NENIR06A Dia:25 mm NIR Absorptive ND Filter; SM1-Threaded Mount; OD: 0.6

The NENIR06A is a Neutral Density (ND) Filter, specifically designed for use in the Near-Infrared (NIR) spectrum, with a center wavelength of 1550 nm. This filter is manufactured by Thorlabs, a renowned vendor in the optical industry, and is available for purchase through their official website. The catalog number for this item is NENIR06A.

This filter is circular in shape, with a diameter of 25 mm and a thickness of 1 mm, making it suitable for a wide range of optical applications. The filter is constructed using N-BK7 Schott glass, a material known for its excellent optical properties and durability.

The NENIR06A filter features a special coating on both the front and back surfaces, denoted as 'tho nenir06anirabsnd'. This coating is designed to absorb NIR light, thereby reducing the overall intensity of the light passing through the filter. This makes it an ideal choice for applications where control over light intensity is crucial.

The filter is mounted with an SM1-threaded mount, providing a secure and stable connection to other optical components. The mount has an outer diameter (OD) of 0.6, which is a standard size in the optical industry, ensuring compatibility with a wide range of optical systems.

In terms of its geometry, the NENIR06A filter can be classified as a Thin Lens, indicating that it has a small thickness relative to its diameter. This design helps to minimize optical aberrations, ensuring that the filtered light maintains its original quality as much as possible.