NE513B Dia. 0.5 in Absorptive ND Filter; Optical Density 1.3

The NE513B is a Neutral Density Filter from Thorlabs, designed with a circular base shape and a diameter of 0.5 inches. This filter is made of n-bk7 schott material, a common choice for its excellent optical properties. It has a thickness of 2.5 millimeters, contributing to its durability and overall performance.

The filter features a Tho NE13A coating on both the front and back surfaces, which provides an optical density of 1.3. This coating is specifically designed to absorb a significant portion of the incident light, reducing its intensity without altering the color composition. This makes the NE513B an ideal choice for applications where light intensity needs to be controlled, such as in high-power laser systems or in photography and cinematography.

The NE513B follows a thin lens shape, which is beneficial for maintaining the optical path integrity in your system. The catalog number for this item is NE513B, and it is currently in stock on Thorlabs' website, as indicated by the "weblink status" field. For more information, you can visit the provided weblink.