Patent ID: 7289272
Filing Date: 2007-10-30
Classification: G02B

Abstract:
1. An optical system comprising: a primary lens group having a central beam path therethrough and including: an anamorphic lens group lying on the central beam path and positioned between the front lens group and the rear lens group, wherein the anamorphic lens group includes at least one optically powered anamorphic lens that has a different enlargement of a light beam passing therethrough along a first transverse axis positioned locally perpendicular to the central beam path than along a second transverse axis positioned locally perpendicular to the central beam path and locally perpendicular to the first transverse axis; an anamorphic lens group mount; a secondary lens group; a secondary lens group mount, wherein the anamorphic lens group mount and the secondary lens group mount respectively enable the anamorphic lens group and the secondary lens group to be alternately and controllably inserted into and removed from the central beam path; and an image transceiver that is either