Hlavný rozdiel medzi aktívnou a pasívnou 3D technológiou je spôsob zobrazenia tretieho rozmeru. Kým aktívna technológia zobrazí plné Full HD rozlíšenie, pri pasívnej sa musíte uspokojiť s rozlíšením polovičným.
Aktívna technológia dokáže zobraziť filmy s tretím rozmerom v ich plnom rozlíšení a neunikne vám tak žiaden detail. Televízor striedavo zobrazuje obraz pre ľavé a pre pravé oko, zatiaľ čo okuliare na vašich očiach striedavo zatemňujú sklo pred pravým a pred ľavým okom. Výsledkom je tak dokonale realistický a plnohodnotný obraz v treťom rozmere s možnosťou sledovania až z uhla 178°.
Pasívna technológia je oproti technológii aktívnej oveľa lacnejšia. Jej nevýhodou je však zobrazovanie iba polovičného rozlíšenia. Okuliare sú na rozdiel od aktívnych úplne bez napájania a elektroniky, obsahujú iba dva rôzne polarizačné filtre. Televízor obraz rozdelí na dva samostatné s rôznou polarizáciou, z ktorých jeden prejde do jedného a druhý do druhého, čím je opäť dosiahnutý tretí rozmer.
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