The 850FAP2500 is a Longpass Filter with a 25 mm diameter and a thickness of 1 mm, sourced from Knight Optical. This filter is designed to transmit light with wavelengths above 850 nm while blocking shorter wavelengths. The cut-on wavelength is 850 nm, and the cut-off wavelength is 2200 nm, providing a significant range of transmission.
The filter is made of UVFS MAL-1965, a material known for its optical properties. It features a thin lens shape, which is beneficial for applications requiring minimal thickness and weight. The front and back of the filter are coated with KNI 850FAP, a coating that enhances the filter's performance and durability.
This filter is currently in stock and available for immediate purchase. For more information, you can visit the product page at https://www.knightoptical.com/stock/default/acrylic-colour-filter-25mmdia-850nm-long-pass.html.