Reducing lens system

Details Reducing lens system Reducing lens system

1979-01-29

1980-11-18

Corbin, John K.

G02B 916

Patent

active

042342430

ABSTRACT:
A reducing lens system consisting of three lens components, having an aperture ratio of F/8 with the capability of providing a good image over the entire image surface, and a vignetting factor of 100% capable of maintaining brightness of the image to the peripheral portions thereof.

REFERENCES:
patent: 2391114 (1945-12-01), Aklin
patent: 3039359 (1962-06-01), Eggert et al.
patent: 3176582 (1965-04-01), Tronnier et al.

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