NE505B Dia. 0.5 in Absorptive ND Filter; Optical Density 0.5

The NE505B is a Neutral Density (ND) Filter, measuring 0.5 inches in diameter, manufactured by Thorlabs. This filter is designed to reduce the intensity of incident light without altering its color composition, making it an essential tool in various optical applications.

The filter is made from N-BK7 Schott, a high-quality optical glass, and features a circular shape. It has a diameter of 12.7 millimeters and a thickness of 0.9 millimeters, ensuring a compact and lightweight design. The NE505B boasts a front and back coating of tho ne05a, which provides excellent absorption properties and ensures consistent performance.

The NE505B has an optical density of 0.5, meaning it reduces the light intensity by a factor of 10^0.5 or approximately 31.62%. This makes it suitable for applications where moderate light reduction is required.

The filter's geometry is designed in the shape of a thin lens, which not only contributes to its compactness but also allows for easy integration into optical systems. The NE505B is currently in stock and available for immediate purchase through the vendor's website, as indicated by its weblink status.