The 84-122 is a Bandpass Filter, specifically designed for Fluorescence applications, offered by Edmund Optics. This filter, with a catalog number 84-122, has a diameter of 50 mm and a thickness of 2 mm, making it a substantial yet manageable component for various optical setups.
The filter's primary function is to allow light within a specific wavelength range to pass through while blocking out other wavelengths. In this case, the Cut-on wavelength is 748 nm, and the Cut-off wavelength is 802 nm, with the Central Wavelength at 775 nm. This means it is particularly effective at filtering light in the near-infrared spectrum.
The filter is made from UVFS Mal-1965 material, a common choice for its optical properties and durability. The front and back of the filter are coated with EDm 84-090, a hard coating that enhances the filter's longevity and resistance to wear and tear, making it suitable for demanding environments.
The filter's shape is that of a Thin Lens, suggesting it may have some light-focusing capabilities, although this is not its primary function. The filter is currently in stock and available for purchase through the provided weblink.