Condition

• stigmatism

  (optics) condition of an optical system (as a lens) in which light rays from a single...

• astigmatism

  (optics) defect in an optical system in which light rays from a single point fail to...

Also contains

• meniscus

  (optics) a lens that is concave on one side and convex on the other.

• catoptrics

  Branch of optics dealing with formation of images by mirrors.

• holography

  The branch of optics that deals with the use of coherent light from a laser in order...