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Did you ever look through a magnifying glass or eyeglass? If yes, you have already put on a spherical lens! Before we explore what is a spherical lens, how does it work & the significance of spherical lens in optics & photography, let us first know more about lens in general. We will also take a closer look into the various kinds of spherical lens and their applications in our daily lives.
One type of lens that is a spherical lens which is shaped like a ball. That means a circular shape which may be made of glass or plastic. Spherical lenses are an important type of lens that allows you to make things appear larger or clearer. The shape of the lens that light rays pass through, in the case of a spherical lens, bends those rays. And this bending, is what alters our perspective. Spherical lenses are common in everyday items we are all familiar with — eyeglasses, cameras, and even microscopes. They are crucial in assisting us to achieve clarity.
Normally, light travels in a straight line, which is the way it works in our everyday observations. But when light passes through a spherical lens, something cool happens — the light bends. The shape and size of the lens therefore determines how much the light will bend. Spherical lenses have two different sides. The outwardly bulging side is known as convex, while the inwardly curving side is known as concave.
With light hitting the convex part of the lens, the light bends towards the center. Then, on the concave side, when the light passes through, it is bent away from the center. When light is bent, it focuses, giving us a clear image to see. Selecting a spherical lens allows us to view much crisper, more detailed images.
Spherical lenses play a key role in optics and photography. These enable us to visualize things which are anyhow smallest to visualize with naked eyes or which are too much far away from us, using naked eyes. One example is spherical lenses which are an important component in cameras. These aid in concentrating the light onto the camera’s sensor that records the image we wish to photograph. Spherical lenses allow us to observe the distant stars and planets in the firmament through telescopes. Likewise, in microscopes, these lenses magnify small objects to appear much bigger, enabling us to see details that we cannot see with the naked eye.
Types of lens Convex lens Convex lenses are thick in center and thin at the edges; They are amazing for enlarging everything and used in devices such as magnifying glasses, telescopes, and camera lenses. Using a convex lens, its put in place in order to help you to see things sort of far away more with detail.
Spherical aberration is an optical defect that can be found in lenses as well as spherical lenses. This happens when the light rays passing through a spherical lens converge at different points after they emerge from the lens. This will cause images to appear blurry or distorted. We can apply one or more further lenses along with it to correct the light rays path by combining it together. Another solution to this is to use aspherical lenses. Positive lens surfaces that are not spherically shaped. Because of this spherical aberration, images become less clear, even if the lenses used have a high optical quality, however, an aspherical lens is able to correct this spherical aberration and produce clearer and sharper images.
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