Photographic lens system for compact cameras

Details Photographic lens system for compact cameras Photographic lens system for compact cameras

1983-06-07

1986-03-18

Corbin, John K.

350455, 350464, G02B 960, G02B 962

Patent

active

045764484

ABSTRACT:
A photographic lens system for compact cameras comprising a first, second, third, fourth and fifth lenses, the first lens being a positive meniscus lens arranged to be convex toward the object side, the second lens being a biconcave lens, the third lens being a positive lens, the fourth lens being a biconvex lens, the fifth lens being a negative meniscus lens arranged to be convex toward the image side, the photographic lens system being arranged to make aberrations, especially astigmatic difference and positive distortion, small by giving a large thickness to the fourth lens located on the image side by the stop and, at the same time, arranged to have a field angle of 70.degree. or more.

REFERENCES:
patent: 4394073 (1983-07-01), Wakamiya
patent: 4429958 (1984-02-01), Yamaguchi

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