The Difference of Four Kinds of LED Luminaire Optical Lens Material

1. Silicone Lens

1. Because silicone lens has high temperature resistance (it can also be reflow soldered), it is commonly used to directly encapsulate LED light-emitting devices and other special applications.
2. Generally, silicone lens has a small volume with a diameter of 3-10mm.
3. Silicone lens cost is very high.

2. Optical Grade PMMA Lens

1. PMMA (polymethyl methacrylate, commonly known as: acrylic).
2. High production efficiency (can be completed by injection molding, extrusion); High transmittance (about 93% when the thickness is 3mm);
3. Disadvantages: temperature cannot exceed 80° (thermal deformation temperature 92°).

3. Optical Grade PC Lens

1. High production efficiency (can be completed by injection molding, extrusion);The light transmittance is slightly lower (about 89% when the thickness is 3mm);
2. Temperature cannot exceed 110° (thermal deformation temperature 135°).

4. Optical Glass Lens

1. Advantages: rich optical parameter characteristics (optional), with high light transmittance (penetration rate at 3mm thickness of 97%), high temperature resistance characteristics;
2. Large size;
3. Heavy weight, single shape, fragile;
4. Batch production is not easy to achieve, low production efficiency, high cost. Besides brittle faults;