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High Transmittance Barium Fluoride Glass & Customized IR Sapphire Protective Windows

Advanced Optical Materials for Infrared and UV-IR Applications
We supply high-transmittance Barium Fluoride (BaF₂) glass and custom IR-grade sapphire protective windows for demanding optical and infrared systems. Engineered with excellent transmittance, low refractive index, and superior environmental durability, these materials are ideal for sensors, IR imaging, laser optics, and high-energy applications. Circular lenses and protective windows are available in fully custom sizes, coatings, and edge finishes.

① Barium Fluoride (BaF₂) Optical Windows

• Transmission Range: 0.15–12.5 μm (UV to mid-IR)

• Refractive Index: ~1.46 @ 0.6 μm – very low, minimizing Fresnel losses

• Key Properties: High optical transmission, fast response to UV/IR light, low dispersion

• Applications:

  • UV & IR spectroscopic instruments

  • X-ray and gamma-ray detection systems

  • Laser optics requiring low thermal lensing

• Custom Options: Diameter from 5 mm to 150 mm, thickness 0.5–10 mm; coatings like AR or DLC optional

② Infrared Sapphire Protective Windows

• Transmission Range: 0.2–5.5 μm (IR-visible)

• Material Strength: Extremely hard (Mohs ~9), chemically inert, high thermal resistance

• Surface Finish: Optical polish (60/40 to 10/5 scratch-dig), λ/10 flatness optional

• Applications:

  • IR camera lenses and protective domes

  • Aerospace and military-grade sensor windows

  • Harsh-environment optical enclosures

• Customization: Circular or rectangular shapes, edge beveling, AR coating or sapphire dome structures available

③ Custom Circular Protective Glass Lenses

We offer fully customized round optical lenses using BaF₂, sapphire, quartz, or borosilicate materials depending on your spectral and mechanical needs.

• Edge Options: Flat-ground, beveled, step-cut for mounts

• Coating Options: Anti-reflective (AR), IR-pass, hydrophobic, scratch-resistant

• Use Cases:

  • Laser protection windows

  • Sensor lens covers

  • Infrared light transmission barriers

  • Optical sealing in high-pressure environments

TIHOT supports both prototyping and volume production of high-performance optical windows and lenses. Whether you're developing next-generation IR sensors, optical filters, or r ed protective housings, we provide fast-turnaround, precision-ground, and coating-ready components tailored to your system. Contact us for specifications, pricing, or to request custom drawing support.