Camera lens system

Details Camera lens system Camera lens system

1994-12-15

1997-04-01

Epps, Georgia Y.

Optical: systems and elements

Lens

Multiple component lenses

G02B 912

Patent

active

056172559

ABSTRACT:
A camera lens system consists of first to third lens elements arranged in this order from the object side. The first lens element is a meniscus lens having a weak refractive power and concave toward the object side, the second lens element is a lens having a positive refractive power and the third lens element is a lens having a negative refractive power. A stop or an assumed stop is disposed close to the object side end of the lens system or on the object side of the same formula .nu..sub.3 .ltoreq.40 is satisfied wherein .nu..sub.3 represents the Abbe's number of the third lens element.

REFERENCES:
patent: 12420 (1992-05-01), Martin
patent: 2855824 (1958-10-01), Schade

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