Explore Smart Glasses

A study published in 2026 proposes a polarization-selective zonal outcoupling scheme that illuminates different exit-pupil regions by switching between circular polarization states. In a monochromatic prototype, this approach improved eye-box uniformity from approximately 36% to about 70%; however, for full-color wearable systems, engineering challenges—such as closed-loop eye tracking, crosstalk, chromatic dispersion, and assembly tolerances—still need to be addressed.

IntroductionExporting AR devices is not only about shipping hardware. Buyers evaluate certifications, software compatibility, localization, support models, and product lifecycle planning.

Eye relief, interpupillary distance (IPD), and the distance from the in-coupling grating to the eyebox are the three core distance parameters in an AR headset’s optical system. These are intrinsically linked to the industrial design (ID), requiring product definition to strike an optimal balance between optical performance and aesthetic appeal.

AI glasses are diverging into two distinct paths: those without displays and those with displays. The former focuses on miniaturized integration and cost, while the latter demands expertise in precision optics and high production yields. Scaling either approach relies on stable and repeatable manufacturing capabilities.

FOV (Field of View) determines the size of the virtual image in AR glasses, while the "eyebox" defines the effective viewing area within which the entire image remains visible. Both are determined by the interaction between the optical engine and the waveguide—specifically the design of the waveguide's gratings—and they directly impact the user experience.

The bottleneck in achieving 99.99% reflectivity for high-reflectivity laser mirrors lies not in the thin-film design, but rather in process-related details such as absorption, scattering, and defects. Furthermore, this value cannot be measured directly; it must be calculated by separately determining transmission, absorption, and scattering.