Are myopia lenses concave or convex lenses? Let's do it. Glasses are known to correct the vision of myopic patients, allowing them to better appreciate the scenery around them. But do you know what kind of lens is used in this amazing lens?
Convex lenses and concave lenses seem to be similar, but they are actually very different. Convex lenses, as the name suggests, are thicker and have thinner edges, which have the effect of concentrating light. Not only can it see far away, but it also converges light, which is closely related to the thickness of the lens. Concave lenses, on the other hand, are thin in the middle and thick at the edges, presenting a unique shape. It is characterized by diverging light rays, which helps light to refract better.
Next, we want to ** the relationship between these two lenses and myopia glasses. When we have an in-depth understanding of the imaging rules of convex lenses, we will find that whether it is a real image or a virtual image, without exception, it is inverted. Concave lenses, on the other hand, can also form real and virtual images, but their imaging rules are completely different from those of convex lenses.
Therefore, we can conclude that myopia lenses are concave lenses. This is because the lens of a myopic eye is more convex and its focal length is shorter than that of a normal eye. In order to image distant objects on the retina, we need to use the divergence of the concave lens to retract the image and reappear on the retina. In contrast, the long-sighted mirror uses a convex lens.