GENERAL HISTOLOGY

Detailed explanation-1: -Diaphragm or Iris: Many microscopes have a rotating disk under the stage. This diaphragm has different sized holes and is used to vary the intensity and size of the cone of light that is projected upward into the slide.

Detailed explanation-2: -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-3: -Aperture is the hole in the stage through which the base (transmitted) light reaches the stage. Illuminator is the light source for a microscope, typically located in the base of the microscope.

Detailed explanation-4: -The iris diaphragm is a shutter within the condenser that can be controlled by a lever to adjust the amount of light passing through the condenser. The lever can be moved to close the diaphragm and improve contrast. If your field of view is too dark, you can open the diaphragm to let in more light.

Detailed explanation-5: -Iris or diaphragm is the rotating disc found under the stage. Its main role is to control the amount of light passing through the specimen. It is located below the microscope stage and above the condenser lens. An Abbe condenser with an iris diaphragm is often found in most high-quality microscopes.