Lens
OwnerRobert Brunner, Knut Hage +3inventors
InventorsRobert Brunner, Knut Hage, Hans-Jurgen Dobschal, Klaus Rudolf, Reinhard Steiner
Life of this patent
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Abstract
In an objective (1), in particular a microscope objective, said objective comprising an object-side first optical group (5) with a positive refractive power, and a second optical group (6), arranged following the first optical group (5), with a negative refractive power, and said first optical group (5) including several refractive elements (7, 8, 9, 10), the first optical group (5) comprises at least one diffractive element (11) having a refraction-enhancing and achromatizing effect.
Claims20
An objective (1), in particular a microscope objective, said objective comprising a first optical group (5) with a positive refractive power, and a second optical group (6), arranged following the first optical group (5), with a negative refractive power, and said first optical group (5) including several refractive elements (7, 8, 9, 10), characterized in that the first optical group (5) comprises at least one diffractive element (11), which has a refraction-enhancing and achromatizing effect.
Dependencies are inferred from the claim text.