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Home > Products > Prisms > Equilateral Prisms

Infrared Equilateral Prism
Infrared material equilateral prisms (60° top angle) are optical elements designed for the infrared wavelength (usually referred to as 0.75μm-14μm) for applications such as thermal imaging, infrared spectroscopy, and laser transmission.
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What materials can Yutai Optics process for infrared equilateral prisms?
Material Transmission Range Refractive Index Advantage Disadvantage Typical Application
Si 1.2-7μm ~3.4 High hardness, low cost, heat resistant 8-14μm impermeable MIR laser, thermal imaging
Ge 2-16μm ~4.0 Wide infrared transmission, high refractive index High brittleness, temperature sensitive Thermal imaging, CO₂ laser (10.6μm)
ZnSe 0.5-20μm ~2.4 Wide band, low absorption, resistant to laser damage High cost, soft (easily scratched) High power laser, infrared spectroscopy
CaF2 0.15-9μm ~1.4 UV to MIR, low dispersion Brittle, not resistant to thermal shock Multispectral systems, laser windows
ZnS 0.4-12μm ~2.2 Wear-resistant, multi-spectrum compatible Higher cost

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