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US 12,699,258 B2Granted
Lens system for wavefront modulation
AssigneeTechnion Research & Development Foundation Limited
InventorsYoav Shechtman, Boris Ferdman, Nadav Opatovski, Elias Nehme, Reut Kedem
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Abstract
An objective lens system comprises a set of lenses, arranged along a common optical axis to form a back focal plane. The objective lens system is a component in a microscope. The objective lens system also comprises an optical mask at the back focal plane, and a housing encapsulating the set of lenses and the optical mask.
Claims18
An objective lens system, comprising:
- a set of lenses, arranged along a common optical axis to form a back focal plane;
- an optical mask at said back focal plane, said optical mask being selected to extend a characteristic depth of field (DOF) of said set of lenses;
- and
- a housing encapsulating said set of lenses and said optical mask;
- wherein the objective lens system is a component in a microscope and is characterized by a depth of field of at least 4 μm for NA of about 1.49 oil immersion objective, or at least 6 μm for NA of about 1.35 silicon oil objective, or at least 20 μm for NA of about 0.75 air objective, or at least 50 μm for NA of about 0.3 air objective.
2 more elements
Dependencies are inferred from the claim text.