Variable anamorphic ratio anamorphic lens

摘要

(57) Abstract With the basic lens the anamorphic lens attachment which is used. This attachment offers variable anamorphic ratio. The attachment the 1st lens group (106) which in 1st direction (104) possesses correct refracting power and, the 2nd lens group (108) which possesses negative refracting power in 1st direction and, includes with the 3rd lens group (110) which possesses correct refracting power in 1st direction. As for three lenses group it is on the same axis (220) which is perpendicular to the optical axis (102). The 2nd lens group movement is located unrestrictedly with the 1st lens group and the basic lens. The 3rd lens group is categorized with the 2nd lens group and the basic lens which is from the 1st lens group to fixed distance. The each lens group of the attachment has the refracting power of neutral in the 2nd direction which is almost perpendicular to 1st direction.