High-Performance Infrared Lenses for Thermal Imaging - China Suppliers & Factory for Ge, ZnSe, CaF₂ Lenses

Core Materials & Technology

• Germanium (Ge) Lenses: Wavelength 1.8–23μm, blocks visible light, Knoop hardness 780 for rugged applications (max. temp. <100°C).
• Zinc Selenide (ZnSe) Lenses: Low absorption at 10.6μm (CO₂ lasers), range 0.6–21μm, avg. transmission 70% (up to >99% with AR coating), temp. limit <250°C.
• Fluoride Lenses (CaF₂/BaF₂/MgF₂):
  - BaF₂: Broadband transmission, stable up to 800°C (dry environments);
  - MgF₂: Range 0.12–7μm, chemical/laser damage resistance, lowest refractive index (1.413) among IR materials.

Design Advantages

• Aberration Control: Aspheric and achromatic doublet designs minimize spherical/chromatic aberrations for sharper thermal imaging.
• Coatings: Multi-layer AR coatings enhance transmission (MWIR: 3–5μm, LWIR: 8–14μm) and durability.

Applications & Services

• Thermal Imaging: Night vision, firefighting, industrial temperature monitoring.
• High-Power Lasers: Beam focusing for CO₂ laser cutting/welding.
• Spectroscopy: Trace gas detection (mid-IR) and environmental analysis.

Customization Services: Tailored IR lenses, windows, filters, and optical assemblies with end-to-end support from prototyping to mass production. Advanced metrology labs ensure surface accuracy λ/4 and tolerance ±0.02mm.