ND505A Dia. 0.5 in ND Reflective Filter; SM05-Threaded Mount; Optical Density 0.5

The ND505A is a Neutral Density Filter with a diameter of 0.5 inches, manufactured by Thorlabs. This filter is designed for use with a wavelength of 633 nanometers and features a thin lens shape. The ND505A is part of Thorlabs' extensive catalog of optical elements, which 3DOptix integrates into its advanced optical simulation software.

The filter is made from n-BK7 Schott, a high-quality optical glass, and is coated with tho nd05 on both the front and back surfaces. This coating provides an Optical Density of 0.5, which reduces the intensity of incident light without altering its color composition. This is particularly useful in applications where light intensity needs to be controlled, such as in laser systems or high-powered lighting setups.

The ND505A features an SM05-threaded mount, which allows for easy integration into existing optical systems. The mount's thread pitch is 0.5 modules, making it compatible with a wide range of optical components. The filter's diameter of 12.7 millimeters and thickness of 1 millimeter ensure stable and secure mounting, reducing the risk of misalignment or damage during operation.