Vacuum Optical Coating (AR/AF/AG/AS)

Magnetron Sputtering Thin-Film Coatings for Anti-Reflective, Anti-Fingerprint Performance

Engineer Consultation

Process Overview

Nano-Scale Thin Film Deposition

Optical coating deposits nano-scale thin film layers onto glass in vacuum chambers to modify optical properties. JZJ Glass uses vacuum magnetron sputtering for AR (Anti-Reflective), AF (Anti-Fingerprint), AG (with chemical etching), and AS coatings.

AR coatings use 4-8 alternating TiO₂/SiO₂ layers reducing reflectance from ~4% to ≤0.5% and boosting transmittance from ~90% to ≥96%. AF coatings are fluorinated nano-coatings with water contact angle ≥110° for oil repellency and easy cleaning.

Specifications

Coating Performance Specifications

Parameter	Value
AR Reflectance	≤0.5%
AR Transmittance	≥96%
AF Water Contact Angle	≥110°
Coating Adhesion	≥5B (ASTM D3359)
Environmental Stability	-40°C to +85°C
Abrasion Resistance	5,000+ cycles

Capabilities

Key Coating Capabilities

Multi-layer AR coating (4-8 layers)

AF oleophobic nano-coating

AG+AR combination for outdoor

Double-side coating capability

Magnetron sputtering technology

Coating on custom shapes

FAQ

Optical Coating Questions

AR (Anti-Reflective) coating uses multi-layer thin-film interference to reduce surface reflection, typically from ~4% to ≤0.5% per side, increasing light transmittance. AG (Anti-Glare) is a surface texture created by chemical etching that scatters reflection into diffuse reflection, eliminating mirror glare in bright environments. AR is ideal for maximizing clarity; AG is ideal for outdoor readability. They can be combined as AG+AR for both anti-glare and high transmittance.

Our magnetron sputtered coatings are extremely durable. We perform ASTM D3359 cross-hatch adhesion tests (≥5B rating), Boiling water test (2 hours), salt spray test (48 hours), and temperature cycling (-40°C to +85°C). AF coatings maintain ≥100° water contact angle after 5,000 steel wool abrasion cycles. Coatings are permanently bonded to the glass and will not peel or degrade under normal use conditions.

Yes, we offer single-side and double-side coating options. Double-side AR coating is common for cover glass applications, providing maximum light transmission. We can also apply different coatings on each side, e.g., AR on front and AF on back, or AG on front and AR on back. Coating design is customized for each application based on optical requirements and environmental conditions.

Our coating chambers accommodate glass thicknesses from 0.2mm ultra-thin up to 12mm thick. Maximum panel size is 1200×1500mm. We also support coating on curved and bent glass within the chamber dimensions. For volumes, we can coat thousands of parts per day with consistent uniformity across the entire coating run, with thickness variation <±5%.

Yes, optical coatings can be applied to tempered glass, laminated glass, and chemically strengthened glass. However, the coating process temperature must be considered. Standard tempering occurs at ~620°C, while our coating process is at lower temperatures that will not affect tempered glass stress. For chemically strengthened glass, we use low-temperature coating processes to preserve the ion-exchange layer. We always recommend coating before tempering when possible for best results.

Engineer Consultation

Specify your optical performance requirements and we'll design the optimal coating stack for your application.

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