ND504A Dia. 0.5 in ND Reflective Filter; SM05-Threaded Mount; Optical Density 0.4

The ND504A is a Neutral Density Filter with a diameter of 0.5 inches, manufactured by Thorlabs. This filter is designed for use with systems that utilize a 633nm wavelength and is part of Thorlabs' extensive catalog of optical elements. The ND504A is built with a base shape of a Circular filter and is made from n-BK7 Schott material, ensuring high-quality performance.

The filter features a front and back coating of tho nd04, providing an Optical Density of 0.4. This coating is designed to reduce the intensity of incident light without altering its color composition, making it an ideal solution for various applications. The ND504A has a geometry that includes a diameter of 12.7mm and a thickness of 1mm, and it boasts a Thin Lens shape.

The ND504A is available for purchase through the Thorlabs website, where it is currently in stock. The product's webpage provides additional information and specifications, ensuring that users have all the necessary details to make an informed decision when selecting optical components for their systems.