86-655 25 mm Dia. Hard Coated OD 4.0 25nm Bandpass Filter; t=3.5 mm 550nm

The 86-655 is a Bandpass Filter, specifically designed for use in optical systems requiring a narrow wavelength transmission range. Sourced from Edmund Optics, this filter features a circular shape with a diameter of 25 mm and a thickness of 3.5 mm, ensuring compatibility with a wide range of 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 537.5 nm, and the Cut-Off wavelength is 562.5 nm, with a Central Wavelength (CWL) of 550 nm. This makes it ideal for applications that require a high level of precision and selectivity in wavelength transmission.

The 86-655 is made from UVFS Mal-1965, a material known for its optical properties and durability. The filter is hard coated on both the front and back sides with EDM 86-643, a coating that enhances its performance and longevity. This coating helps to reduce surface reflections and increase transmission, making the filter more efficient in its function.

The filter's geometry and physical data have been carefully designed to ensure optimal performance. The Cut-On and Cut-Off wavelengths are precisely defined to provide a narrow bandpass, and the filter's thickness is optimized to minimize optical distortions.