The centre of the lens is called the optical centre C. In a ray diagram, a converging lens is ... The type of image formed by a convex lens depends on the lens used and the distance from the ...

A plano-convex cylindrical lens is used to condense light in one axis. A positive plano cylindrical lens is able to create a line image from a point of light, to change the aspect ratio of an image or ...

A plano-convex cylindrical lens is used to condense light in one axis. A positive cylindrical lens is able to create a line image from a point of light, to change the aspect ratio of an image or to ...