NE50B-B Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; 650-1050nm; OD 5.0 AR 650-1050nm

The NE50B-B is a Neutral Density Filter with a circular shape and a diameter of 25 mm. It is designed for use in the 633 nm wavelength range and has a thickness of 3.6 mm. This filter is sourced from Thorlabs, a renowned vendor of optical elements.

The NE50B-B features an absorptive neutral density design, which is characterized by its ability to reduce light intensity without altering the color balance of the incident light. This makes it an ideal choice for applications where maintaining color fidelity is crucial, such as in photography, cinematography, and beam attenuation in laser systems.

The filter is coated on both the front and back surfaces with AR coatings optimized for the 650-1050 nm range. These anti-reflection coatings help to minimize surface reflections, thereby improving transmission and reducing the likelihood of unwanted ghosting and flare effects.

The NE50B-B has a high optical density (OD) of 5.0, indicating that it attenuates incident light by a factor of 100,000. This makes it suitable for high-power applications where significant light reduction is required.

The filter is designed with a thin lens shape, which not only contributes to its compactness but also allows for easy integration into optical systems. It is currently in stock and available for immediate purchase through the provided weblink.