NE06A-A Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; SM1-Threaded Mount; 350-700nm; OD 0.6 AR 350-700nm

The NE06A-A is a Neutral Density Filter, specifically designed for use in the optical spectrum, with a central wavelength of 633nm. This filter, sourced from Thorlabs, is a circular shape with a diameter of 25mm and a thickness of 1.1mm. It features an SM1-threaded mount, providing a secure and stable connection within your optical system.

The NE06A-A filter is made from UVFS material, identified by the Mal-1965 material ID. This material is known for its excellent optical properties, making it an ideal choice for a wide range of applications. The filter boasts an Optical Density (OD) of 0.6, which is a measure of how much light is absorbed by the filter. This particular OD indicates that the filter will reduce the intensity of light by a factor of 2.

The filter's coating is another notable feature. Both the front and back surfaces of the filter are AR-coated, specifically for the 350-700nm range. AR coating, or Anti-Reflective coating, is designed to minimize the amount of light reflected off the surface of the filter. This results in improved transmission of light through the filter, reducing unwanted reflections and increasing the overall efficiency of your optical system.

In terms of shape, the NE06A-A filter is designed as a Thin Lens. This shape is often used in optical systems to focus or diverge light, adding another layer of functionality to this versatile filter.