OPS｜A High-End Sputtering Solution Built for Precision Optical Components

A High-End Sputtering Platform Built for Precision Optical Components

From automotive ADAS lenses, surveillance lenses and 3D sensing narrow bandpass filters, to bio-medical fluorescence filters and the Pancake lenses and waveguides of AR/VR — modern optical components push coating precision, uniformity and multilayer capability to their limits. Under demanding operating conditions, conventionally evaporated films frequently suffer adhesion degradation, spectral drift and surface scratching, directly compromising the long-term reliability of the optical system.

The Dah Young Vacuum OPS (Optical Precision Sputter) is a high-end optical coating system built on Dah Young's proprietary ARMS high-precision sputtering platform. The OPS integrates a separated activated reactive sputtering architecture, dual ICP inductively coupled plasma sources, multilayer stacking capability, and Dah Young's proprietary ultra-hard coating technology — delivering industry-leading sputtering solutions for automotive optics, precision filters and immersive display applications.

Separated Activated Reactive Sputtering｜Film Density Evaporation Cannot Reach

Compared with conventional evaporation, sputtering's principal advantage is that high-energy particles bombard the substrate with far greater energy, packing film atoms tightly into a dense structure with markedly improved adhesion. The OPS employs Dah Young's proprietary separated Activated Reactive Magnetron Sputtering architecture, effectively isolating the metal sputtering zone from the reactive plasma zone and addressing conventional reactive sputtering's target poisoning problem at the root.

This separated architecture preserves sputtering's high deposition rate and long-run stability while enabling precise thickness control through rapid alternating stacking of metal and oxide layers. Films deposited by the OPS pass rigorous automotive-grade reliability testing (damp heat, thermal shock, salt spray, mechanical vibration), suiting high-durability optical applications exposed long-term to outdoor and industrial environments.

Multilayer Capability｜Precision Stacking of 100+ Layers Without Compromise

High-end film systems such as narrow bandpass, edge and dual-band filters routinely require precise stacking of 100+ pairs of high / low refractive index layers. Thickness errors in any single layer are amplified through the stack, directly affecting the final component's center wavelength, full-width-at-half-maximum (FWHM) and pass-band flatness.

The OPS combines the high-deposition-rate advantage of separated activated reactive sputtering with a high-speed rotating chamber design, achieving rapid alternating stacking of metal and oxide layers and completing 100+ layer multilayer structures. Single-layer thickness precision reaches ± 0.5 nm and center wavelength deviation is controlled within ± 0.5%, meeting the highest grade required by 3D sensing, bio-medical spectroscopy and AR/VR optical path design.

Dual ICP Inductively Coupled Plasma｜High Dissociation, Low Particle, Long-Term Stability

The OPS comes standard-equipped with two Dah Young in-house ICP (Inductively Coupled Plasma) sources, delivering industry-leading gas dissociation and reaction efficiency. The high-density activated reactive gas generated by the ICP reacts efficiently with metal ions to form dense oxide / nitride films, ensuring refractive index accuracy and long-term spectral stability. The dual-source configuration secures reaction uniformity across large and 3D-curved substrates, improving film consistency throughout the multilayer stack.

The low-particle process design, combined with precision chamber flow control and optimized gas distribution, substantially reduces particle contamination on component surfaces. For applications such as 3D sensing modules — where a single filter affects entire sensor yield — the OPS delivers industry-leading cleanliness and yield performance.

Dah Young Proprietary Ultra-Hard Coating｜Mohs Hardness 7 on Glass Optics

The outermost coating of an optical component faces friction, dust and scratching directly — automotive lenses struck by road debris, surveillance lenses exposed outdoors long-term, industrial inspection lenses in frequent contact with coolant and particulates. Conventional optical films often cannot meet the long-term durability such applications demand.

The OPS integrates Dah Young's latest proprietary ultra-hard coating technology, process-optimized for glass optical substrates, depositing films reaching Mohs hardness 7 (equivalent to natural quartz crystal grade) and passing rigorous 10,000-cycle steel wool abrasion testing. This breakthrough hardness specification places OPS-coated components at the industry forefront in scratch and abrasion resistance, providing powerful differentiation for automotive, security and industrial applications where long-term reliability is paramount.

3D-Curved & Complex Geometry Coating｜Matched to the Geometry of Optical Components

Optical components are commonly spherical, aspherical or freeform, and often carry micro-structures — the folded light paths of Pancake lenses, the concentric micro-structures of Fresnel lenses, the grating micro-structures of waveguides. Each pushes step coverage to its limits, and the directional deposition characteristic of conventional evaporation struggles to coat such surfaces uniformly.

The OPS combines the high particle energy and excellent step coverage inherent to sputtering with Dah Young's single-axis revolution fixture design, depositing uniform, stable and repeatable optical films on flat, spherical, aspherical and 3D convex substrates. Thickness uniformity is held within ± 0.5% on flat substrates and within ± 1% even on 3D-curved geometries, securing imaging quality and production yield.

Flexible Target Configuration｜Covering Industry-Wide Film System Needs

The OPS employs Dah Young's proprietary multi-target design, with flexible chamber configuration of single or dual targets and pre-mixing of process gases to enhance dissociation activation rate — further breaking through the traditional limits of reactive sputtering. Customers can flexibly adjust target configuration and gas formulations per film system design, achieving an optimal three-way balance among high deposition rate, high film quality and high stability.