Silicon (Si) lenses are high-performance infrared optical components made from optical-grade monocrystalline silicon. They feature high transmittance in the 1.2–7 μm infrared band, high refractive index, excellent thermal conductivity, low density, and strong mechanical stability. Widely used in MWIR thermal imaging, IR detection, laser systems, aerospace, industrial sensing, and optical integration systems, they are ideal for compact, high-precision infrared optical designs.
