GENERAL HISTOLOGY

Detailed explanation-1: -Iris diaphragm dial: Dial attached to the condenser that regulates the amount of light passing through the condenser. The iris diaphragm permits the best possible contrast when viewing the specimen.

Detailed explanation-2: -Iris Diaphragm controls the amount of light reaching the specimen. It is located above the condenser and below the stage. Most high quality microscopes include an Abbe condenser with an iris diaphragm.

Detailed explanation-3: -Field Diaphragm-an iris diaphragm, usually located on the base of the microscope that controls the amount of light that enters the condenser diaphragm.

Detailed explanation-4: -Condenser Diaphragm-This diaphragm controls the amount of light entering the lens system. This feature is useful for viewing unstained biological specimens that are translucent. Reducing the amount of light improves contrast, making the specimen “stand out” against the background.

Detailed explanation-5: -The iris diaphram is an adjustable shutter which allows you to adjust the amount of light passing through the condenser. The angle determines the Numerical Aperture (NA) of the condenser. This diaphragm, generally called the aperture diaphragm, is one of the most important controls on the microscope.