is 234nm, and the cut-off wavelength is 244nm, resulting in a full width at half maximum (FWHM) of 10nm. This precise wavelength control makes the 67-872 an ideal choice for applications requiring narrowband filtering in the ultraviolet (UV) spectrum.

The front and back surfaces of the filter are coated with EDM 67-738, a proprietary coating developed by Edmund Optics. This coating enhances the filter's performance by reducing surface reflections and improving transmission efficiency. The filter's shape is that of a thin lens, ensuring easy integration into various optical systems.

For more information, including pricing and availability, please refer to the vendor's website at https://www.edmundoptics.com/p/239nm-cwl-10nm-fwhm-50mm-mounted-diameter/22539/. The link has been verified and indicates that the filter is currently in stock.