Brand: Acos
The Acos GP-91 is a -1 optical lens. It is a type of lens that decreases the focal length of a light path by a factor of one. Essentially, it has a focal length that is less than that of the standard lens. This makes it a useful component in various optical systems, such as telescopes, microscopes, and cameras, as it can help to magnify or reduce images to the desired size or field of view. The "GP" in the product name likely stands for "glass-porcelain," which refers to the materials used to manufacture the lens. The "91" is the catalogue number assigned by Acos, a global supplier of precision optics and photonics components, to identify this specific lens.