Stereo Microscope parts

Every component of the stereo microscope has its own function. The parts included with this type of microscope can vary greatly depending on the configuration and uses it will serve. Each part of a stereo microscope is labeled in the diagram below. This example is a typical classroom type stereo microscope with track stand and built-in illumination.

Stereo Head: This is the moveable top portion of the microscope and the stereo head holds the two adjustable eyepieces.

Ocular Lens: These are the eyepieces through which the viewer looks at the specimen. The eyepieces are typically set at 10x magnification. It is also possible to upgrade to a higher magnification level.

Diopter Setting: It compensates for the focusing differences between the left and right eye. Setting it correctly prevents eye strain.

Objective Lens: Stereo microscopes have two separate objectives, each one connecting to one of the eyepieces. The eyepiece and the objective lenses collectively determine the magnification of the microscope. They can have a fixed single objective, a rotating multiple lens turret or a zoom. It allows you to change the magnification levels depending on the applications.

Focus Knob: Stereo microscopes usually have one focus knob. Helps move the head of the microscope up and down to bring a sharp image of the object. Most dissecting microscopes have standard “rack and pinion” focusing. Rack is the track with teeth and pinion is the gear that rides on the teeth. The knob helps the pinion move along the rack.

Stage Clips: Stage clips help to hold the slides or other thin objects in place on the stage.

Stage Plate: It is located directly under the objective lens. It is where the specimen is placed for viewing. Some stereo microscopes have reversible black and white stage plates to provide appropriate contrast with the object being viewed.

Illumination: Many microscopes have both top and bottom lighting. Some microscopes only have one source of illumination, top or bottom. The top lighting shines down on the specimen and reflects light off them. The bottom lighting transmits light up through the stage to show translucent specimens.