Patent Number: 6,310,731

Title: Anastigmatic anamorphic lens

Abstract: An anastigmatic anamorphic lens, in particular for the projection of Cinemascope films, with a high aperture and an anamorphic factor of greater than 1.7. The anastigmatic anamorphic lens comprises a main objective with considerable positive astigmatism. A main objective which might otherwise be unsuitable for projection because of aberration phenomena, in combination with cylindrical afocal attachments, has its image defects supplemented with the typical aberrations of the attachments in such a way as to achieve an optimum overall result.

Inventors: Wartmann; Rolf (Hallgarten, DE), Schauss; Udo (Waldbockelheim, DE)

Assignee: Jos. Schneider Optische Werke GmbH

International Classification: G02B 13/08 (20060101); G02B 013/08 (); G02B 003/00 ()

Expiration Date: 10/30/2018