NE2R30A Dia. 2 in Absorptive ND Filter; SM2-Threaded Mount; Optical Density 3.0

The NE2R30A is a Neutral Density Filter, specifically designed for applications requiring high-quality light absorption. Manufactured by Thorlabs, this filter boasts a catalog number of NE2R30A and is readily available for purchase through their official website. The weblink provided leads directly to the product page, ensuring seamless access to additional information and purchasing options.

This circular filter, with a diameter of 50.8 mm, is constructed from UVFS material, identified as MAL-1965 in the item data. It has a thickness of 2.1 mm, making it a suitable choice for applications requiring a thin, yet robust optical component. The NE2R30A features a Thin Lens shape, optimized for minimal distortion and maximum light transmission.

The filter's coating is another notable feature. Both the front and back surfaces are coated with tho ne30a, a specialized coating that enhances the filter's performance and durability. This coating contributes to the filter's optical density of 3.0, which is measured at a wavelength of 633 nm. This high optical density makes the NE2R30A an excellent choice for applications requiring significant light reduction.