Street Address: Kaixuan Road
City: Changchun
Province: Jilin
Country/Region: China
Optical BK7 Cylindrical Lens Cylindrical lens is used to correct astigmatism in the eye, and, in rangefinders, to produce astigmatism, stretching) a point of light into a line.They are available in either plano concave or plano convex configurations. Plano-Concave Cylindrical lenses have a negative focal length and are used for image reduction or to spread light. Plano-Convex Cylindrical lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications.Cylindrical lens is used to correct astigmatism in the eye, and, in rangefinders, to produce astigmatism, stretching) a point of light into a line.They are available in either plano concave or plano convex configurations. Plano-Concave Cylindrical lenses have a negative focal length and are used for image reduction or to spread light. Plano-Convex Cylindrical lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications.