Leion Hey2's Optical Breakthrough Redefines Industry Standards

On the journey toward making AR glasses a consumer-grade product, how can we strip away the industrial feel of tech devices and transform them into lightweight, natural everyday accessories like ordinary glasses?

The answer lies in the precision optics of diffractive waveguide technology. With its ultra-thin profile and high external light transmittance, diffractive waveguides are widely regarded as the must-have optical solution for consumer AR glasses. Many flagship products from leading AR brands have adopted this display technology.

However, behind the technological glamour lies an extremely high manufacturing barrier: Diffraction gratings transmit images through nanostructures that bend light, requiring precise phase calculations, complex optical simulations, and semiconductor-level fabrication—all demanding immense computing power. Failure to meet these standards results in blurry imaging.

Additionally, due to the grating’s varying diffraction angles for different light wavelengths, users often experience rainbow effects. Neglecting to refine this technology could severely undermine market trust and customer loyalty.

Industry reports reveal that one AR brand, rushing to seize market share, launched a product with glaring optical shortcomings:

For example, virtual images suffered >3% distortion at the edges, making them appear unnatural—like a floating "small screen" that failed to blend into the user’s field of view. The fixed-focal-length design forced prolonged eye strain, with many users reporting dizziness after 30 minutes of use.

Under strong light (e.g., outdoors or near car windows), colorful glare appeared at the lens edges, with feedback citing "eye fatigue within 10 minutes." Low optical efficiency also drained battery life, requiring manual high-brightness mode in sunlight.

In stark contrast, the newly launched Leion Hey2 overcomes these hurdles with integrated optics and low-power system design, setting a new benchmark.

Leion Hey2 refines diffractive waveguide technology by arranging hundreds of thousands of gratings within just 1 cm, while slimming the optical lens to 0.4 mm—half the thickness of a bank card—enabling all-day comfort without the bulk of traditional AR glasses.

Its micro-sized light engine (as small as a red bean, weighing 0.3g) delivers exceptional brightness and clarity, equivalent to lighting 30 million bulbs in a 15㎡ room.

With 2,500 nits of eye-facing brightness—far surpassing the industry’s 1,000–1,500 nits standard—Leion Hey2 ensures legible subtitles even in direct sunlight, ending the era of "dim, unreadable" AR displays.

Moreover, Leion Hey2’s glare-free lenses reduce rainbow effects by 98%. Each lens undergoes precise grating design and material tuning to maintain clear, artifact-free visuals across angles and lighting conditions.

Notably, Leion Hey2 projects information within the horizontal line of sight, suspending translation subtitles 2–3 meters away—aligning with the eye’s natural focus range. This ensures seamless, strain-free viewing for both near and far distances, offering smooth, natural communication.