EWS | A High-Precision Sputtering Solution Built for Sports & Vision Eyewear

A High-Precision Sputtering Platform Built for Sports & Vision Eyewear

Sports eyewear (ski goggles, cycling glasses, sunglasses) and prescription vision lenses are among the fastest-growing optical product categories in today's consumer market. These lenses widely use resin substrates including PC, CR-39, and Trivex to achieve light weight and safety — but they also pose unique coating challenges: temperature-sensitive substrates, complex 3D curved geometries, harsh end-use environments (heat, UV, sweat, oil contamination), and ever-rising consumer expectations for visual quality and durability.

The Dah Young Vacuum EWS (Eyewear Sputter) is built on Dah Young's proprietary ARMS high-precision sputtering platform, optimized specifically for the sports eyewear and vision care industry. The EWS integrates a separated activated reactive sputtering architecture, low-temperature sputtering capability, planetary rotation fixtures for curved surfaces, and a standard-equipped Anti-Fingerprint (AF) module — enabling all-in-one integrated processing of color coating + anti-reflection + anti-fingerprint. It delivers a stable, reliable, production-grade coating solution for sports eyewear brands and vision care lens manufacturers.

Separated Activated Reactive Sputtering | High-Density Films Even on Plastic Substrates

Target Poisoning has long been a technical challenge plaguing the industry — when metal target surfaces are oxidized by reactive gases, deposition rates drop sharply, glow discharge becomes uneven, and film quality deteriorates. The EWS employs Dah Young's proprietary Activated Reactive Magnetron Sputtering architecture, which effectively isolates the metal sputtering zone from the reactive plasma zone — solving the target poisoning problem at its root.

Through a high-speed rotating chamber design, substrates rapidly cycle between the metal zone and reaction zone, achieving rapid alternating stacking of metal and oxide layers. Even under low-temperature process conditions, the EWS deposits high-density, high-adhesion optical films on plastic / PC substrates — passing the most demanding abrasion, anti-fog, and scratch resistance tests in the eyewear industry, substantially outperforming the durability of conventional evaporated lenses.

Low-Temperature Process + ICP Plasma Source | Perfectly Protecting Temperature-Sensitive Lens Substrates

The glass transition temperature (Tg) of vision care resin substrates such as CR-39 and Trivex falls in the 80–100°C range — any high-temperature process can deform the substrate or degrade optical properties. The EWS keeps chamber process temperature below 80°C, paired with Dah Young's in-house ICP (Inductively Coupled Plasma) source, achieving excellent gas dissociation and reaction efficiency under low-temperature conditions and ensuring consistent film density and optical properties.

The combination of low temperature and ICP allows the EWS to deposit optical films of quality comparable to high-temperature processes — without damaging the lens substrate. For high-end vision care and sports eyewear applications requiring preservation of refractive index, birefringence, and surface flatness, the EWS delivers an industry-leading solution.

Planetary Curved Fixture + AF Module | All-in-One Process for 3D Lenses

Sports eyewear and prescription lenses are typically 3D curved structures (spherical, aspheric, progressive multifocal). Conventional flat fixtures cannot ensure coating uniformity on curved surfaces. The EWS employs a planetary rotation fixture design, paired with Dah Young's proprietary lens curvature optimization algorithm and customized clamping structures — ensuring uniform coating control across various curvature lenses in batch production.

The EWS comes standard-equipped with an Anti-Fingerprint (AF) module, enabling integrated processing of color coating / anti-reflection → AF anti-fingerprint within the same chamber. Substrates do not need to be transferred between different equipment, substantially shortening process cycles, reducing contamination risk, and improving product yield — making the EWS the most competitive equipment choice for sports eyewear brands and vision care lens manufacturers.