)( is a concave lens
() is a convex lens
It is a concave lens.
its a concave lens(:
The shape of a concave lens is such that the middle part is thinner than the edge. If one side of the lens is flat, then the other side will be shaped inward like a cave, kind of like this: [( You can also have a concave lens where both sides are shaped inward, like this: )( You can even have a concave lens where one side is shaped outward, and the other side is shaped inward, as long as the inward-shaped side is more dramatic than the outward-shaped side.
The objective lens
You are thinking of a lens. If it is to form an image you need a convex lens, also called a converging lens.
convex lens
convex
A convex lens curves outward, forming an elliptical shape.
convex
A magnifying glass is convex, meaning that the lens curves outward.
convex. Which is easy to remember as the other is a depression like the entrance to a cave...so it is called "concave"
i think it's called fish-eye lens
The outward curving of the lens is said to be a convex lens.
Convex is an adjective that describes something has a surface or boundary that curves or bulges outward. Convex lens are thicker at the center, they do cause light to converge.
A "concave" mirror curves inward. A "convex" mirror curves outward.
covex lens
outward
Such a mirror is concave.