Anti-glare Glass (AG Glass) : Detailed Explanation of Principles, Types and Applications
Anti-Glare Glass (AG glass for short) is a type of functional glass that reduces light reflection and enhances visual clarity through special surface treatment. It is widely used in electronic displays, building curtain walls, instruments and meters, and other fields.
1.The working principle of anti-glare glass
The core of anti-glare glass lies in surface microstructure treatment, which reduces glare through the following methods:
The principle of diffuse reflection: The surface of the glass is etched or coated to form a micron-level concave-convex structure, which scatteres direct light into soft light and reduces specular reflection.
Reduce surface gloss: Make the reflected light blurred to avoid dazzling strong light.
2. Main types of anti-glare glass
Chemical etching of AG glass
Process: Corrode the glass surface with hydrofluoric acid (HF) to form a uniform slightly rough structure.
Advantages: Strong durability and long-lasting anti-glare effect.
Disadvantages: Slightly low light transmittance and relatively high cost.
(2) Spray AG glass
Process: Anti-glare nano-coating (such as silica particles) is sprayed on the surface.
Advantages: Customizable haze and high light transmittance.
Disadvantages: Poor wear resistance, and it may wear out after long-term use.
(3) Physical grinding of AG glass
Process: Grind the glass surface with a carborundum wheel or sandblasting machinery.
Advantages: Low cost, suitable for large-scale application (such as architectural glass).
Disadvantage: Poor surface uniformity, which may affect clarity.
3. Core performance indicators
Haze: It measures the degree of light scattering (usually 5% to 30%, the higher the haze, the stronger the anti-glare effect, but the lower the light transmittance).
Surface roughness (Ra) : Generally controlled within 0.1 to 1.5μm, it affects the hand feel and the difficulty of cleaning.
Wear resistance: Chemically etched AG > Spray AG >" Physical grinding of AG.
4. Typical application scenarios
Electronic display devices
Smartphone and tablet screens (reducing outdoor reflection).
In-vehicle central control screen, aviation instrument panel (avoid interference from sunlight).
ATM machines and self-service terminals (enhancing visibility).
(2) Architecture and Interior Design
Museum display cases (reducing light reflection to interfere with viewing).
Office partitions and curtain walls (to reduce sunlight glare).
Glass in hospital operating rooms (to avoid reflection from shadowless lamps).
(3) Industry and Instrumentation
Industrial touch screens (oil-proof, fingerprint-proof).
Observation window for precision instruments (such as microscopes and optical equipment).
5. Advantages and disadvantages of anti-glare glass
Advantages
Significantly reduce glare and enhance visual comfort.
Reduce fingerprint residue (the frosted surface is not prone to oil stains).
Some models also have anti-reflective (AR) functionality.
Disadvantage
The light transmittance is slightly lower than that of ordinary glass (with a loss of about 5% to 10%).
The surface microstructure may accumulate dust. When cleaning, use a soft cloth (avoid hard scraping).
6. Purchase and Usage suggestions
(1) Select the type according to the demand
High light transmittance requirement: Select spray AG or low haze etching AG.
High wear resistance requirement: Select chemically etched AG.
Low-cost solution: Physical grinding of AG (suitable for architectural glass).
(2) Installation and Maintenance
Avoid scratching the surface microstructure with hard objects.
When cleaning, use a neutral detergent and a microfiber cloth.
When using AG glass for construction, attention should be paid to the orientation (optimize the anti-glare Angle).
