Photosensor employing a fiber optic collector
First Claim
1. A lighting control system comprising:
- a light fixture having a housing with an outer surface and an inner surface;
one or more driven lighting sources mounted within the housing;
an ambient light sensor mounted within the housing and configured to generate signals representative of an ambient light condition;
a controller configured toreceive the signals from the ambient light sensor, andregulate an operating current to the one or more driven lighting sources based on a desired lighting output level and the ambient light condition; and
an ambient lighting channel extending from the ambient light sensor to an aperture between the outer surface of the housing and the inner surface of the housing.
3 Assignments
0 Petitions
Accused Products
Abstract
A lighting control system for a light fixture has an ambient light sensor mounted therein. A switching circuit provides power for driving lighting sources. A controller receives signals from the light sensor and regulates switching frequencies based on desired lighting output level and the ambient light condition. An ambient lighting channel extends from the ambient light sensor to an aperture between outer and inner surfaces of the housing. The ambient lighting channel may include a fiber optic light pipe which extends from the aperture to surround the light sensor. The fiber optic light pipe may extend through the aperture from the ambient light sensor to an ambient light source external to the light fixture. The light sensor may mount on a shared PCB with respect to the lighting sources, such as an LED array, and transmit ambient lighting information to the controller via a feedback loop.
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Citations
25 Claims
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1. A lighting control system comprising:
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a light fixture having a housing with an outer surface and an inner surface; one or more driven lighting sources mounted within the housing; an ambient light sensor mounted within the housing and configured to generate signals representative of an ambient light condition; a controller configured to receive the signals from the ambient light sensor, and regulate an operating current to the one or more driven lighting sources based on a desired lighting output level and the ambient light condition; and an ambient lighting channel extending from the ambient light sensor to an aperture between the outer surface of the housing and the inner surface of the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An LED lighting device comprising:
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a printed circuit board having one or more LED lighting elements mounted thereon; an ambient light sensor mounted on the printed circuit board and configured to generate signals representative of an ambient light condition; and a fiber optic light pipe extending from a first end surrounding the ambient light sensor to a second end and configured to direct light from an ambient light source to the ambient light sensor. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A lighting control system comprising:
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a plurality of light fixtures each having a housing with an outer surface and an inner surface, and one or more driven lighting sources mounted within the housing, wherein at least one of said light fixtures further comprises; an ambient light sensor mounted within the respective housing and configured to generate signals representative of an ambient light condition; an ambient light channel extending from the ambient light sensor to an aperture between the outer surface of the housing and the inner surface of the housing; and a feedback loop to transmit the signals representative of the ambient lighting condition to a controller; wherein the controller is configured to receive the signals from the ambient light sensors for the at least one of said light fixtures, and regulate a lighting output for the driven lighting sources in each of the plurality of light fixtures based on a desired lighting output level and the ambient light condition. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification