Projection lens

Details Projection lens Projection lens

1980-10-22

1983-01-25

Corbin, John K.

G02B 914

Patent

active

043700322

ABSTRACT:
A compact projection lens for projecting a predetermined area of an original surface upon a solid image pick-up element in original reading such as facsimile or the like, characterized in that F-number is bright, the projection lens has a high resolving power and a high contrast, that is, spherical aberration, coma, curvature of field and distortion are well corrected and the opening efficiency is 100% and magnification is used in the vicinity of 1/10 time.

REFERENCES:
patent: 3876292 (1975-04-01), Velesik
patent: 4264139 (1981-04-01), Maeda

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