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South Korea’s LetinAR is building optics behind AI glasses
韩国LetinAR打造AI眼镜关键光学元件，已有摩托头盔实景导航即将上路，揭示智能眼镜战场最新突破。
A lens the size of a thumbnail — and the South Korean startup that makes it could become the optical backbone of the AI glasses era.