🟦 Optical Windows

Durable, High-Precision Optical Windows for UV, VIS, NIR, and IR Applications

Optical windows are transparent, flat optical components designed to protect sensors, lenses, or detectors without altering the path of light. At Yighen Ultra Precision, we specialize in custom optical window manufacturing—from prototype to high-volume production—serving industries such as life sciences, aerospace, defense, semiconductor, and laser optics.

🔹 Types of Optical Windows We Offer

• BK7 Windows

• Fused Silica Windows (UV Grade, IR Grade)

• Sapphire Windows

• Zinc Selenide (ZnSe) and Zinc Sulfide (ZnS) Windows

• Calcium Fluoride (CaF₂) and Magnesium Fluoride (MgF₂) Windows

• Germanium and Silicon Windows (IR)

• AR-Coated Windows

• Wedge Windows

• Protective Windows for Harsh Environments

All optical windows are available in custom sizes, thicknesses, coatings, and surface finishes, tailored to meet the most demanding optical system specifications.

🔹 Key Specifications

Note: All windows are manufactured under strict quality control using interferometric and spectrophotometric validation.

🔹 Applications of Optical Windows

🔹 Materials We Commonly Use

• BK7 – Cost-effective, high optical clarity, ideal for VIS range

• Fused Silica – Exceptional UV and thermal stability

• Sapphire – Extremely hard, scratch-resistant, high LDT

• CaF₂ & MgF₂ – Excellent UV to IR transmission

• ZnSe / Ge / Si – Infrared and thermal imaging systems

• Gorilla Glass / Custom Optical Plastics – Lightweight, impact-resistant options

🔹 Why Choose Yighen for Optical Windows?

✅ Precision flatness and parallelism
✅ AR/DLC/ITO coatings in-house
✅ UV to IR coverage with high transmittance
✅ Extreme temperature and abrasion resistance available
✅ Flexible custom prototyping and mass production

We combine ultra-precision grinding & polishing with advanced coating systems, ensuring our optical windows meet or exceed MIL, ISO, and custom requirements.

🧠 FAQs

Q: What’s the difference between standard and precision windows?
A: Precision windows offer tighter tolerances in flatness, parallelism, and surface quality—critical for imaging and laser systems where even slight deviations affect performance.

Q: Can you coat optical windows in-house?
A: Yes. We offer various coatings including broadband AR, V-coat, ITO conductive coatings, IR coatings, and hydrophobic protective layers.

Q: Do you support large-diameter or elliptical windows?
A: Yes. We can custom-cut large or irregular shapes with tight dimensional and optical tolerances.

🪟 Durable, Flat, and Optically Clear — Windows Engineered for Precision

Yighen produces optical windows that offer excellent surface flatness, transmission, and environmental durability.
We support a wide range of materials — including BK7, fused silica, sapphire, CaF₂, ZnSe, PMMA, and COP — and apply AR, mirror, or custom coatings based on your spectral needs.

From protective covers to imaging system interfaces and IR-transparent panels, we manufacture windows for both prototype and volume applications.

🔵 Request an Optical Window Quote
📩 Tell us your size, material, and wavelength range — we’ll respond within 24 hours.

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Want to check our supported materials, flatness grades, and coating types?
📄 Download Our Optical Windows Specification Sheet

Need help selecting a window for your optical system or environment?
👤 Learn More About Yighen

🔗 Related Content

• 🎯 Optical Coating Services
  Custom AR, mirror, IR, and protective coatings — applied in-house.

• 🌐 Infrared Optics
  Windows and lenses in CaF₂, ZnSe, Ge, and other IR-grade materials.

• 🔬 Optical Metrology & Testing
  Flatness, wedge angle, and transmitted wavefront accuracy validated with precision tools.

• ⚙️ Opto-Mechanical Design Services
  Ensure window integration meets system-level requirements — thermally, optically, mechanically.