Laser Optics - F-Theta Lenses

F-Theta lenses are a type of lens used in laser optics to focus a laser beam onto a specific point in a plane. In general, a lens is a piece of transparent material with a curved surface that is used to refract, or bend, light in order to focus it onto a specific point. F-Theta lenses are used in laser cutting, marking, and engraving systems to focus the laser beam onto the material being processed. The term "F-Theta" refers to the fact that the lens has a fixed focus, or focal length, and that it maintains a constant focus over a specific angular range. This allows the lens to focus the laser beam onto a specific point in a plane, regardless of the position of the beam in the plane. F-Theta lenses are designed to provide a high-quality, uniform focus over the entire angular range, which is important for precision laser processing applications.