Cylindrical lens is a very important optical element, it can focus or diverging light in one or more directions, used to adjust the light path and correct visual problems. Different types of cylindrical lenses are widely used in different optical instruments and are an indispensable part of modern optical technology.

Cylindrical lens is a special type of lens that is shaped like a cylinder and can focus or diverge light in one direction. Based on their shape and function, cylindrical lenses can be divided into the following categories.

1. positive cylindrical lens

Positive cylindrical lens is a lens that focuses light in one direction. Its shape is similar to a cylinder, in which one side is flat and the other is curved.

2. negative cylindrical lens

Negative cylindrical lens is a lens that diverts light in one direction. Its shape is also similar to a cylinder, in which one side is flat and the other is curved.

3. double cylindrical lens

Double cylindrical lens is a lens that focuses or diverges light in two directions. Its shape is similar to that of an elliptical cylinder, where both faces are curved. Double cylindrical lenses are commonly used in optical instruments, such as microscopes and telescopes, to adjust the light path and focus.

4. Cylindrical lenses set

Cylindrical lens group is an optical system composed of multiple cylindrical lenses. It can focus or diverge light in multiple directions, which is used to adjust the light path and focus. 

Application: optical instruments, projector, microscope, telescopes, camera, laser, etc