LIGHT AND LIGHT SENSOR
First Claim
1. An LED-based light tube for use in a conventional fluorescent fixture comprising:
- a housing including a light transmitting portion;
at least one electrical connector attached to the housing and configured for engagement with the conventional fluorescent fixture;
at least one LED arranged to produce light in a direction toward the light transmitting portion;
a sensor operable to detect a brightness level and output a signal corresponding to the detected brightness level; and
a controller in electrical communication with the at least one electrical connector and operable to;
compare the signal to a predetermined value corresponding to a desired brightness level; and
control an amount of power provided to the at least one LED in response to the signal to adjust the light produced by the at least one LED to achieve the desired brightness level.
2 Assignments
0 Petitions
Accused Products
Abstract
An LED-based light tube for use in a conventional fluorescent fixture includes a housing including a light transmitting portion, at least one electrical connector attached to the housing and configured for engagement with the conventional fluorescent fixture, at least one LED arranged to produce light in a direction toward the light transmitting portion, a sensor operable to detect a brightness level and output a signal corresponding to the detected brightness level, and a controller in electrical communication with the at least one electrical connector, operable to: compare the signal to a predetermined value corresponding to a desired brightness level and control an amount of power provided to the at least one LED in response to the signal to adjust the light produced by the at least one LED to achieve the desired brightness level.
33 Citations
20 Claims
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1. An LED-based light tube for use in a conventional fluorescent fixture comprising:
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a housing including a light transmitting portion; at least one electrical connector attached to the housing and configured for engagement with the conventional fluorescent fixture; at least one LED arranged to produce light in a direction toward the light transmitting portion; a sensor operable to detect a brightness level and output a signal corresponding to the detected brightness level; and a controller in electrical communication with the at least one electrical connector and operable to; compare the signal to a predetermined value corresponding to a desired brightness level; and control an amount of power provided to the at least one LED in response to the signal to adjust the light produced by the at least one LED to achieve the desired brightness level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for measuring the efficiency of a light comprising:
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an LED-based light including at least one electrical connector compatible with a standardized light fixture, at least one LED, and a controller in electrical communication with the at least one electrical connector and operable to control the at least one LED; and a sensor in communication with the controller and operable to detect a brightness level; wherein the controller is operable to estimate an efficiency of the at least one LED at least partially based on the brightness level detected by the sensor. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An LED-based light for use in a conventional fixture comprising:
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a housing including a light transmitting portion; at least one electrical connector attached to the housing and configured for engagement with the conventional fixture; at least one LED arranged to produce light in a direction toward the light transmitting portion; means for transmitting a signal corresponding to lighting information of the LED-based light; wherein the transmitted signal is usable by a remote controller to control a predetermined function separate from the LED-based light. - View Dependent Claims (19, 20)
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Specification