Surface relief waveguides and diffractive optical elements are shaping the future of photonic technologies. From next-generation augmented and virtual reality (AR/VR) displays to revolutionary meta-optics, these nanostructured components are unlocking unprecedented possibilities in light manipulation, optical performance, and system integration.
As industries race to bring these technologies to market, the challenge has evolved beyond achieving nanometer-scale precision. Today’s manufacturers need to produce complex nanostructures reliably, repeatedly, and cost-effectively at an industrial scale. While no single process has emerged as the universal standard for transparent waveguide manufacturing, Rolling Nanoimprint Lithography (RNIL) is rapidly gaining traction as a commercially viable production method for researchers and manufacturers navigating the complexities of volume output.
Image credit: Stensborg A/S
What makes Rolling Nanoimprint Lithography (RNIL) commercially viable for diffractive optical element production?
AR displays often rely on transparent waveguides with precisely engineered surface relief gratings. These components must couple, expand, and outcouple light into the user’s eye while maintaining crystal-clear transparency. To function effectively, waveguides demand:
Stensborg’s roller-based nanoimprinting technology offers a commercially viable pathway for advanced optics manufacturers aiming to scale production, expand material flexibility, and lower unit costs.
Beyond waveguides, RNIL excels at producing diffractive optics, metamaterials, and nanostructured scaffolds, making it an adaptable and transferable method for diverse applications within R&D and nanophotonics industries.
Stensborg’s IP-backed nanoimprint systems: engineering for high-volume production
At the core of Stensborg’s technology lies a patented nip-based optical engine, precision-designed for uniform UV curing during the rolling imprinting process. This innovative configuration enables consistent curing and nanoscale replication fidelity across substrates in both Roll-to-Roll (R2R) and Roll-to-Plate (R2P) systems.
Where established replication methods such as injection moulding or mask lithography face constraints of long cycle times and elevated costs, RNIL introduces a continuous, large-area process optimised for flexible foils, thin glass substrates, advanced polymers, and rigid substrates, making it more efficient in both R&D prototyping and in industrial-scale environments.
Stensborg’s RNIL HoloPrintⓇ patented process
The RNIL process centers on precision and efficiency: a patterned template, mounted on a cylinder, contacts a resin-coated substrate. As the roller advances, progressive UV curing takes place along the nip. The substrate then separates, leaving behind the precisely replicated nanostructured pattern.
Figure 1 illustrates Stensborg’s scalable roller-based nanoimprinting process from start to finish.
A key innovation in Stensborg’s solution is the intermediate template production approach. Rather than using the master directly, working templates are replicated and then employed in the rolling process. This strategy provides two critical advantages for waveguide production:
Master protection and consistency – The delicate master remains intact and protected, while defective or worn working templates can be replaced quickly without halting production lines.
Material flexibility and throughput – Slow-curing materials that would normally create bottlenecks in NIL processes can be shifted to a downstream curing stage, effectively decoupling cycle time from imprinting speed.
What makes RNIL especially relevant for AR waveguides and diffractive optics is its ability to achieve nano-patterning replication at large volumes while maintaining uniform optical quality throughout the production run.
Can Stensborg’s RNIL be scaled for industrial AR optics production?
Yes — Stensborg’s rolling nanoimprint technology has been engineered from the ground up with scalability and production economics at its core:
Many clients already utilise Stensborg’s compact Roll-to-Plate unit, the Desktop Roll NanoImprinter 3.0, as their go-to prototyping tool for waveguide development and AR component validation, providing a clear pathway from laboratory concepts to industrial production.
Ready to Scale Your Optical Innovation?
In the rapidly evolving field of waveguide and diffractive optical element manufacturing, no single “best” production technology will dominate – multiple methods will likely coexist as markets mature and applications diversify.
What Rolling Nanoimprint Lithography offers is a commercially viable, volume-ready pathway: a flexible processing strategy that seamlessly combines nanometer-scale precision with high-throughput production capabilities.
Whether you’re developing next-generation AR displays, advanced photonic devices, or exploring new applications in meta-optics, RNIL provides the scalability, reliability, and cost-effectiveness needed to bring innovative optical technologies from laboratory to market.
Empower your volume production with high-efficiency manufacturing solutions:
