NENIR50A Dia:25 mm NIR Absorptive ND Filter; SM1-Threaded Mount; OD: 5.0

The NENIR50A is a Neutral Density (ND) Filter, specifically designed for use in the near-infrared (NIR) region with a center wavelength of 1550 nm. This filter is manufactured by Thorlabs, a leading global supplier of photonics equipment. The NENIR50A is part of Thorlabs' extensive catalog of optical elements, which 3DOptix integrates into its advanced optical simulation software.

This filter is circular in shape, with a diameter of 25 mm and a thickness of 2.3 mm. It is made from N-BK7 Schott glass, a popular choice for its excellent optical properties and high damage threshold. The NENIR50A features a thin lens shape, which minimizes optical aberrations and ensures high-quality imaging.

The NENIR50A is coated with Thorlabs' proprietary NENIR50ANIRABSND coating on both the front and back surfaces. This absorptive coating is specifically designed for the NIR region, providing high absorption and excellent neutrality. It ensures consistent attenuation across the entire NIR spectrum, making it ideal for a wide range of applications, including laser absorption, beam shaping, and contrast enhancement.

The filter is mounted with an SM1-threaded mount, providing a secure and stable connection to your optical system. The SM1 thread is a standard 1.036-20 UN thread, widely used in precision optics. The mount has an outer diameter (OD) of 5.0 mm, ensuring compatibility with a wide range of optical components and systems.

The NENIR50A is currently in stock and available for immediate purchase. For more information, including detailed specifications and purchasing options, please visit the Thorlabs product page linked in the item data.