Holographic display apparatus and method for providing expanded viewing window
AssigneeSamsung Electronics Co., Ltd.
InventorsJungkwuen An, Hoon Song, Hongseok Lee, Wontaek Seo
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Abstract
Provided is a holographic display apparatus including a light source configured to emit light, a spatial light modulator configured to form a hologram pattern to modulate the light incident thereon and reproduce a hologram image, the spatial light modulator including a plurality of display pixels that are arranged two-dimensionally, and an optical element provided opposite a light incidence surface of the spatial light modulator or a light exit surface of the spatial light modulator, the optical element including an array of a plurality of light transmission patterns that are arranged irregularly.
Claims39
A holographic display apparatus comprising:
- a light source configured to emit light;
- a spatial light modulator configured to form a hologram pattern to modulate the light incident thereon and reproduce a hologram image, the spatial light modulator comprising a plurality of display pixels that are arranged two-dimensionally;
- an optical element provided opposite a light incidence surface of the spatial light modulator or a light exit surface of the spatial light modulator, the optical element comprising an array of a plurality of light transmission patterns, the plurality of light transmission patterns being arranged irregularly;
- an image processor configured to:
- generate hologram data based on the hologram image to be reproduced at a resolution corresponding to a resolution of the array of the plurality of light transmission patterns,
- extract hologram data that correspond to positions of the plurality of light transmission patterns among the generated hologram data, and
- provide the extracted hologram data to the spatial light modulator.
A display method performed by a holographic display apparatus comprising a spatial light modulator configured to form a hologram pattern to modulate an incident light and reproduce a hologram image and comprising a plurality of display pixels that are arranged two-dimensionally, and an optical element provided opposite to a light incidence surface of the spatial light modulator or a light exit surface of the spatial light modulator and comprising an array of a plurality of light transmission patterns, the plurality of light transmission patterns being arranged irregularly, the display method comprising:
- calculating a computer generated hologram (CGH) having a resolution greater than an actual resolution of the spatial light modulator;
- sampling the calculated CGH based on positions of the plurality of light transmission patterns of the optical element such that CGH data that correspond to positions of the plurality of light transmission patterns are extracted among the calculated CGH;
- and
- forming, by the spatial light modulator, the hologram pattern based on the sampled CGH data.
A holographic display apparatus comprising:
- a light source configured to emit light;
- a spatial light modulator configured to form a hologram pattern to modulate the light incident thereon and reproduce a hologram image, the spatial light modulator comprising a plurality of display pixels that are provided two-dimensionally;
- and
- an optical element comprising a plurality of light transmission patterns that are comprise a plurality of openings that are irregularly provided on an opaque substrate,
- wherein the plurality of display pixels of the spatial light modulator corresponds to the plurality of light transmission patterns, respectively, and
- wherein a size of each of the plurality of openings being less than a size of each of the plurality of display pixels of the spatial light modulator.
Dependencies are inferred from the claim text.