ND502B Dia. 0.5 in Unmounted Reflective ND Filter; Optical Density 0.2

The ND502B is a circular, unmounted Neutral Density (ND) filter, manufactured by Thorlabs, with a diameter of 0.5 inches (12.7 mm) and a thickness of 1 mm. This filter is designed to reduce the intensity of incident light without altering its color composition, making it an ideal tool for various optical applications.

The filter features a front and back coating of tho nd02, a reflective coating that provides an optical density of 0.2. This coating reduces the light intensity by a factor of 1.26, offering versatility in managing light levels in your optical setup.

The ND502B filter is made of N-BK7 Schott, a high-quality borosilicate glass known for its excellent optical properties, including low autofluorescence and high transmittance in the visible spectrum. This material ensures high-fidelity light transmission, making the filter suitable for applications that require precise color reproduction and minimal signal loss.

The filter's thin lens shape allows for easy integration into various optical systems, while its unmounted design provides flexibility in choosing the ideal mounting solution for your specific application. The filter's geometry and material specifications make it compatible with wavelengths around 633 nm.

According to Thorlabs' website, the ND502B filter is currently in stock, ensuring quick delivery and minimal lead times for your projects. For more information and purchasing options, you can visit the product webpage provided in the item data.