Retrofocus type wide-angle lens system

Details Retrofocus type wide-angle lens system Retrofocus type wide-angle lens system

1978-09-21

1980-06-10

Clark, Conrad J.

G02B 1132

Patent

active

042069750

ABSTRACT:
A retrofocus type wide-angle lens system for use in micro readers, micro printers, facsimiles, etc. comprising a first negative meniscus lens component, a second positive lens component, a third biconcave lens component, a fourth positive lens component, a fifth positive lens component and a sixth negative meniscus lens component. Said lens system assures high resolution even at marginal portions of image and has a high aperture efficiency.

REFERENCES:
patent: 3551030 (1970-12-01), Gilkeson et al.
patent: 3731989 (1973-05-01), Shimizu
patent: 3936153 (1976-02-01), Ogura

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