Simple Microscope - Definition, Used, Features, and more


What is a Simple Microscope?

A simple microscope is a type of optical microscope that uses a single lens to magnify objects. Simple microscopes are the most basic type of microscope and are often used in schools and homes for educational purposes. The maximum magnification power of Simple Microscopes is between 50x and 100x, which means that they can make an object appear 50 to 100 times larger than it actually is. To use of simple microscope, you place the object you want to look at on the stage (a platform where the object is placed), and then use the knob to focus the lens until the image is clear. The lens used in a simple microscope is a convex lens. The simple microscope used for the see the magnified image of an object. For the construct of simple microscope, the biconvex lens used.

Working of Simple Microscope

As is well known, the simple light microscope is frequently employed in microbiology to obtain a magnified picture of the samples. A thin, transparent object to allow light coming from the light source to flow through it. A biconvex lens is used to obtain an enlarged virtual image. The lens must be close to the sample in order to get increased magnification and resolution. Contrast can be obtained by looking at the sample's specifics. Staining the sample achieves this. The size and intensity of the light beam can be changed with the aid of a condenser or a diaphragm in order to obtain contrast in the image. The maximum magnification produced by a simple microscope is 50x - 100x. Biconvex lens of simple microscope used to see, enlarge the image.

Uses of Simple Microscope

There are various application of Simple Microscope.

  • Simple Microscope used in pendology (study of soil particles).
  • A simple microscope used to find out various skin diseases in dermatology.
  • This microscope used in microbiology to study specimens of algae and fungi etc.
  • A simple microscope be used by jewellers to get the magnified view of the small parts of the jewellery.
  • To examine an enlarged image of book calligraphy, fiber texture, or textile threads.

Components of Simple Microscope

Simple microscopes are made up of a number of mechanical and optical parts. The mechanical parts hold the specimen, support the microscope, and operate the microscope in various ways. The user can view the enlarged image thanks to the optical components, which enlarge the image of the specimen.


  • Body: A microscope's arm connects the eyepiece to the base of the instrument. The body stabilizes the complete piece of apparatus and joins the microscope to the base.
  • Eyepiece: The ocular lens, which is used to magnify the specimen, is housed in the eyepiece. Additionally, photographs of the specimen are magnified using an objective biconvex microscope. Simple microscopes include a number of adjustable objective lenses for enlarging specimens. The magnification of simple microscope range between 50x - 100x.
  • Stage: It serves as the platform on which slides with samples are placed.
  • Objectives Lens: The specimen or item is carefully seen and observed using the objective lenses. The 10X, 40X, and 100X magnification ranges for the objective lenses are available. The lower power lens has the shortest objective, whereas the higher power lens has the longest objective.
  • Diaphragm: The diaphragm will assist in controlling the appropriate amount of light that enters the stage.
  • Eyepiece Tube: Where the ocular lens and the eyepiece are attached is called the Eyepiece Tube. In proximity to the microscope stage is the eyepiece tube.
  • Nosepiece: To increase the magnifying power of the microscope, the rotating nosepiece is a turret with two or more objective lenses. This is incorporated into both the existing varieties of compound and simple microscopes.

Principle of Simple Microscope

When a sample is placed within the microscope's focus, a virtual, upright, and enlarged picture is obtained at the shortest distance of distinct vision from the eye that is held at the lens, according to the working principle of a simple microscope. The microscope's magnification is determined by the total length of the tube, rather than just a portion of it. This means that for any given objective lens and eyepiece combination, there are many ways to arrange the microscope's components in order to obtain a given magnification.

Characteristics of Simple Microscope

There are many characteristics of simple microscope.

  • A simple microscope has an objective lens.
  • This microscope is very lightweight and easy to use.
  • In the simple microscope, a concave reflecting mirror is used.
  • For moving the limbs up and down, has an adjustment screw used for focusing.
  • Simple microscope price is less to other microscope.


In conclusion, the simple microscope is a great tool for education and home use. They are easy to use and relatively inexpensive. With a little practice, anyone can learn to use a simple microscope to magnify objects and get a closer look at the world around them.


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