Yutai's cylindrical lenses are great optical components for requiring one-dimensional shaping of a light source.They are manufactured from fine annealed glass and offered in either rectangular or Circular,plano-concave or plano-convex configurations, which are meant to expand or focus light, and they can be coated with a variety of multi-layer antireflection coatings.Cylindrical lenses are used to provide focusing power in one section only. For illumination or detection of light from line sources. Also used to anamorphic compression of beams and images. Especially widely used to anamorphic compression of LD (laser diode) output beam.