Lighting apparatus and methods providing variable illumination characteristics based on object detection
First Claim
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1. A system comprising:
- a plurality of light emitting devices (LEDs) configured to be mounted on a stationary structure; and
a control circuit operatively coupled to the plurality of LEDs configured to detect an object in a vicinity of the plurality of LEDs and to vary a directionality of illumination produced by the plurality of LEDs responsive to the detection of the object by selectively controlling current to the plurality of LEDs,wherein the control circuit is configured to reduce light emission towards the detected object of a first subset of the plurality of LEDs while increasing illumination of a second subset of the plurality of LEDs.
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Abstract
A system includes at least one light-emitting device configured to be mounted on a stationary structure, such as a lighting pole or parking structure. A control circuit is operatively coupled to the at least one light-emitting device and configured to detect an object in a vicinity of the at least one light-emitting device and to vary a characteristic of illumination produced by the at least one light-emitting device responsive to the detection of the object.
25 Citations
26 Claims
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1. A system comprising:
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a plurality of light emitting devices (LEDs) configured to be mounted on a stationary structure; and a control circuit operatively coupled to the plurality of LEDs configured to detect an object in a vicinity of the plurality of LEDs and to vary a directionality of illumination produced by the plurality of LEDs responsive to the detection of the object by selectively controlling current to the plurality of LEDs, wherein the control circuit is configured to reduce light emission towards the detected object of a first subset of the plurality of LEDs while increasing illumination of a second subset of the plurality of LEDs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system comprising:
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at least one light emitting device (LED) luminaire comprising a plurality of LEDs configured to be mounted on a stationary structure; a control circuit configured to selectively illuminate LEDs of the at least one LED luminaire to vary a directionality of light emitted by the at least one LED luminaire by selectively driving at least one of the plurality of LEDs of the at least one LED luminaire, wherein the control circuit is configured to detect an object in a vicinity of the at least one LED luminaire and to reduce light emission towards the detected object responsive to the detection of the object, wherein a first LED of the plurality of LEDs is configured to direct illumination in a first direction, and wherein a second LED of the plurality of LEDs is configured to direct illumination in a second direction, different from the first direction, and wherein the control circuit is configured to vary the directionality of the light emitted by the at least one LED luminaire by decreasing a first intensity of light emitted from the first LED and increasing a second intensity of light emitted from the second LED. - View Dependent Claims (14, 15, 16, 17)
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18. A system comprising:
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a plurality of LED luminaires located at respective stationary positions wherein respective ones of the plurality of LED luminaires comprise a plurality of light emitting devices (LEDs); and a control circuit operatively coupled to the plurality of LED luminaires and configured to vary a directionality of illumination produced by the LED luminaires responsive to detection of movement of objects in relation to the LED luminaires by selectively controlling current to at least one of the plurality of LED luminaires, wherein varying the directionality of the illumination produced by the LED luminaires comprises selectively varying a color of light emitted by a first subset of the plurality of LEDs of one of the plurality of LED luminaires responsive to the detection of the movement of the objects without varying a color of light emitted by a second subset of the plurality of LEDs of the one of the plurality of LED luminaires. - View Dependent Claims (19, 20)
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21. A method comprising:
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detecting an object in a vicinity of a plurality of light-emitting devices (LEDs) mounted on a stationary structure; and varying a directionality of illumination produced by the plurality of LEDs by selectively driving the plurality of LEDs responsive to detecting the object, wherein varying the directionality of the illumination produced by the plurality of LEDs comprises selectively varying a color of light emitted by a first subset of the plurality of LEDs towards the detected object responsive to the detection of the object without varying a color of light emitted by a second subset of the plurality of LEDs. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification