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US 7,924,485 B2Granted
Color dispersion compensated holographic light guide plate
AssigneeSamsung Electronics Co., Ltd.
InventorsSeung-ryong Park, Seok-ho Song, Hong-seok Lee
Life of this patent
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Abstract
A holographic light guide plate has a transparent substrate and a plurality of diffraction patterns formed thereon. The diffraction patterns are arranged on one of a top surface and a bottom surface of the transparent substrate. The diffraction patterns diffract light incident on the transparent substrate. Each of the diffraction patterns has a continuously varying interval.
Claims9
A holographic light guide plate comprising:
- a transparent substrate;
- and
- a plurality of diffraction patterns arranged on one of a top surface and a bottom surface of the transparent substrate, wherein the diffraction patterns diffract light incident on the transparent substrate,
- wherein each of the diffraction patterns has a continuously varying period distribution, and
- the period distributions of the plurality of diffraction patterns vary within a range of periods through which red, green, and blue light is emitted vertically.
2 more elements
An illumination unit for a display device, comprising:
- a transparent substrate;
- at least one light source disposed adjacent to a side of the transparent substrate;
- and
- a plurality of diffraction patterns arranged on one of a top surface and a bottom surface of the transparent substrate, wherein the diffraction patterns diffract light incident on the transparent substrate,
- wherein each of the diffraction patterns has a continuously varying period distribution, and
- the period distributions of the plurality of diffraction patterns vary within a range of periods in which red, green, and blue light is emitted vertically.
3 more elements
Dependencies are inferred from the claim text.