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ISO 9022 Standard Part 11 - Testing Microscopes with Severe Conditions
This article describes a test to determine the robustness of Leica microscopes to mold and fungus growth. The test follows the specifications of the ISO 9022 part 11 standard for optical instruments.
Immersion Objectives
How an immersion objective, which has a liquid medium between it and the specimen being observed, helps increase the numerical aperture and microscope resolution is explained in this article.
Mikroskopische Auflösung: Konzepte, Faktoren und Berechnungen
Dieser Artikel erklärt in einfachen Worten mikroskopische Auflösungskonzepte wie die Airy-Scheibchen, das Abbe-Limit, das Rayleigh-Kriterium und der Halbwertsbreite (FWHM). Außerdem wird der…
Factors to Consider When Selecting a Research Microscope
An optical microscope is often one of the central devices in a life-science research lab. It can be used for various applications which shed light on many scientific questions. Thereby the…
Eyepieces, Objectives and Optical Aberrations
This article covers the components of the eyepieces and how to adjust them correctly to suit your eyes.
Koehler Illumination: A Brief History and a Practical Set Up in Five Easy Steps
In this article, we will look at the history of the technique of Koehler Illumination in addition to how to adjust the components in five easy steps.
Collecting Light: The Importance of Numerical Aperture in Microscopy
Numerical aperture (abbreviated as ‘NA’) is an important consideration when trying to distinguish detail in a specimen viewed down the microscope. NA is a number without units and is related to the…
Optimization of the Interplay of Optical Components for Aberration Free Microscopy
Optical microscopes are used to magnify objects which are otherwise invisible for the human eye. For this purpose high quality optics is necessary to achieve appropriate resolution. However, besides…
Infinity Optical Systems
“Infinity Optics” refers to the concept of a beam path with parallel rays between the objective and the tube lens of a microscope. Flat optical components can be brought into this “Infinity Space”…