convex lenses uses with examples
Answers
Explanation:
Use
It is used to correct long-sightedness or hypermetropia.
Example
Lights, flashlights, laser, binocular etc
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Definition:
This type of lens is thicker at the center and thinner at the edges.
An optical lens is generally made up of two spherical surfaces. If those surfaces are bent outwards, the lens is called a biconvex lens or simply convex lens. These types of lenses can converge a beam of light coming from outside and focus it to a point on the other side. This point is known as the focus and the distance between the center of the lens to the focus is called the focal length of convex lens. However, if one of the surfaces is flat and the other convex, then it is called a plano-convex lens.
Difference between convex and concave lens:
There is another type of lens known as concave lens. The major differences between concave and convex lens two are:
CONVEX CONCAVE
This lens converges a straight beam of light. This lens diverges a straight beam of light.
This lens is thicker at the centre and gets thinner as we move towards the edges. This lens is thinner at the centre and gets thicker as we move towards the edges.
Convex lens
A concave lens will always produce diminished, upright and virtual image of the object in front of it. But the nature of the image produced by a these lenses depends upon the position of the object. It can form both real and virtual images depending on where the light is coming from.
Uses of convex lens
These are used for a variety of purposes in our day-to-day lives. For example,
The lens in the human eyes is the prime example. So the most common use of the lens is that it helps us to see.
Convex lens
Another common example of the use of this type of lens is a magnifying glass. When an object is placed in front of it at a distance shorter than the focal length of the lens, it produces a magnified and erect image of the object on the same side as the object itself.
It is used to correct Hypermetropia or long-sightedness.
It is used in cameras because it focuses light and produces a clear and crisp image.
More generally these are often used in compound lenses used in various instruments such as magnifying devices like microscopes, telescopes and camera lenses.
A simple kind of these lenses can focus light into an image, but that image won’t be of a high quality. For correcting the distortions and aberrations, it is better to combine both types of lenses.
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