The 67-837 is a 25 mm diameter mounted bandpass interference filter, specifically designed with a central wavelength of 680nm and a full width at half maximum (FWHM) of 10nm. This filter is sourced from Edmund Optics, a reputable vendor known for their high-quality optical components. The filter is currently in stock and available for purchase through the provided weblink.
The filter is made of UVFS Mal-1965 material and has a thickness of 5.9 mm. It features a thin lens shape, providing excellent optical performance. The cut-on wavelength is 675nm, while the cut-off wavelength is 685nm, ensuring a narrow and precise bandpass.
The front and back surfaces of the filter are coated with EDM 67-770, a proprietary coating developed by Edmund Optics. This coating enhances the filter's performance, providing improved durability and resistance to environmental factors.
For users seeking a high-quality bandpass interference filter with a central wavelength of 680nm, the 67-837 is an excellent choice. Its robust construction, precise specifications, and reliable performance make it a valuable addition to any optical system.