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Optical Materials
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Fused Silica
Refractive Index: ~1.46, Transmission Range: 160 nm to 2.5 µm, Usage: Precision lenses, UV and IR optics
Crown Glass
Refractive Index: ~1.52, Transmission Range: 350 nm to 2.8 µm, Usage: Corrective lenses, binoculars, camera lenses
Polymethyl methacrylate (PMMA)
Refractive Index: ~1.49, Transmission Range: 300 nm to 2.5 µm, Usage: Contact lenses, light guides, acrylic glass
Silicon
Refractive Index: ~3.4, Transmission Range: 1.2 µm to 15 µm, Usage: IR lenses, solar cells, sensors
Flint Glass
Refractive Index: > 1.57, Transmission Range: Varies with composition, Usage: Prisms, high-quality lenses, optical components
Sapphire
Refractive Index: ~1.76, Transmission Range: 150 nm to 5 µm, Usage: Watch crystals, high-durability windows, laser components
Yttrium Aluminum Garnet (YAG)
Refractive Index: ~1.83, Transmission Range: 200 nm to 5 µm, Usage: Solid-state laser materials, jewelry, LED substrates
Magnesium Fluoride
Refractive Index: ~1.38, Transmission Range: 120 nm to 7 µm, Usage: Anti-reflective coatings, UV optics, astronomical optics
Polycarbonate
Refractive Index: ~1.58, Transmission Range: 390 nm to 2,000 nm, Usage: Eyewear lenses, bulletproof windows, compact discs
Germanium
Refractive Index: ~4.0, Transmission Range: 2 µm to 20 µm, Usage: IR imaging systems, thermal cameras, spectroscopy
Zinc Selenide
Refractive Index: ~2.4, Transmission Range: 600 nm to 21 µm, Usage: CO2 laser optics, FLIR systems, medical imaging
BK7 Glass
Refractive Index: ~1.52, Transmission Range: 330 nm to 2.1 µm, Usage: Standard optical glass for lenses and prisms
Calcium Fluoride
Refractive Index: ~1.43, Transmission Range: 130 nm to 10 µm, Usage: High-performance lenses, UV spectroscopy, lithography
Borosilicate Glass
Refractive Index: ~1.51, Transmission Range: 330 nm to 2.5 µm, Usage: Laboratory glassware, telescopes, lighting
Gallium Arsenide
Refractive Index: ~3.5, Transmission Range: 1 µm to 17 µm, Usage: Infrared lenses and windows, semiconductors, solar cells
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