ND2R05B Dia. 50 mm Unmounted Reflective ND Filter; Optical Density 0.5

The ND2R05B is a circular Neutral Density (ND) filter, unmounted and with a diameter of 50 mm, sourced from the renowned optical component manufacturer, Thorlabs. This filter is designed to reduce the intensity of incident light without altering its color composition, making it an essential tool for various optical applications.

The filter boasts a base shape of a thin lens, constructed from the high-quality N-BK7 Schott glass, a material known for its excellent optical properties. The ND2R05B filter features a front and back coating of tho nd05, a specialized coating that provides a neutral density of 0.5. This specific density reduces the light intensity by a factor of 1.41, offering versatility in managing light conditions.

The geometry of the filter includes a diameter of 50 mm and a thickness of 2 mm, ensuring a compact and robust design. The filter's thin lens shape allows for easy integration into various optical systems. The ND2R05B is currently in stock and available for immediate purchase through the Thorlabs website, as indicated by its weblink status.