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US4264139A Lens system for facsimile 失效
镜头系统传真

Lens system for facsimile
摘要:
A lens system for facsimile comprising a first positive lens component, a second biconcave lens component and a third lens component consisting of a negative lens element and a positive lens element, said lens system having high OTF and assuring very low distortion as well as high intensity for marginal rays.
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