Cylindrical lens

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Cylindrical lenses.

A cylindrical lens is a lens which focuses light which passes through onto a line instead of onto a point, as a spherical lens would. The curved face or faces of a cylindrical lens are sections of a cylinder, and focus the image passing through it onto a line parallel to the intersection of the surface of the lens and a plane tangent to it. The lens compresses the image in the direction perpendicular to this line, and leaves it unaltered in the direction parallel to it (in the tangent plane).

See also[edit]

Sources[edit]

  • Jacobs, Donald H. Fundamentals of Optical Engineering. MC Graw-Hill Book Co., 1943.