NE02A-A Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; SM1-Threaded Mount; 350-700nm; OD 0.2 AR 350-700nm

The NE02A-A is a Neutral Density Filter with a diameter of 25 mm, manufactured by Thorlabs. This filter is designed for use in the visible light spectrum, specifically between 350-700nm, making it suitable for a wide range of optical applications.

The NE02A-A features an Absorptive Neutral Density type, which means it reduces the intensity of light without altering its color composition. This is achieved through a special coating that absorbs a portion of the light, thereby reducing its intensity. The Optical Density (OD) of this filter is 0.2, which corresponds to a reduction of 20% in light intensity.

The filter is mounted in an SM1-threaded mount, which is a standard thread size used in Thorlabs' optomechanical components. This mounting system allows for easy integration with other SM1-threaded components in your optical setup.

The NE02A-A also features Anti-Reflective (AR) coatings on both the front and back surfaces. These coatings are designed to minimize reflections and increase transmission, thereby improving the overall performance of the filter. The AR coating is specifically designed for the 350-700nm range, ensuring optimal performance in the intended wavelength range.