87-810 50 mm Dia. Hard Coated OD 4.0 25nm Bandpass Filter; t=3.5 mm 975nm

The 87-810 is a Bandpass Filter, specifically designed with a 50 mm diameter and a 3.5 mm thickness. This filter, offered by Edmund Optics, features a hard coating on both the front and back surfaces, ensuring durability and longevity. The filter is designed to transmit light within a specific wavelength range, centered at 975nm, while blocking light at other wavelengths. The cut-on wavelength is 962.5nm, and the cut-off wavelength is 987.5nm, providing a narrow bandwidth of 25nm. This makes it ideal for applications that require precise wavelength selection. The filter is shaped as a thin lens, which can be beneficial in certain optical system designs. The catalog number for this item is 87-810, and it is currently in stock, according to the vendor's website.