What is Lens
A lens is an optical device made of transparent materials such as glass, plastic, or silicon. It is used to control and manipulate the direction, distribution, and focus of light emitted from a light source. Lenses are designed to provide precise control over the angle at which light is distributed.
Lenses can come in various shapes and sizes, and they can be symmetrical or asymmetrical. Symmetrical lenses distribute light at the same angle in both the vertical and horizontal axes, while asymmetrical lenses have different angles for vertical and horizontal distribution. Asymmetrical lenses are commonly used in indoor and outdoor lighting applications where light needs to be directed in a specific direction.