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专利名称：Lighting apparatus capable of adjusting light
quality, duty ratio and frequency in a plantgrowth chamber using light emitting diodes
发明人：Wei Fang,Rueychi Jao,Den Hua Lee申请号：US09833562申请日：20010413
公开号：US20010047618A1公开日：20011206
摘要：A plant growth apparatus that includes a chamber with multiple layers, a driverand at least one lamp per layer provided in the chamber. The lamp includes a plurality ofhigh intensity red light emitting diodes and a plurality of blue light emitting diodes. Thered and blue light emitting diodes are alternately arranged. The driver is capable ofindividually controlling the intensity of red and blue light, thus, leading to the capabilityof controlling the light quality. The driver is also capable of controlling the frequencyand duty ratio of direct current provided to the red and blue light emitting diodes duringthe light-period of the photoperiod controlled by the timer.
申请人：FANG WEI,JAO RUEYCHI,LEE DEN HUA
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