87-197 25 mm Dia. Infrared (IR) Neutral Density Filter; OD 0.6 2-14µm

The 87-197 is a Neutral Density Filter with a 25 mm diameter, designed for use in the infrared (IR) spectrum with a wavelength of 588 nm. This filter is manufactured by Edmund Optics, a leading vendor in the optical industry, and is available for purchase through their website. The filter's catalog number is 87-197, and it is currently in stock.

This filter is made of Germanium Burnett, a material known for its excellent optical properties in the IR spectrum. It features a thin lens shape, with a thickness of 1 mm, making it suitable for use in various optical systems. The filter is coated on both the front and back sides with the EDM 12-005 coating, which enhances its performance and durability.

The Neutral Density Filter is a type of optical filter that reduces the intensity of light without altering its color. This particular filter has an Optical Density (OD) of 0.6, which corresponds to a transmission of 32% (1/3) of the incident light. This makes it suitable for applications where moderate light reduction is required.