Mirror Coating Solution

PVD (Physical Vapor Deposition) Technology in Large Area Mirror Manufacturing

PVD technology plays a key role in the production of large-area mirrors (such as aluminum mirrors, silver mirrors, and decorative colored mirrors), achieving high reflectivity, weather resistance, and diverse visual effects through high-precision coating.

1. Aluminum Mirror (Aluminum Mirror)

Application Scenarios:

• Building Curtain Walls: Cost-effective, lightweight, used in large buildings such as malls and airports.

• Solar Concentrator Mirrors: High reflectivity required (>90%), UV aging resistance.

• Automotive Rearview Mirrors: Anti-glare treatment required (region-specific coating).

PVD Process Key Points:

• High Purity Aluminum Target (99.999%): Reduces reflection loss caused by impurities.

• Magnetic Sputtering: Aluminum film (100-150nm) deposited on glass substrates, achieving a reflectivity of up to 92% (in the visible light range).

2. Silver Mirror (Silver Mirror)

Application Scenarios:

• High-End Decorative Mirrors: Bathroom mirrors, makeup mirrors, etc., requiring ultra-high reflectivity (>95%) and neutral color.

PVD Process Key Points:

• Silver Layer: Low-temperature (<100°C) sputtering or evaporation of silver (120-150nm), with reflectivity >97% (at 550nm).

3. Decorative Colored Mirror (Decorative Colored Mirror)

Application Scenarios:

• Building Exterior Design: Colored mirrors in gold, blue, rose gold, used in hotels and art installations.

• Home Appliance Panels: Decorative colored glass used in refrigerators, ovens, etc.

PVD Process Key Points:

• Color Achievement Principles:

  • Interference Color: Depositing multi-layer dielectric films (such as TiO₂/SiO₂) to generate colors through light interference (e.g., blue, green).

  • Alloy Coloring: Sputtering alloy targets (e.g., TiN for gold, ZrN for rose gold, stainless steel for black/grey).