Sapphire Protective Lenses for AI Smart Glasses: 1–2 Week Prototypes, Cost Credited to Production
Sapphire protective-lens prototypes for AI smart glasses typically take 1–2 weeks at SunYin Sapphire, and the prototype cost is credited against your production order — so qualifying the design carries no net extra cost. A single-piece prototype is accepted before any volume commitment.
Built for the optics AI glasses actually need
Protective lenses for AI glasses demand hardness, optical clarity and durability. Sapphire is Mohs 9 — second only to diamond — and takes AR and AF coatings without the haze that softer materials develop. Because we grow, form, polish and coat in-house, prototype geometry and coating can be iterated quickly.
Optical performance
| Metric | Value |
|---|---|
| Uncoated transmission (380–780 nm) | 84–86% |
| Single-sided AR | ≥89% |
| Double-sided AR | ≥95% |
| AF water contact angle | ≥115° initial; ≥110° after 3,000 steel-wool cycles |
| Machining range | φ2–300 mm; circular OD ±0.01 mm |
Frequently asked questions
How long is a sapphire lens prototype?
Typically 1–2 weeks, depending on geometry and coating complexity.
Is the prototype fee refunded?
The prototype cost is credited against your production order.
Can you do just one unit first?
Yes — single-piece prototypes are accepted.
https://www.sunyinsapphire.com/
SUN YIN CRYSTAL INDUSTRY COMPANY LTD
