NDW01B Dia. 25 mm Reflective ND Filter; Optical Density 0.1

The NDW01B is a Neutral Density Filter with a diameter of 25 mm, manufactured by Thorlabs. This filter is designed to reduce the intensity of incident light without altering its color composition, making it an essential tool for various optical applications.

The filter is made from N-BK7 Schott, a high-quality optical glass known for its excellent transmittance and low auto-fluorescence. It features a thin lens shape, ensuring minimal distortion and a high degree of optical precision. The filter's thickness is 1 mm, providing sufficient structural integrity while maintaining a low profile.

The NDW01B boasts a front and back coating of THo NDW01B, a specialized coating that enhances the filter's performance by reducing surface reflections and increasing transmission. This coating also provides scratch resistance, ensuring the filter's longevity and durability.

The filter's optical density is 0.1, which means it reduces the light intensity by a factor of 1.26. This makes it suitable for applications where only a slight reduction in light intensity is required.

The filter is currently in stock and can be purchased directly from Thorlabs via the provided weblink. With its high-quality materials, precise design, and reliable performance, the NDW01B is an excellent choice for a wide range of optical applications.