Another term for a compound microscope is a biological microscope or a high power microscope. When compound microscopes were first introduced they used a mirror to direct light up to the eyepiece. Today microscopes typically have a built-in light (usually LED because it is bright, the bulbs last a long time, and it is a cool light that will not damage living specimens).
The diagram below shows the popular HS-1M high school compound microscope and details some of the parts of the microscope.
If you have any questions about compound microscopes please contact Microscope World.