Ultracompact and high-efficiency liquid-crystal-on-silicon light engines for augmented reality glasses

https://phys.org/news/2024-06-ultracompact-high-efficiency-liquid-crystal.html

"ultra-compact, high optical efficiency illumination with light guide plate for liquid crystal on silicon AR glasses, efficiently directing light source to  liquid crystal panel... LED array or laser diode light souce attaced using in-coupling prism, propagates at top and bottom surfaces... polarization states manipulated pixel-by-pixel... outstanding color performance, plastic's lower refractive index n = 1.7 lowers cost... low power AR glasses... education, training, retail, marketing, navigation"

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