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US 2022/0187585 A1Published application
Apochromatic microscope objective and microscope
AssigneeCarl Zeiss CMP GmbH
InventorJörg Sprenger
Life of this patent
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Abstract
Apochromatic microscope objective (1) with a focal length f′(Obj), comprising a front lens (L1) made of a high refractive index material, a second lens (L2) which is arranged adjacent to the front lens and which has a thickness (d2) at least as great as a thickness (d1) of the front lens (L1), d2≥d1, and at least one cemented group (Gi), wherein the last cemented group (G1) in the beam path of the microscope objective (1) has a converging cemented surface (FK) with a cemented radius (rK) ranging from −0.95 f′(Obj) to −0.75 f′(Obj).
Claims20
A microscope objective having a focal length, the microscope objective comprising:
- a first lens comprising a high refractive index material;
- a second lens adjacent to the first lens;
- and
- a cemented group comprising a converging cemented surface comprising a cemented radius of from 0.75 times the focal length of the microscope objective to 0.95 times the focal length of the microscope objective,
- wherein:
- the first lens is in front of the second lens along a beam path through the microscope objective;
- a thickness of the second lens is at least as great as a thickness of the front lens;
- the microscope objective is an apochromatic microscope objective.
5 more elements
Dependencies are inferred from the claim text.