This is a 12.5 mm diameter Infrared (IR) Neutral Density Filter, model number 12-008, sourced from the renowned optical components vendor, Edmund Optics. The filter is designed to reduce the intensity of incident light without altering its color composition, making it an ideal choice for various applications involving infrared radiation.
The filter boasts a base shape of a circle, crafted from Germanium Burnett, a material known for its excellent optical properties. It has a thickness of 1 mm, ensuring durability and precision. The filter's coating, 'edm 12-008', is applied on both the front and back surfaces, further enhancing its performance and longevity.
The wavelength of this filter is 588 nm, and it is designed to operate in the infrared spectrum, specifically between 2-14 µm. This makes it suitable for a wide range of applications, including astronomy, biomedical research, and machine vision, among others.
The filter's geometry is that of a thin lens, which not only contributes to its compactness but also minimizes optical aberrations. This filter is currently in stock and can be purchased directly from the vendor's website using the provided weblink.