NE01A-A Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; SM1-Threaded Mount; 350-700nm; OD 0.1 AR 350-700nm

The NE01A-A is a Neutral Density Filter, specifically designed for use in the optical spectrum of 350-700nm. This filter is manufactured by Thorlabs, a leading vendor in the field of optical components. The filter is circular in shape with a diameter of 25 mm and a thickness of 0.6 mm, making it suitable for a wide range of optical applications.

The NE01A-A filter features an SM1-threaded mount, providing a secure and stable connection to other optical components. The filter's coating is another notable feature. Both the front and back of the filter are coated with AR (Anti-Reflective) coating, specifically designed for the wavelength range of 350-700nm. This coating helps to minimize surface reflections, thereby improving the overall transmission efficiency of the filter.

The filter's Neutral Density (ND) property is characterized by an Optical Density (OD) of 0.1. This means that the filter reduces the intensity of the incident light by a factor of 1.26, offering a subtle yet effective reduction in light intensity. The filter's neutral density characteristic ensures that the color balance of the incident light is maintained, making it an ideal choice for applications where light intensity needs to be reduced without altering the color composition of the light.