Optical lenses are used in many Optical instrument in the scientific research field, and optical lenses are made according to the refraction law of light. A lens is an optical element made of transparent material. A lens is a refracting mirror with two spherical surfaces (part of a sphere) or one spherical surface (part of a sphere) and one planar transparent body. The image it forms has both real and virtual images. Lenses can generally be divided into two categories: convex lenses and concave lenses. The central part is thicker than the edge part and is called a convex lens, which has three types: biconvex, flat convex, and concave convex; The central part that is thinner than the edge part is called a concave lens, and there are three types: double concave, flat concave, and convex concave.
Currently, LED lenses are generally acrylic lenses, which are widely used due to their high transmittance, easy control in design and molding, and high production efficiency. Generally, LED lenses undergo secondary processing of light, which helps to improve the light output efficiency of LEDs and changes the light field distribution of LEDs. LED lenses are closely related to LEDs and help to improve the light output efficiency and change the light field distribution of LEDs. High power LED lenses/reflective cups are mainly used for concentrating and guiding light in high-power LED cold light source series products. High power LED lenses are designed with light distribution curves based on different angles of LED output light. By increasing optical reflection, light loss is reduced, and light efficiency is improved (instead of setting an aspherical optical lens).
The design of the optical lens uses a penetrating spotlight in front of it, while the conical surface can collect and reflect all the side light, and the overlap of these two types of light can achieve the most perfect light utilization and beautiful spot effect. At the same time, some changes can also be made to the surface of the conical lens, which can be designed as mirror surface, frosted surface, bead surface, stripe surface, threaded surface, convex or concave surface, etc. to achieve different spot effects.