62-681 50 mm Dia. NIR Metallic Based Neutral Density Filter; OD 3 700-1100nm

The 62-681 is a 50 mm diameter Neutral Density Filter, specifically designed for the Near-Infrared (NIR) spectrum with an Optical Density (OD) of 3, covering the wavelength range of 700-1100nm. This filter is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase through their official website.

The filter is circular in shape, constructed from a metallic based material, identified as 'uvfs mal- 1965' in the material ID. It features a thin lens shape, ensuring minimal distortion and a compact design. The geometry of the filter includes a diameter of 50mm and a thickness of 5mm, providing a robust and manageable size for various applications.

The 62-681 filter is coated on both the front and back with 'edm 47-832', a coating specifically designed to enhance the filter's performance within the NIR spectrum. This coating ensures high transmittance and low reflectance, making it ideal for applications that require precise control over light intensity.