Waveguide based light source
First Claim
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1. An apparatus for generating light, comprising:
- a substrate including a waveguide pattern thereon;
a phosphor deposited upon said substrate that forms a waveguide that matches the waveguide pattern, said waveguide having a substantially planar shape and further having a waveguide direction within the plane of the waveguide and an exit region at an end of the waveguide direction; and
wherein the phosphor can receive excitation energy from an excitation source in a direction substantially perpendicular to the plane of the waveguide, and can generate light within the phosphor, wherein the light travels in the waveguide direction and exits the waveguide at the exit region.
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Abstract
A wave guide based light source having a phosphor film with a large two-dimensional extent and a small thickness. The phosphor film is excited by an excitation means.
47 Citations
19 Claims
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1. An apparatus for generating light, comprising:
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a substrate including a waveguide pattern thereon;
a phosphor deposited upon said substrate that forms a waveguide that matches the waveguide pattern, said waveguide having a substantially planar shape and further having a waveguide direction within the plane of the waveguide and an exit region at an end of the waveguide direction; and
wherein the phosphor can receive excitation energy from an excitation source in a direction substantially perpendicular to the plane of the waveguide, and can generate light within the phosphor, wherein the light travels in the waveguide direction and exits the waveguide at the exit region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for generating light for use in video display, comprising:
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one or more substrates including a waveguide pattern or patterns thereon;
one or more phosphors deposited upon said substrates and forming waveguides that matches the waveguide patterns, said waveguides each having a substantially planar shape and further having a waveguide direction within the plane of the waveguide and an exit region at an end of the waveguide direction;
wherein the phosphors can receive excitation energy from an excitation source in a direction substantially perpendicular to the planes of the waveguides, and can generate light within the phosphor, wherein the light travels in the waveguide direction and exits the waveguide at the exit region; and
wherein the output of each waveguide is used to form a display pixel at its respective exit region for use within a video display.
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11. A method of generating light, comprising the steps of:
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providing a substrate including a waveguide pattern thereon;
providing a phosphor deposited upon said substrate that forms a waveguide that matches the waveguide pattern, said waveguide having a substantially planar shape and further having a waveguide direction within the plane of the waveguide and an exit region at an end of the waveguide direction; and
receiving excitation energy at the phosphor from an excitation source in a direction substantially perpendicular to the plane of the waveguide, and generating light within the phosphor, wherein the light travels in the waveguide direction and exits the waveguide at the exit region. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification