Solid state light source based lighting device and

专利名称：Solid state light source based lighting device

and lighting system

发明人：Koji Watanabe,Hiromitsu Mizukawa,Nobuo

Ukita,Kazuhiro Nishimoto

申请号：US13428655申请日：20120323公开号：US08669721B2公开日：20140311

专利附图：

摘要：A lighting device is capable of realizing a stable dimming control in a wide rangeof light output. The lighting device includes a DC power circuit for providing power to a

switching element of the lighting device. A current controller switches the switchingelement to enable a current to flow from the DC power circuit through a solid state lightsource and maintain the current from the DC power circuit through the solid state lightsource current controller at a predetermined current. The current controller includes afirst switching controller operable to change a width of an on-pulse provided to theswitching element and a second switching controller operable to determine a burst-ontime during which the on-pulses determined by the first switching controller are providedto the switching element. The burst-on time is longer than an on-pulse period of the firstswitching controller.

申请人：Koji Watanabe,Hiromitsu Mizukawa,Nobuo Ukita,Kazuhiro Nishimoto

地址：Kyoto JP,Osaka JP,Hyogo JP,Nara JP

国籍：JP,JP,JP,JP

代理人：Waddey Patterson,Mark J. Patterson,Mark A. Pitchford

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