ND513A Dia. 0.5 in ND Reflective Filter; SM05-Threaded Mount; Optical Density 1.3

The ND513A is a Neutral Density Filter from Thorlabs, designed with a circular base shape and a diameter of 0.5 inches. This filter is made from n-bk7 schott material and has a thickness of 1 millimeter. It features a thin lens shape and is equipped with a SM05-threaded mount for easy integration into optical systems.

The ND513A filter boasts a wavelength of 633 nanometers and is coated with tho nd13 on both the front and back surfaces. This coating enhances the filter's performance and durability. The optical density of this filter is 1.3, which is ideal for applications requiring significant light reduction while maintaining color neutrality.

Thorlabs, the vendor, provides a valid weblink indicating that the ND513A is in stock, ensuring immediate availability for your optical needs. The catalog number for this item is ND513A, and you can find more information about it on Thorlabs' official website.