69-887 25 mm Dia. Dichroic Longpass Filter; t=1.05mm 450nm

The 69-887 is a 25 mm diameter Dichroic Longpass Filter, manufactured by Edmund Optics. This filter is designed with a thickness of 1.05mm and features a cut-on wavelength of 450nm. The dichroic filter is specifically designed to reflect or transmit light depending on its wavelength. In this case, it allows light with wavelengths longer than 450nm to pass through while blocking shorter wavelengths.

This filter is made from UVFS Mal-1965 material, a common choice for optical filters due to its excellent optical properties. The filter's geometry includes a diameter of 25mm, making it suitable for a wide range of optical applications. The coating on both the front and back surfaces of the filter is EDM 69-865, which enhances its performance and durability.

The 69-887 filter is designed in the shape of a thin lens, which is a type of lens with a short focal length and small thickness relative to its diameter. This design allows for efficient light transmission and minimal distortion. The filter is currently in stock and available for purchase through the Edmund Optics website, as indicated by its valid weblink status.