NE50B-A Dia. 25 mm AR-Coated Neutral Density Filter; 350-700nm; OD 5.0 AR 350-700nm

The NE50B-A is a Neutral Density Filter with a diameter of 25 mm, manufactured by Thorlabs. This filter is designed for use within the wavelength range of 350-700nm, making it suitable for a wide range of optical applications. The filter has a thickness of 3.6 mm, providing stability and durability.

The NE50B-A filter features an Anti-Reflection (AR) coating on both the front and back surfaces. This coating, specific to the wavelength range of 350-700nm, reduces reflective losses and enhances transmission, thereby improving the overall performance of the filter. The AR coating also helps to minimize surface scattering, which can lead to improved image quality.

The filter's shape is described as a Thin Lens, which suggests that it has been designed to minimize optical aberrations and distortions. This is particularly beneficial in applications where high-precision optical alignment is required.

The NE50B-A filter is currently in stock and available for purchase through the Thorlabs website. Further information, including technical specifications and purchasing details, can be found at https://www.thorlabs.com/thorproduct.cfm?partnumber=NE50B-A.