43-951 139.7 mm Dia. Black Optical Cast Infrared (IR) Longpass Color Filter

The 43-951 is a circular color glass filter, 139.7 mm in diameter, with a thickness of 1.5 mm, manufactured by Edmund Optics. This filter is designed for use in the infrared (IR) spectrum, specifically for longpass applications, and features a catalog number of 43-951.

The filter's primary function is to block or reject shorter wavelengths while transmitting longer wavelengths. In this case, it allows wavelengths of 588 nm and longer to pass through while blocking shorter wavelengths. This makes it ideal for applications where the detection or imaging of longer wavelengths is required, such as infrared photography or thermal imaging.

The 43-951 filter is made from UVFS Mal-1965, a specific material known for its optical properties in the infrared spectrum. It is coated on both the front and back with Edmund Optics' IR-VIS coating, which is designed to enhance its performance in the infrared range while also maintaining visibility in the visible spectrum.

The filter is shaped as a thin lens, which is a type of lens with a small thickness compared to its diameter. This shape allows for minimal distortion and a wide field of view, making it suitable for a variety of optical systems.

The filter is currently in stock and available for purchase through the Edmund Optics website, as indicated by its weblink status. For more detailed information or to make a purchase, users can follow the provided weblink.