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Cutaway diagram of Hologon lens, designed by Erhard Glatzel for Zeiss (from US Pat. 3,661,447) [20] The Contarex Hologon was a fixed-lens camera that used the same stripped-down second-generation chassis as the microscope camera, which removed the reflex mirror and viewfinder mechanisms, featuring mechanically-controlled shutter speeds ranging ...
Description: Binocular compound microscope from 1914; Carl Zeiss (1816–88), Jena, Germany; materials: brass, metal, glass; owner: The Golub Collection, University ...
The sub-stage condenser focuses light through the specimen to match the aperture of the objective lens system. The Abbe condenser is named for its inventor Ernst Abbe, who developed it in 1870. The Abbe condenser, which was originally designed for Zeiss, is mounted below the stage of the microscope.
Diagram of a simple microscope. There are two basic types of optical microscopes: simple microscopes and compound microscopes. A simple microscope uses the optical power of a single lens or group of lenses for magnification. A compound microscope uses a system of lenses (one set enlarging the image produced by another) to achieve a much higher ...
In microscopy, NA is important because it indicates the resolving power of a lens. The size of the finest detail that can be resolved (the resolution) is proportional to λ / 2NA , where λ is the wavelength of the light. A lens with a larger numerical aperture will be able to visualize finer details than a lens with a smaller numerical ...
First workshop of Carl Zeiss in the center of Jena, c. 1847 Carl Zeiss Jena (1910) One of the Stasi's cameras with the special SO-3.5.1 (5/17mm) lens developed by Carl Zeiss, a so-called "needle eye lens", for shooting through keyholes or holes down to 1 mm in diameter 2 historical lenses of Carl Zeiss, Nr. 145077 and Nr. 145078, Tessar 1:4,5 F=5,5cm DRP 142294 (produced before 1910) Carl ...
Köhler illumination is a method of specimen illumination used for transmitted and reflected light (trans- and epi-illuminated) optical microscopy.Köhler illumination acts to generate an even illumination of the sample and ensures that an image of the illumination source (for example a halogen lamp filament) is not visible in the resulting image.
The first Tessar appeared with a maximum aperture of f /6.3, but by 1917, the maximum aperture had been increased to f /4.5.In 1930, Ernst Wandersleb and Willy Merté from Zeiss developed Tessar lenses with apertures of f /3.5 and f /2.8.