Dragontrail™
Dragontrail™ is a chemically strengthened aluminosilicate glass engineered by Asahi Glass (AGC) to provide exceptional surface hardness, optical clarity, and impact resistance. It combines high mechanical strength with scratch resistance, making it ideal for display covers, touch panels, and optical protection windows in rugged or portable devices.
With transmission from the visible to near-infrared (~350 nm – 2.5 µm), Dragontrail maintains excellent optical clarity and low haze while offering surface compression levels exceeding 800 MPa after ion-exchange treatment. Its refractive index of approximately 1.52 @ 589 nm and smooth surface finish make it well-suited for precision optical coatings such as AR, ITO, or DLC.
At Global Optics UK, we supply Dragontrail™ glass windows, cover plates, and optical components precision-machined to customer specification. Options include custom thicknesses, edge finishing, and advanced coatings for use in consumer electronics, automotive displays, aerospace instrumentation, and protective optical housings.
Explore Related Optical Materials:
Gorilla Glass
Aluminosilicate
Sapphire (Al2O3)
FAQ
FAQ
Q: What is Dragontrail™ glass?
A: Dragontrail™ is a chemically strengthened aluminosilicate glass developed by Asahi Glass Co. (AGC). It is designed for superior strength, scratch resistance, and optical clarity, making it ideal for protective optical windows, displays, and sensors. Through a special ion-exchange process, Dragontrail™ achieves surface compressive stresses of up to 900 MPa, resulting in outstanding impact and scratch resistance.
Q: How does Dragontrail™ compare to Gorilla Glass®?
A: Both materials are premium aluminosilicate glasses designed for durability and clarity. Dragontrail™ is often preferred for its slightly higher surface hardness and excellent resistance to alkali corrosion, while maintaining comparable optical transmission. The choice between the two typically depends on coating compatibility, cost, and application-specific requirements.
Q: What is the optical transmission range of Dragontrail™?
A: Dragontrail™ offers high optical transmission (~90%) from 350 nm to 2.5 µm, covering the visible and near-infrared regions. This makes it suitable for display covers, sensors, and optical protection windows where both visibility and optical accuracy are essential.
Q: How strong and scratch-resistant is Dragontrail™?
A: Dragontrail™ achieves surface compressive strength up to 800–900 MPa and a Vickers hardness of approximately 620 HV (Mohs ≈ 6.8). This combination gives it excellent scratch resistance and mechanical toughness, outperforming conventional glass by several times in impact and bending tests.
Q: Is Dragontrail™ suitable for optical coatings?
A: Yes. It is compatible with anti-reflective (AR), diamond-like carbon (DLC), and indium tin oxide (ITO) coatings, making it versatile for both optical and electronic applications. Its smooth surface finish and low porosity ensure excellent adhesion and coating durability.
Q: Can Dragontrail™ withstand temperature fluctuations?
A: Yes. It has a low thermal expansion coefficient of approximately 8.3 × 10⁻⁶ /°C, providing good dimensional stability under thermal cycling. It performs reliably across wide temperature ranges, making it suitable for outdoor, aerospace, and automotive environments.
Q: What are the typical applications of Dragontrail™?
A: Dragontrail™ is used in mobile devices, automotive displays, ruggedized electronics, sensor covers, and optical instruments. It is also increasingly adopted for industrial and medical displays, where strength, clarity, and chemical resistance are required.
Q: Where can I download the datasheet?
A: You can download the Dragontrail™ Glass Technical Datasheet here.