![]() Light from the illumination source of the microscope passes through the diaphragm and is focused by the lens(es) onto the specimen.Īfter passing through the specimen the light diverges into an inverted cone to fill the front lens of the objective. The aperture and angle of the light cone must be adjusted (via the size of the diaphragm) for each different objective lens with different numerical apertures.Ĭondensers typically consist of a variable-aperture diaphragm and one or more lenses. ![]() ![]() They act to gather light from the microscope’s light source and concentrate it into a cone of light that illuminates the specimen. On upright microscopes, the condenser is located beneath the stage and serves to gather wavefronts from the microscope light source and concentrate them into a cone of light that illuminates the specimen with uniform intensity over the entire view field.Ĭondensers are located above the light source and under the sample in an upright microscope, and above the stage and below the light source in an inverted microscope. What Is The Function Of a Microscope Condenser?.Adjusting the Field Iris for Koehler Illumination.Adjusting the Iris Diaphragm on the Microscope Condenser.How has the Microscope Condenser Evolved over Time?.
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