Reflex copier lens

Details Reflex copier lens Reflex copier lens

1976-09-03

1977-12-13

Sacher, Paul A.

350175NG, 350189, G02B 1706, G02B 304

Patent

active

040626253

ABSTRACT:
A lens system primarily for a copier is a plastic and glass lens design of reflex configuration enabling lower manufacturing cost with a higher degree of optical correction than a comparable all glass straight through design of similar optical characteristics. In the preferred embodiment, the plastic element is formed with aspheric surfaces.

REFERENCES:
patent: 3659922 (1972-05-01), McCrobie

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