NE50B Dia. 25 mm Absorptive ND Filter; Optical Density 5.0

The NE50B is a Neutral Density (ND) Filter, measuring 25 mm in diameter and 3.6 mm in thickness, manufactured by Thorlabs. This filter is designed to reduce the intensity of incident light without altering its color composition, making it an essential tool in various optical applications.

The NE50B filter features a coating of tho ne50a on both the front and back surfaces, which provides a high level of neutrality and ensures consistent light attenuation. This specific model boasts an optical density of 5.0, indicating that it reduces the light intensity by a factor of 100,000.

The filter is constructed from n-bk7 schott, a high-quality optical glass known for its excellent transmittance, homogeneity, and resistance to thermal shock. This material ensures the filter's durability and maintains its performance across a wide range of temperatures and conditions.

The NE50B filter is designed with a thin lens shape, allowing it to be easily integrated into various optical systems without introducing significant spherical aberration or other optical distortions. This feature, combined with its compact size, makes the NE50B an ideal solution for applications requiring a high-performance ND filter in a small form factor.

For more information, including pricing and availability, please refer to the following link: https://www.thorlabs.com/thorproduct.cfm?partnumber=NE50B