Patent · US Active

Microscope and method for generating an overview image of a sample

US12038570B2 · kind B2 · utility

0Cited by

0References

17Claims

0Family size

Assignee

LEICA MICROSYSTEMS CMS GMBH · DE

Inventors

Christian Schumann · Gießen, DE
Christian Schulz · Duisburg, DE
Alexander W. Weiss · Linden, DE

Key dates

Filing date	Jul 8, 2021
Grant date	Jul 16, 2024
Priority date	—
Expiry date	Dec 6, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG02B21/365
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A microscope includes: an optical system including an immersion objective for an immersion medium of a predetermined refractive index; an aperture stop; and a processor for setting an immersion-free imaging mode in which the optical system is operated without immersion medium. The processor controls the aperture stop in the immersion-free imaging mode to set a numerical aperture of the immersion objective to a reduced value which is lower than a nominal value of the numerical aperture, the numerical aperture being equal to the nominal value when the optical system is operated using the immersion medium without reducing the numerical aperture by the aperture stop. The processor controls the optical system in accordance with the reduced value of the numerical aperture in the immersion-free imaging mode to generate at least one image representing the overview image of the sample.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.