Led array systems
First Claim
1. An optical assembly for emitting light, comprising:
- an array of inorganic light emitting diodes (LEDs) mounted to a substrate, the LEDs emitting light in a direction generally perpendicular to the substrate; and
an optical sheet disposed over the LEDs, at least a portion of light entering one side of the optical sheet from the LEDs being guided within the optical sheet in a direction generally parallel to the substrate.
1 Assignment
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Accused Products
Abstract
A light emitting diode (LED) array comprises an array of LEDs mounted to a substrate. The LEDs emit light in a direction generally perpendicular to the substrate. An optical sheet is disposed over the LEDs. At least a portion of light entering one side of the optical sheet from the LEDs is guided within the optical sheet in a direction generally parallel to the substrate. Light extraction features direct light from the optical sheet in a generally forward direction. Such an array is useful for several applications, including space lighting, direct information display and backlighting of liquid crystal displays. The light spreading effect of the optical sheet reduces the amount of black space between LED pixels.
331 Citations
89 Claims
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1. An optical assembly for emitting light, comprising:
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an array of inorganic light emitting diodes (LEDs) mounted to a substrate, the LEDs emitting light in a direction generally perpendicular to the substrate; and
an optical sheet disposed over the LEDs, at least a portion of light entering one side of the optical sheet from the LEDs being guided within the optical sheet in a direction generally parallel to the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. A light emitting system having a plurality of individually illuminated light emitting elements, the system comprising:
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an array of inorganic light emitting diodes (LEDs), different LEDs corresponding to respective light emitting elements of the light emitting system;
a light spreader sheet disposed over the LEDs, light entering the light spreader sheet from the LEDs being spread transversely within the spreader sheet over an area corresponding to the respective light emitting elements of the light emitting system, the light spreader sheet comprising light directing features that direct the spread light out of the spreader sheet. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75)
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76. A light emitting system having a plurality of individually illuminated light emitting elements, the system comprising:
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an array of inorganic light emitting diodes (LEDs) emitting light generally in a light emission direction;
light spreading means for laterally spreading light in a direction across the array of the LEDs; and
light directing means for directing light from the light spreading means in a desired illumination direction.
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77. An assembly for emitting light, comprising:
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an array of inorganic light emitting diodes (LEDs) arranged on a substrate to emit light generally in a light emission direction;
an array of reflectors disposed with the LEDs, the reflectors defining individual portions of a reflector sheet, the reflectors having respective apertures, respective LEDs of the array of LEDs protruding through the respective apertures, the substrate being positioned to a first side of the reflector sheet, light emitting surfaces of the LEDs being positioned to a second, reflecting side of the reflector sheet; and
a screen layer disposed on the second side of the reflector sheet, at least some of the light from the LEDs being directed by the screen layer after reflecting off the curved reflectors. - View Dependent Claims (78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89)
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Specification