Convex Lens and Its Uses
Convex lenses are thicker at the middle. Rays of light that pass through the lens are brought closer together (they converge). A convex lens is a converging lens. When parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.A convex lens is like that of a magnifying glass that collectors use to look more closely at specimens. Convex lenses are referred to as converging lenses because they bend light toward a focal point whereas concave (diverging lenses) bend light away from a focal point.
Most high-quality cameras, telescopes and binoculars use concave lenses to improve the quality of the images they provide. Microscopes and reflecting telescopes make use of a concave mirror, a plane mirror, and a convex lens, while refracting telescopes use two convex lenses.
Uses of a convex lens are
- A convex lens is used in microscopes and magnifying glasses to subject all the light to a specific point.
- A convex lens is used as a camera lens in cameras as they focus light for a clean picture.
- A convex lens is used in the correction of hypermetropia.
Why is a convex lens used in a camera?
A concave lens is a lens that possesses at least one surface that curves inwards. It is a diverging lens, meaning that it spreads out light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia).
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