Plano-convex cylindrical lenses

The Plano spherical lens acts symmetrically on the incident light in both directions,while the convex cylindrical lens acts in only one direction on the incident light.A typical application is to shape a deformed beam with a pair of plano-convex cylindrical lenses.A pair of positive plano-convex cylindrical lenses can be used to collimate and round the output of the laser diode.Anoth- er possible application is to focus the diverging beam onto the detector array with a single plano-convex cylindrical lens.In order to minimize the spherical aberration,when the collimated beams are concentrated into one line,the collimated light should be incident on the curved surface of the lens,and when the quasi-linear source is used,the line source should be incident on the plane of the lens.