NE513A Dia. 0.5 in Absorptive ND Filter; SM05-Threaded Mount; Optical Density 1.3

The NE513A is a Neutral Density Filter from Thorlabs, designed with a circular shape and a diameter of 0.5 inches. It is made from n-bk7 schott material, a common choice for its excellent optical properties. The filter features a thin lens shape, with a thickness of 2.5 millimeters, making it suitable for various optical applications.

The NE513A boasts a wavelength of 633 nanometers, which is within the visible light spectrum. This specific model is coated with tho ne13a on both the front and back, providing an Optical Density of 1.3. This coating is designed to reduce the intensity of light passing through the filter without altering its color, making it an ideal choice for applications requiring light attenuation.

The filter is mounted with an SM05 thread, ensuring a secure and stable fit. According to Thorlabs' website, the NE513A is currently in stock, making it readily available for immediate use. For more information, users can refer to the product's catalog number or visit the vendor's website through the provided link.