NE250B 2 in x 2 in Absorptive ND Filter; Optical Density 5.0

The NE250B is a Neutral Density (ND) Filter, measuring 2 inches by 2 inches, sourced from the renowned optical component manufacturer, 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 features an Optical Density (OD) of 5.0, which signifies a significant reduction in light intensity. Specifically, it allows only 1/100,000th of the incident light to pass through, providing a high level of attenuation. This makes it ideal for use in high-intensity lighting environments or when capturing images with extremely fast shutter speeds.

The NE250B is constructed from N-BK7 Schott, a high-quality optical glass known for its excellent transmittance and low auto-fluorescence. The filter's geometry includes a width of 50.8 millimeters, a height of 50.8 millimeters, and a thickness of 3.6 millimeters, ensuring a precise fit in various optical setups.

The front and back surfaces of the filter are coated with Thorlabs' NE50A coating, which further enhances its performance. This coating reduces surface reflections, thereby minimizing light loss and improving overall transmission. The filter's shape is classified as a Thin Lens, indicating its suitability for use in lens systems.

The NE250B is currently in stock and available for purchase through the Thorlabs website. For more information, users can refer to the provided weblink.