Slim backlight unit for holographic display device and holographic display device including the same
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United States of America Patent
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Nov 26, 2019
Grant Date -
Feb 1, 2018
app pub date -
Dec 27, 2016
filing date -
Jul 26, 2016
priority date (Note) -
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Abstract
A backlight unit for a binocular-holographic display device and a holographic display device including the same are provided. The backlight unit includes a light source unit which outputs light, a first beam expansion unit which expands, in a first direction, the light output from the light source unit, a second beam expansion unit which expands, in a second direction perpendicular to the first direction, the light output from the first beam expansion unit, and a beam deflection unit which diffracts light incident on the first beam expansion unit. The holographic display device includes the backlight unit, a field lens, and a spatial light modulator.
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