87-812 12.5 mm Dia. Hard Coated OD 4.0 25nm Bandpass Filter; t=3.5 mm 1050nm

The 87-812 is a Bandpass Filter with a diameter of 12.5 mm and a thickness of 3.5 mm, sourced from the reputable optical vendor, Edmund Optics. This filter is specifically designed for a central wavelength (CWL) of 1050 nm, making it suitable for applications that require precise wavelength selection within this range.

The filter is hard coated on both the front and back surfaces with the coating type edm 87-812. This coating enhances the filter's durability and performance, ensuring reliable operation even under demanding conditions. The cut-on wavelength is 1037.5 nm, and the cut-off wavelength is 1062.5 nm, providing a narrow bandwidth of 25 nm. This characteristic is particularly beneficial in applications where stray light suppression and high transmission are critical.

The 87-812 filter features a circular shape and a thin lens geometry. It is available in the UVFS MAL-1965 material, which is known for its excellent optical properties. The filter's catalog number is 87-812, and it can be found on the Edmund Optics website, where it is currently in stock.