A magnifying lens is a convex lens that has a shorter focal length and magnifies an object by angular magnification. It's also called a simple microscope. The convex lens creates an image that is virtual, erect, and large in a simple microscope. A microscope is a durable, high-quality instrument that can last for 25-30 years if maintained properly. If we hold an item near the lens, it creates an image taller than the actual thing. We use magnifying glasses to view, in various magnification devices such as telescopes, compound microscopes, and reading glasses as an eyepiece.
A basic microscope is used to see an object's enlarged picture. A Dutchman named Antonie Van Leeuwenhoek invented the first simple microscope, which comprised a small single high-powered converging lens for viewing freshwater microbes. This formed the basis of the principle of the light microscope.
Simple microscopes comprise several mechanical and optical components. The mechanical components support the microscope, holding the specimen and controlling some of the microscope's operations. The optical components expand the picture of the specimen and allow the user to observe the larger image.
● Body: The arm present on a microscope connects the eyepiece to the microscope base. The body connects the microscope with the base and provides stability to the entire equipment.
● Nosepiece: The rotating nosepiece is a turret containing two or more objective lenses to improve the microscope's magnification. We include this in both current types of simple microscopes and compound microscopes.
● Stage: The stage is considered to be an area where all the slides are inserted, which is then magnified and viewed from the eyepiece. A special stage clip is often utilized to ensure that the specimens placed on the slides do not get displaced.
● Eyepiece lens: The eyepiece houses the ocular lens, which is used to magnify the specimen. In addition, an objective biconvex microscope is used to magnify specimen images. Basic microscopes have several objective lenses that can be adjusted to magnify specimens. The most common options are 10x and 15x.
● Eyepiece: This lens was used as an eyepiece for the first rudimentary microscopes. However, certain modern microscopes include an optical lens that allows you to see the specimen. In addition, eyepieces with magnification can be used on compound microscopes.
● Eyepiece tube: The Eyepiece Tube is a place where the ocular lens and the eyepiece are connected. Eyepiece tube can be found near the Microscope stage.
● Mirror: Basic microscopes use a simple mirror to reflect light onto their object. Some microscopes have a dedicated light source, which can be adjusted.
In reality, most basic microscopes have a magnification capacity of just 10x. This is because the simple microscope's overall magnification is restricted to one lens. We calculate the magnifying power of a basic microscope as M = 1 + D/F, where D is the shortest distance of distinct vision and F is the focal length of the convex lens. The higher the magnifying power of the microscope, the shorter the focal length of the lens. However, clarity and resolution are primarily determined by the contrast between the specimen and aberrations in the lens. This works for thin and semi-transparent materials that allow light to flow through with minimum absorption. We can also stain it to increase contrast and, therefore, reveal more detail. The shape of the lens and how it is used also affect the final image resolution.
We use a biconvex lens in simple microscopes to magnify the image of a specimen. These lenses comprise two glass components with color-correcting capabilities. The bigger the enlarged picture, the closer the item is to the lens. A light source sends a certain quantity of light through the specimen and then through the lens. We can adjust the size and intensity of the light using the microscope's condenser and diaphragm for improved image resolution.