Synthetic resin lens system for imaging apparatus

Details Synthetic resin lens system for imaging apparatus Synthetic resin lens system for imaging apparatus

1982-09-30

1985-12-31

Corbin, John K.

350470, G02B 936

Patent

active

045617309

ABSTRACT:
A unitary magnification lens system for an electrophotographic imaging system including a folded optical system is made of synthetic resin. It has an f/5.6 aperture for increased light gathering power to ease the requirements of the imaging system illumination system and a moderately wide field angle of 64.degree. to image documents of up to 81/2.times.14 inches at a time. The lens system is non-vignetting and includes aspherical surfaces on its four elements, arranged in two pairs, that deviate to as much as the tenth order from the conic.

REFERENCES:
patent: 3507560 (1970-04-01), Baker
patent: 4015897 (1977-04-01), Konoma et al.
patent: 4236807 (1980-12-01), Kuehnle
patent: 4264199 (1981-04-01), Kuehnle
patent: 4285579 (1981-08-01), Yamada

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