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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