Plano-concave Cylindrical Lens

Plano-concave cylindrical lens. Used to control the size of a beam of light in a specific direction, forming a divergent linear virtual image. Its focal length is negative, used to concentrate parallel or divergent beams of light onto a line or change the aspect ratio of the image. Applied in fields such as laser scanners, spectrometers, dye lasers, acoustic optics, optical processors, etc.