● Biological microscopes are compound microscopes that are primarily used to observe and study organisms and microorganisms.
●Biological microscopes were the earliest type of microscopes to be invented and the most widely used compound microscope today.
●Conventionally, we usually refer to microscopes that include various accessories such as phase contrast, fluorescence, and polarized light etc. as compound microscopes, to distinguish them from stereo microscopes.
●The most basic biological microscope consists of an eyepiece, an objective lens, a microscope stage, and light source. Both the eyepiece and the objective lens are convex lenses. The objective lens first enlarges the object into a real image. The eyepiece then magnifies the real image again into a virtual image, and finally becomes an inverted magnified virtual image on the retina of the human eye.
●Biological microscopes are usually used to observe transparent or translucent objects, such as animal and plant cells, tissues,bacteria and microorganisms, as well as various kinds of tiny particles by means of sectioning. They are widely used in teaching,medicine, animal or plant research and industrial fields.