Pulsed LED scan-ring array for boosting display system lumens
First Claim
Patent Images
1. A display apparatus comprising:
- a substrate;
a plurality of light emitting diodes (LEDs) coupled to the substrate; and
an optical element located adjacent to at least one of the LEDs, wherein the optical element and the plurality of LEDs are movable relative to one another so that the optical element is adjacent to different ones of the LEDs at different times.
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Abstract
A display apparatus 200 includes a substrate 219 and a number of light emitting diodes (LEDs) 202 coupled to the substrate. An optical element 207 such as a shroud or an integrator rod is located adjacent to at least one of the LEDs. In operation, the optical element and the LEDs are movable relative to one another so that the optical element is adjacent to different ones of the LEDs at different times.
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Citations
69 Claims
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1. A display apparatus comprising:
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a substrate;
a plurality of light emitting diodes (LEDs) coupled to the substrate; and
an optical element located adjacent to at least one of the LEDs, wherein the optical element and the plurality of LEDs are movable relative to one another so that the optical element is adjacent to different ones of the LEDs at different times. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A display apparatus comprising:
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a plurality of LEDs mounted along a periphery of a substrate;
a microlens array overlying the plurality of LEDs;
a motor located in substantial alignment with a center point of the substrate; and
an optical collection shroud coupled to the motor so as to rotate relative to the plurality of LEDs. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A display system comprising:
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a plurality of LEDs;
an optical element located to receive light from at least one of the LEDs, the optical element and the plurality of LEDs being movable relative to each other so that the optical element is adjacent to different ones of the LEDs at different times;
an integrator rod located to receive light from the optical element;
a relay lens located to receive light from the integrator rod;
a spatial light modulator located to receive light from the relay lens; and
a projection lens located to receive light from the spatial light modulator. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method of displaying video signals using a plurality of LEDs and an optical element, the method comprising:
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sequentially turning on ones of the plurality of LEDs;
directing light from turned-on LEDs to an optical element by moving at least one of the plurality of LEDs or the optical element so that the optical element is adjacent the turned on ones of the LEDs;
directing the light from the optical element toward a spatial light modulator; and
directing a modulated version of the light from the spatial light modulator. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A display system comprising:
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a first plurality of LEDs arranged in a ring;
an optical element located to receive light from at least one of the LEDs, the optical element and the first plurality of LEDs being movable relative to each other so that the optical element is adjacent to different ones of the LEDs at different times;
a second plurality of LEDs;
an optical integrator located to receive light from the optical element and the second plurality of LEDs;
a relay lens located to receive light from the optical integrator; and
a spatial light modulator located to receive light from the relay lens. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69)
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Specification