All you need to know about the uses of a concave lens

 

Human beings have a natural optical lens that helps us to see real-life objects with accurate color distinction.

However, some people lose the ability to see far/near objects, for them, a concave/convex lens (resp.) works as an auxiliary source to fulfill their lucid vision dreams.

A concave lens is a diverging lens that helps people see objects at a great distance if they are dealing with myopia; However, for people dealing with hypermetropia, a converging lens, a convex lens, is used, which we will discuss in this article.

We will also discuss the uses of concave and convex lenses along with the use of concave lenses. Read further to know uses of concave lens

 

Concave and convex lens

We find the use of a concave lens in the treatment of vision-related problems and for that, we find the use of a concave lens in daily life; Let's understand how:

A concave lens is used to treat myopia because the lens separates the parallel light rays coming from distant objects. Therefore, a virtual image is formed at the far point of the myopic eye.

Now, when the light rays are at a reasonable distance, objects can be easily focused onto the lens, and thus a clear image is formed on the retina.

Convex lens

A person who can see distant objects clearly, but fails to achieve clear vision when it comes to seeing nearby objects; Let us understand what is the use of a convex lens here?

If a person is hypermetropic, the image of a nearby object is formed behind the retina. This means that light is focused too far back in the eye, causing nearby objects to appear blurry.

At this point in time, a convex lens acts as a gold mine for people dealing with farsightedness.

When a beam of light coming from a distant source reaches the retina, before reaching it, the convex lens converges and serves as a pathway for these rays to converge on the retina.

Uses of concave and convex lenses

So, we'll first start with the use of a concave lens class 10:

We find many uses of a concave lens in daily life, first two uses of the concave lens are:

We find the use of concave lenses in car headlights.

The concave lens acts as a safety factor for driving at night. This lens diverts the light to the far side which helps in seeing distant vehicles clearly at night.

A concave lens is used in peepholes.

We've got a little lens in the middle of our door to see who has rung our doorbell, yes, these are doors to peep at what's outside the door.

Here, the concave lens gives us a bird's eye view of the person standing just in front of the door.

 

The remaining three uses of a concave lens are:

The concave lens in the laser

Various devices such as scanners, medical devices, and CD and DVD players use laser beams. Because laser beams are highly focused and we use small concave lenses to widen the laser beam to reach a specific area faster.

A concave lens in glasses.

(About this, we have discussed myopia in the above text).

in torch or torch

Use of convex lens

magnifying lens

When rays enter the convex lens of the magnifying glass, these rays are focused at a specific focal point in its center.

spectacles

(We have discussed foresight about this in the above lesson).

in cameras

Most of the cameras we use have convex lenses, while some have concave lenses.

Convex lenses help in focusing the image well and magnifying it at the same time.

Microscope lens

A convex lens is also called a microlens.

A simple microscope usually consists of three lenses, one of which (convex lens) forms an inverted and magnified image of microorganisms like bacteria, amoeba, etc.