Large aperture retrofocus lens

Details Large aperture retrofocus lens Large aperture retrofocus lens

1994-06-07

1996-04-30

Epps, Georgia Y.

Optical: systems and elements

Lens

Reverse telephoto

359757, G02B 1304

Patent

active

055130461

ABSTRACT:
A large aperture retrofocus lens system is composed of first to sixth lenses arranged in this order from the object side. The first lens has a positive refracting power, the second lens has a negative refracting power, the third lens which is a meniscus lens concave toward the object side, the fourth lens has a negative refracting power, the fifth lens has a positive refracting power and the sixth lens has a positive refracting power.

REFERENCES:
patent: 4449793 (1984-05-01), Nakamura et al.

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