Photographic lens system

Details Photographic lens system Photographic lens system

1984-03-22

1986-02-04

Corbin, John K.

350450, 350471, G02B 934

Patent

active

045681511

ABSTRACT:
A photographic lens system for compact cameras comprising a first positive meniscus lens component having a convex surface on the object side, a second lens component having negative refractive power, a third lens component having positive refractive power and a fourth negative meniscus lens component having a convex surface on the image side, at least one of said four lens components being a cemented doublet. Said photographic lens system has a relative aperture of F/2.8, aberrations corrected sufficiently favorably and a short total length.

REFERENCES:
patent: 2670659 (1954-03-01), Tronnier
patent: 4235521 (1980-11-01), Imai
patent: 4303313 (1981-12-01), Imai et al.
patent: 4389099 (1983-06-01), Imai
patent: 4390250 (1983-06-01), Imai
patent: 4456345 (1984-06-01), Fujibayashi

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