Large aperture telephoto lens system

Details Large aperture telephoto lens system Large aperture telephoto lens system

1975-02-13

1976-12-14

Sacher, Paul A.

G02B 962

Patent

active

039972488

ABSTRACT:
A large-aperture telephoto lens system with high telephoto ratio wherein a negative thick meniscus lens is arranged in the rear lens group for correcting the negative spherical aberration and negative coma which are produced by the positive meniscus lenses with high refractive indices positioned on the object side.

REFERENCES:
patent: 3738739 (1973-06-01), Glatzel et al.

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