NE504B Dia. 0.5 in Absorptive ND Filter; Optical Density 0.4

The NE504B 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 0.7 millimeters, ensuring a compact and lightweight design. The NE504B boasts a thin lens shape, contributing to its versatility and ease of integration into various optical systems.

The NE504B is coated with tho ne04a on both the front and back surfaces. This coating provides an optical density of 0.4, which corresponds to a transmission of approximately 39.8%. This specific optical density is suitable for moderate light reduction, offering flexibility in managing light intensity.

For more information, including availability and pricing, please refer to the vendor's website at https://www.thorlabs.com/thorproduct.cfm?partnumber=NE504B. The link has been verified and indicates that the product is currently in stock.