This is the 13-217 Neutral Density Filter from Hoya, available through Edmund Optics. It boasts a 12.5 mm diameter and a thickness of 1.2 mm, making it a compact yet efficient solution for various optical applications. The filter is designed with an Absorptive Neutral Density coating, specifically engineered to minimize light transmission across the entire 750-1550nm spectral range. This feature ensures consistent color balance and maintains the image quality, even when working with high-intensity light sources.
The front and back surfaces of the filter are coated with the same EDM 13-217 coating, providing excellent protection and enhancing the overall durability of the component. The filter's thin lens shape allows for seamless integration into optical systems, minimizing the risk of vignetting and maximizing the field of view.
The 13-217 Neutral Density Filter is part of the UVFS MAL-1965 material family, which further expands its compatibility with a wide range of optical elements and systems. With its extensive weblinks and catalog number, users can easily access additional information, place orders, or check the filter's availability through the Edmund Optics website.