This is the type of lens that has a curve in such a way that it is thin on the edges, but when it comes to the center, the lens is rather thick. In other words, if the surface of a lens is seen to be curved outside, then it is identified as a biconvex lens. The main purpose of the convex lens is to converge the ray of light coming in from an external source, and as a result, the ray of light is focused on the other side of the lens, which helps to form an image.
The point where the light converges is stated as the focus, and the focal point is known as the distance that is covered from the center of the lens to the focus. Since a convex lens is known to be the ray of light towards one particular focal point, this lens is also known as a converging lens.
Type of images
Basically, a convex lens forms up two types of images, either real or virtual images. Real images are the type of images that can be seen on a screen, and they can be captured there. Only convex lenses are able to produce real images, so the lenses that are part of our tv screens or cinema screens that show us the captured image are basically using convex lenses.
On the other hand, convex lenses are also known for making virtual images as well. These are the type of images that we usually see through the lens. They have a shorter distance from the focal point. For example, the images we see while wearing spectacles are virtual images. When convex lenses are added to spectacles, we view the image formed on the lens, and we look at the image from there.
Plano Convex lens is the best option to collect and collimate light – focus parallel rays of light to a single point. When the object and the image are located at a different distance from the lens the asymmetry of the Plano Convex lens reduces the spherical aberration. This lens is best used when the object is placed at infinity and the image is a focused point. It is recommended to place the curved surface facing the largest object distance to reduce spherical aberration.
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Plano Convex lens
| Converging or positive lens Curvature on one side of the lens Thicker at its center than at its edges.The focal length is defined as positive One focal point Forming a real or a virtual image. |
