86-958 25 mm Dia. Hard Coated OD 4.0 50nm Bandpass Filter; t=3.5 mm 875nm

The 86-958 is a Bandpass Filter, specifically designed for use in optical systems requiring a narrow bandwidth transmission. This filter, sourced from Edmund Optics, features a 25 mm diameter and a thickness of 3.5 mm, making it suitable for a wide range of applications. The filter's primary function is to transmit light within a specific range of wavelengths, in this case, 875nm, while blocking light outside this range.

The 86-958 filter is hard coated, which enhances its durability and resistance to wear and tear, making it ideal for use in harsh environments. The coating on both the front and back surfaces of the filter is EDM 86-946, a proprietary coating developed by Edmund Optics. This coating ensures high transmission and low reflection, further enhancing the filter's performance.

The filter's physical data includes a cut-on wavelength of 850nm and a cut-off wavelength of 900nm, with a center wavelength (CWL) of 875nm. This means that the filter begins transmitting light at 850nm and stops transmitting at 900nm, with the highest transmission occurring at 875nm. The filter's geometry, including its diameter and thickness, is designed to ensure optimal performance in its intended application.