Customized Diameter Sapphire Observation Windows – See Through the Harshest Processes

Product Description:

Sapphire (single‑crystal Al₂O₃) offers a unique combination of optical and mechanical properties that directly solve industrial window challenges:

• Extreme temperature resistance – Usable from cryogenic (-200°C) up to 2000°C in inert or oxidizing atmospheres. No softening, no devitrification.
• High pressure tolerance – Compression strength > 2 GPa. A 5 mm thick sapphire window withstands differential pressures exceeding 10,000 psi (690 bar) when properly mounted.
• Chemical inertness – Unaffected by most acids (including HF, HNO₃, H₂SO₄), alkalis, solvents, and process gases (Cl₂, H₂S, NH₃). Only molten alkalis or hydrofluoric acid above 300°C cause attack.
• Abrasion resistance – 9 on Mohs scale. No scratching from scouring solids, catalyst fines, or manual cleaning with metal tools.
• Broadband transparency – 0.2 µm to 5.5 µm (UV to mid‑IR). Suitable for vision systems, laser diagnostics, pyrometers, and UV curing monitoring.
• Non‑porous, non‑outgassing – Vacuum compatible to 10⁻¹⁰ mbar. Zero moisture absorption, no organic binders to contaminate your process.

Features:

We don't just polish a disc— we engineer a window that integrates safely into your equipment.

Material & Orientation
C‑plane or A‑plane sapphire (lowest birefringence, highest thermal shock resistance).

Optical grade (low scatter, < 0.5 nm RMS surface roughness) or industrial grade (cost‑optimized, slight haze acceptable for non‑imaging systems).

Precision Fabrication
Cutting – Diamond wire or laser slicing with < 0.05 mm kerf loss.

Lapping & grinding – Multi‑step diamond slurry process for precise thickness and parallelism.

Polishing – Final surface finish < 1 nm Ra for visible and IR applications. Standard transmission > 85% uncoated (visible).

Edge finishing – Ground, chamfered (0.1–0.5 mm), or radiused edges to eliminate stress risers and prevent chipping during installation.

Mounting Compatibility
We provide window assemblies ready for your flange, retainer nut, or welded housing:

Conical or stepped seat designs for metal gaskets (Cu, Inconel).

Elastomer‑sealed (Viton, Kalrez) for lower pressure and temperature.

Glass‑to‑metal or glass‑to‑ceramic brazing using active metal solder (Ag‑Cu‑Ti) for ultra‑high vacuum.

Anti‑spall laminates (sapphire + polycarbonate) for high‑pressure gas or explosive decomposition processes.

Optional Coatings
Anti‑reflection (AR) – Single or broadband AR for > 97% transmission in VIS or NIR.

Available Options :

• AR coatings for specific wavelength ranges (UV, visible, NIR, SWIR, MWIR)
• Edge ground or polished
• Custom shapes (rectangular, stepped, drilled holes)
• Chamfered or beveled edges for mounting

Typical Applications:

• High-pressure sight glasses and viewports
• Laser systems and high-energy optics
• Semiconductor inspection equipment
• Medical laser windows and endoscope protection
• Analytical instruments (e.g., FTIR, UV-Vis spectroscopy)
• Harsh environment cameras (underwater, chemical reactors, high-temperature furnaces)

Why choose our sapphire windows?

Each window is carefully polished to achieve low scatter and excellent surface quality, minimizing optical loss. With strict quality control and traceable material certification, our sapphire components deliver reliable performance in mission-critical applications.

Packing and Shipping:

Product Packaging and Shipping for Sapphire Optical Window

Each Sapphire Optical Window is carefully packaged to ensure maximum protection during transit. The window is first wrapped in a soft, anti-scratch material to prevent any surface damage. It is then placed in a custom-cut foam insert that securely holds the window in place within a sturdy, impact-resistant box.

Additional cushioning materials are added around the foam insert to absorb shocks and vibrations. The outer packaging is clearly labeled with handling instructions such as "Fragile" and "Handle with Care" to alert shipping personnel.

For international shipments, the package complies with all relevant regulations and includes necessary documentation to facilitate smooth customs clearance.

We use reliable courier services to ensure timely and safe delivery of the Sapphire Optical Window to your specified destination. Tracking information will be provided once the product has been dispatched.

FAQ:

Q: Where is the Sapphire Optical Window manufactured?

A: The Sapphire Optical Window is manufactured in China.

Q: What is the minimum order quantity for the Sapphire Optical Window?

A: The minimum order quantity is 100 pieces.

Q: How is the Sapphire Optical Window packaged for shipping?

A: The product is carefully packaged in cartons to ensure safe delivery.

Q: What is the typical delivery time for an order of Sapphire Optical Windows?

A: The standard delivery time is 30 days after the order is confirmed.

Q: What payment terms are accepted for purchasing the Sapphire Optical Window?

A: Payment is accepted via Telegraphic Transfer (TT).