![]() What is role of condenser and iris diaphragm in critical illumination? This variable aperture does not affect the optical resolution, numerical aperture, or the intensity of illumination. The field diaphragm in the base of the microscope controls only the width of the bundle of light rays reaching the condenser. Medical Definition of iris diaphragm : an adjustable diaphragm of thin opaque plates that can be turned by a ring so as to change the diameter of a central opening usually to regulate the aperture of a lens (as in a microscope) What is the function of the field diaphragm on a microscope? What is an iris diaphragm on a microscope? What is the function of an 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. 6 What is the function of the iris diaphragm lever on?.5 What is the function of the diaphragm in a microscope?. ![]() 3 When should the iris diaphragm be used quizlet?.2 What is the function of the field diaphragm on a microscope?.1 What is the function of an iris diaphragm?.
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