Lens system for micro film

Details Lens system for micro film Lens system for micro film

1978-08-09

1980-04-29

Sacher, Paul A.

350214, G02B 1314, G02B 964

Patent

active

042003520

ABSTRACT:
A lens system for micro film which provides high resolution over a wide range with a ultraviolet ray, and has transmittance sufficient for said ray and a long working distance on the image side. Said lens system comprises a first positive lens component, a second meniscus lens component, a third negative lens component, a fourth cemented doublet component, a fifth positive cemented doublet component, a sixth positive lens component and a seventh cemented doublet component consisting of a negative lens element and a positive lens element.

REFERENCES:
patent: 3817602 (1974-06-01), Kazamaki et al.

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