40x Microscope objective
AssigneeWarner Lambert Technologies, Inc.
InventorEdward B. Rybicki
Life of this patent
Estimating the term…
Abstract
A five-component 40x microscope objective having a plano-convex positive doublet as the third element providing sufficient color correction to permit classification as a semi-apochromatic objective is disclosed.
Claims3
A semi-apochromatic microscope objective having a numerical aperture of 0.80 which comprises, aligned in sequence along an optical axis, a concavo-convex positive singlet I, a concavo-convex positive doublet II, a plano-convex positive doublet III, a biconvex positive triplet IV and a concavo-convex negative doublet V, said biconvex positive triplet IV comprising a convex-concavo first element, a biconvex second element, and a concavo-convex third element.
Dependencies are inferred from the claim text.