COLOR-COMPENSATING FLUORESCENT-LED HYBRID LIGHTING
First Claim
1. A lighting system comprising LED elements, a fluorescent lamp, and a color/brightness sensor, wherein the color/brightness sensor measures a combined light output of both the fluorescent lamp and the LED elements.
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Accused Products
Abstract
A hybrid fluorescent-LED lighting system comprising a controller, LED elements, fluorescent lamp, and a color/brightness sensor, wherein the color/brightness sensor measures a combined light output of both the fluorescent lamp and the LED elements. A method for controlling the hybrid fluorescent LED lighting system includes receiving a request for brightness/color, setting a fluorescent lamp output to a particular brightness level, setting output of LEDs to a particular brightness level, measuring a combined output of the fluorescent lamp and LEDs; and adjusting the output of LEDs until the total output of the fluorescent lamp and LEDs matches the request for brightness/color. Adjusting the output of LEDs may include the step of driving a specific spectrum range of the LEDs as necessary in order to fill-in variances in a spectrum range of the fluorescent lamp. The method further allows modifying the color of light output. The method also provides a smooth transition from a current state of the lighting system to the received request for brightness/color by over-driving the LEDs beyond a steady state design rating of the LEDs.
89 Citations
25 Claims
- 1. A lighting system comprising LED elements, a fluorescent lamp, and a color/brightness sensor, wherein the color/brightness sensor measures a combined light output of both the fluorescent lamp and the LED elements.
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15. A method for controlling a hybrid fluorescent LED lighting system, the method comprising the steps of:
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Receiving a request for brightness/color; Setting a fluorescent lamp output to a particular brightness level; Setting output of LEDs to a particular brightness level; Measuring a combined output of the fluorescent lamp and LEDs; and Adjusting the output of LEDs until the total output of the fluorescent lamp and LEDs matches the request for brightness/color. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification