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August Karl Johann Valentin Köhler (4 March 1866 – 12 March 1948) was a German professor and early staff member of Carl Zeiss AG in Jena, Germany. He is best known for his development of the microscopy technique of Köhler illumination, an important principle in optimizing microscopic resolution power by evenly illuminating the field of view.
- Köhler illumination
Köhler illumination is a method of specimen illumination...
- Köhler illumination
La iluminación de Köhler es una iluminación de las muestras mediante un sistema de microscopía óptica (transmisión y reflexión) introducido en 1893 por August Köhler. problemática Las técnicas de iluminación anteriores (iluminación crítica) produjeron una imagen de la fuente en la muestra, lo que hizo que la iluminación fuera ...
To solve this problem, August Köhler of the Carl Zeiss corporation (yes, the company selling high-end cameras and microscopes today) first introduced a method called “Köhler illumination”. Kohler illumination ensures even illumination of the specimens. This reduces image artifacts and provides high sample contrast.
Köhler war Mitentwickler des Ultraviolettmikroskops [1] und erkannte als erster die Bedeutung der Eigenfluoreszenz in der Mikroskopie. 1908 stellte er der Öffentlichkeit erstmals ein Lumineszenzmikroskop vor.
L'illumination de Köhler est un système d'illumination des échantillons en microscopie optique (transmission et réflexion) introduit en 1893 par August Köhler [1], [2]. Problématique
It was designed by August Köhler in 1893, and overcame limitations of previous types of sample illumination techniques (ie: critical illumination). Prior to the advent of Köhler illumination, the filament of the bulb used to illuminate the sample could be visible in the sample plane. This created what is known as a filament image.
