High relative aperture Gauss type lens

Details High relative aperture Gauss type lens High relative aperture Gauss type lens

1986-12-05

1988-01-05

Corbin, John K.

350432, G02B 900, G02B 1134

Patent

active

047172452

ABSTRACT:
A high relative aperture Gauss type lens comprising, from front to rear, a first lens unit including at least one positive lens, a negative meniscus-shaped second lens convex toward the front, a positive third lens with its front surface of strong convex curvature toward the front, a negative fourth lens with its rear surface of strong concave curvature toward the rear, a negative fifth lens with its front surface of strong concave curvature toward the front, a positive sixth lens with its rear surface of strong convex curvature toward the rear, a negative meniscus-shaped seventh lens convex toward the rear, a positive meniscus-shaped eighth lens convex toward the rear, a positive ninth lens, and a positive meniscus-shaped tenth lens convex toward the front.

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