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Basic Concept of Lens
Release Time:
Sep 02,2024
Lenses are made according to the laws of refraction of light.
Lenses are made according to the laws of refraction of light. A lens is an optical element made of a transparent substance (such as glass, crystal, etc.). A lens is a refracting mirror whose refracting surfaces are two spheres (part of a sphere), or one sphere (part of a sphere) and a flat transparent body. The image it creates is both real and imaginary. Lenses can generally be divided into two main categories: convex and concave.
The central part is thicker than the edge part is called convex lens, there are three kinds of biconvex, plano-convex and concave; the central part is thinner than the edge part is called concave lens, there are three kinds of biconcave, plano-concave and convex-concave. LED lenses are generally silicone lenses, because of the high temperature resistance of silicone (can also be over reflow soldering), so commonly used directly encapsulated in the LED chip. General silicone lens size is small, diameter 3-10mm. And LED lens is generally closely linked with the LED, it helps to improve the efficiency of the LED light, the lens to change the LED light field distribution of the optical system.
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