Lens system for a copier

Details Lens system for a copier Lens system for a copier

1988-01-29

1989-06-06

Arnold, Bruce Y.

350450, G02B 962

Patent

active

048366641

ABSTRACT:
A lens system suitable for use in a full color copier has a 6-unit 8-element basic structure which is completely symmetrical with its stop as its center of symmetry. The lens system includes along its optical axis in the order mentioned from its object side: a first unit including a first lens; a second unit including a second lens; a third unit including third and fourth lenses; a stop; a fourth unit including fifth and sixth lenses identical to the fourth and third lenses, respectively; a fifth unit including a seventh lens identical to the second lens; and a sixth unit including an eighth lens identical to the first lens. The lens system also satisfies the following conditions.

REFERENCES:
patent: 2671380 (1954-03-01), Baker

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