NE30A-A Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; SM1-Threaded Mount; 350-700nm; OD 3.0 AR 350-700nm

The NE30A-A is a Neutral Density Filter, specifically designed for applications requiring high-quality optical components. Manufactured by Thorlabs, a leading global supplier of photonics equipment, this filter boasts a diameter of 25 mm and a thickness of 2.1 mm, making it a compact yet robust solution for various optical setups.

This filter is made from UVFS, a material with a refractive index of 1.4581 at 587.6 nm, ensuring minimal distortion and high-fidelity light transmission. The filter features an Absorptive Neutral Density design, which means it reduces the intensity of light without altering its color composition. This is particularly useful in applications where maintaining color accuracy is crucial, such as in photography, cinematography, and scientific research.

The NE30A-A has an Optical Density (OD) of 3.0, which translates to a 1000x reduction in light intensity. This makes it suitable for high-intensity light sources or situations where precise control over light levels is required. The filter's coating, both on the front and back, is AR-coated for the 350-700nm range, further enhancing its performance by reducing surface reflections and increasing transmission efficiency.

The filter is mounted with an SM1 thread, a standard Thorlabs mounting system, ensuring compatibility with a wide range of optical components and systems. The weblink status indicates that the product is currently in stock, making it readily available for immediate use.