86-635 50 mm Dia. Mounted Traditional Coated Bandpass Interference Filter; t=7.5 mm 656nm

The 86-635 is a mounted traditional coated bandpass interference filter, designed and manufactured by Edmund Optics. This filter features a circular geometry with a diameter of 50 mm and a thickness of 7.5 mm, making it suitable for a wide range of optical applications.

The filter is designed to operate at a central wavelength (CWL) of 656 nm, with a full width at half maximum (FWHM) of 10 nm. This specificity makes it ideal for applications that require a narrow bandwidth, such as fluorescence microscopy or laser spectroscopy. The cut-on wavelength is 651 nm, and the cut-off wavelength is 661 nm, ensuring a high level of transmission at the desired wavelength and effective suppression of out-of-band light.

The 86-635 filter is coated with EDM 65-656 on both the front and back surfaces. This coating enhances its performance by reducing reflection and increasing transmission, thereby improving the signal-to-noise ratio in the desired wavelength range. The filter's shape is that of a thin lens, which contributes to its compactness and ease of integration into optical systems.

The filter is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink. Its catalog number, 86-635, can be used for easy reference and identification.