What materials are used for high power LED beads
Release time
2022-11-28
High power LED beads are widely used in car headlights, flashlights, lamps, fill lights and other places. Since high-power LED beads are green and energy-saving, what are the materials used for high-power LED beads? The following unified good small talk, high-power LED lamp beads are made of what materials.
1, high-power LED lamp beads silicone lens
(1) Because of the high temperature resistance of silicone (also can be reflow soldering), so commonly used to directly encapsulate in the LED bead chip.
(2) The general silicone lens is small, 3-10mm in diameter.
2, high-power LED lamp beads PMMA lens
(1) optical grade PMMA (polymethyl methacrylate, commonly known as: acrylic).
(2) plastic-type materials
Advantages: high production efficiency (can be completed by injection molding, extrusion); high light transmission rate (3mm thickness, penetration rate of 93% or so);
Disadvantages: temperature can not exceed 80 ° (heat deflection temperature of 92 degrees).
3, high-power LED lamp beads PC lens
(1) optical grade material Polycarbonate (PC for short) polycarbonate.
(2)Plastic material
Advantages: high production efficiency (can be completed by injection molding, extrusion); light transmission rate is slightly lower (3mm thickness, penetration rate of 89% or so);
Disadvantages: temperature can not exceed 110 ° (heat deflection temperature of 135 degrees).
4, high-power LED lamp beads glass lens
Optical glass material
Advantages: high transmittance (97%), high temperature resistance;
Disadvantages: single shape, fragile, mass production is not easy to achieve, low production efficiency, high cost. However, very few domestic manufacturers have begun to develop glass molding process, the use of mold casting production of glass lenses, can produce a variety of shapes, special surface lenses. Molded production, product consistency, high precision, and can improve production efficiency, effectively reducing the cost of glass lenses, coupled with the characteristics of high light transmission, glass lenses are bound to become an alternative to optical plastic high-power LED lamp beads lens. However, the current high price of such production equipment, it is difficult to popularize in the short term. In addition, glass than PMMA, PC material fragile shortcomings, but also need more research and exploration, to now can be achieved by improving the process, only through the coating or tempering treatment to enhance the non-fragile characteristics of glass, although after these treatments, the glass lens light transmission rate will be reduced, but still will be far greater than the ordinary optical plastic lens light transmission effect. So the prospect of glass lens will be more broad.
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