Back to results
US 2004/0070846 A1Published application
Objective
OwnerHans-Juergen Dobschal, Klaus Rudolf +3inventors
InventorsHans-Juergen Dobschal, Klaus Rudolf, Reinhard Steiner, Robert Brunner, Knut Hage
Life of this patent
Estimating the term…
Abstract
In an objective, in particular a microscope objective, wherein the objective has a first optics group on the object side with positive refractive power and a second optics group with negative refractive power following the first optics group, and wherein the first optics group contains a plurality of refractive elements, the first optics group contains at least one diffractive element with a refraction-increasing and achromatizing effect.
Claims22
An objective, in particular a microscope objective, comprising:
- a first optics group with positive refractive power;
- a second optics group with negative refractive power following the first optics group;
- said first optics group containing a plurality of refractive elements;
- and said first optics group also containing at least one diffractive element with a refraction-increasing and achromatizing effect.
1 more element
Dependencies are inferred from the claim text.