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The aperture diaphragm acts essentially as a control for resolution and contrast in optical microscopy. This light comes from the microscope’s light source, and is gathered by the condenser, before being regulated by the diaphragm, then passing through the specimen. The main function of an iris diaphragm of a microscope is to control the amount of light that reaches the specimen. What is the function of the field iris diaphragm? The field diaphragm controls how much light enters the substage condenser and, consequently, the rest of the microscope. What is the diaphragm on a microscope used for? a composite diaphragm with a central aperture readily adjustable for size, used to regulate the amount of light admitted to a lens or optical system. What is the function of the iris diaphragm?Īn iris diaphragm can reduce the amount light that hits a detector by decreasing the aperture, usually with “leaves” or “blades” that form a circle.
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