Cylindrical mirrors are used to corect astigmatism in glasses and rangetfinders, keeping light in a straight line. It is widely used in bar code scanning. projection optical system, laser measurement system and other equipment.
Ruisen has two kinds of cylindrical mirrors, plano- convex and plano- concave. Plano- concave cylindrical mirrors have negative tocal length, which is used tor image restoration and propagation of light speed. A planoconvex cylindrical mirror has a positlve focal length and is used in imaging equipment to collect and focus light.