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{"id":2267446,"date":"2019-12-16T13:11:46","date_gmt":"2019-12-16T12:11:46","guid":{"rendered":"https:\/\/www.phonandroid.com\/?p=2267446"},"modified":"2021-01-07T15:26:04","modified_gmt":"2021-01-07T14:26:04","slug":"apple-glass-ar-la-firme-pourrait-utiliser-une-technique-daffichage-holographique","status":"publish","type":"post","link":"https:\/\/www.phonandroid.com\/apple-glass-ar-la-firme-pourrait-utiliser-une-technique-daffichage-holographique.html","title":{"rendered":"Apple Glass, AR : la firme pourrait utiliser une technique d’affichage holographique"},"content":{"rendered":"

Les Apple Glass (AR) ou un \u00e9ventuel casque de r\u00e9alit\u00e9 virtuelle de la firme pourraient b\u00e9n\u00e9ficier d'une nouvelle technique d'affichage holographique. Celle-ci, d\u00e9crite dans un nouveau brevet, permettrait d'am\u00e9liorer le rendu d'image, tout en rendant l'appareil plus simple \u00e0 fabriquer, moins cher, et plus l\u00e9ger. Elle repose sur l'utilisation de “guides d'ondes lumineuses” et de coupleurs – une approche in\u00e9dite.\u00a0<\/strong><\/p>\n

\"Casque<\/p>\n

On ne sait pas en soit si cette technologie se retrouvera vraiment dans un produit AR estampill\u00e9 Apple<\/a> – mais au vu du nombre de brevets d\u00e9pos\u00e9s par la firme ces derniers mois<\/a>, ce \u00e9ni\u00e8me d\u00e9p\u00f4t montre en tout cas que la firme explore des options int\u00e9ressantes. Dans ce document, on d\u00e9couvre donc une nouvelle m\u00e9thode pour afficher des images dans des casques ou lunettes de r\u00e9alit\u00e9 virtuelle. Les appareils actuels reposent tous sur le m\u00eame syst\u00e8me : de petits \u00e9crans et un syst\u00e8me de lentilles pr\u00e8s des yeux et dans l'alignement de ces derniers.<\/p>\n

Simple \u00e0 comprendre, cette approche n'est n\u00e9anmoins pas exempte de d\u00e9fauts. D'abord elle g\u00e9n\u00e8re des aberrations chromatiques et g\u00e9om\u00e9triques : les composantes des couleurs bavent sur les zones externes des lentilles et l'image est plus ou moins d\u00e9form\u00e9e en fonction de la qualit\u00e9 des optiques. Et plus l'on souhaite gommer ces effets, plus le dispositif prend en complexit\u00e9 et augmente son co\u00fbt de fabrication. Il y a \u00e9galement des angles morts, et autres joyeuset\u00e9s comme la bu\u00e9e qui a tendance \u00e0 se former sur ces lentilles si pr\u00e8s du visage.<\/p>\n

Lire \u00e9galement :\u00a0Apple lancerait les Apple Glass, l'iPhone SE 2 et un nouvel iPad Pro d\u00e9but 2020<\/a><\/strong><\/p>\n