3D Display directional backlight based on diffractive elements

Jukka-Tapani Mäkinen (Inventor), Kai Ojala (Inventor)

    Research output: PatentPatent application


    Presented optical method is used in creation of a light field display with small light emitters and diffractive elements that form a directional backlight module. A series of light beams can be generated from a single source towards different directions by adding diffractive elements on top of collimating microlenses. An LCD panel is used as a pixelated spatial light modulator. 3D picture can be formed by modulating the light emitter output and LCD pixels according to the image content at different view directions and a series of unique stereoscopic views is generated.
    Original languageEnglish
    Patent numberWO2019221993 A1
    Priority date17/05/18
    Filing date8/05/19
    Publication statusPublished - 21 Nov 2019
    MoE publication typeNot Eligible


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