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22. 发明专利

JP2009259412A Pulse generation circuit, pulse drive device, light control device, and illuminating device 审中-公开
标题翻译：脉冲发生电路，脉冲驱动装置，光控制装置和照明装置
公开(公告)号：JP2009259412A
公开(公告)日：2009-11-05
申请号：JP2008103805
申请日：2008-04-11
申请人： Sharp Corp , シャープ株式会社
发明人： YAMAMOTO MAKOTO
IPC分类号： H05B37/02
CPC分类号： H05B33/0818
摘要： PROBLEM TO BE SOLVED: To provide a pulse generation circuit capable of continuously increasing a load output and improving resolution of a pulse signal at a low duty ratio, a pulse driving device, a dimming device, and an illuminating device.
SOLUTION: In the illuminating device 10, having a light source 1, a power supply circuit section 2 for supplying power to the light source 1, and a control section 4 arranged between the light source 1 and the power supply circuit section 2 and having a FET which performs power supply/shutdown to the light source 1 and a processing section 41 for generating the pulse signal given to the FET and controlling luminous intensity of the light source 1, practical resolution of the pulse signal at the low duty ratio can be increased, without improving the processing section 41 of the control section 4, since the minimum width of a basic pulse of the pulse signal is set to be within a time of a rapid increase range, wherein the current flowing into the light source 1 increases rapidly. The light-emitting intensity of the light source can be increased continuously, in response to the incremental width of the basic pulse, since one cycle of the pulse signal is established so as to lie be within the rise time of the current flowing the light source 1.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题：提供能够连续增加负载输出并提高低占空比的脉冲信号的分辨率的脉冲发生电路，脉冲驱动装置，调光装置和照明装置。解决方案：在具有光源1的照明装置10中，用于向光源1供电的电源电路部分2和布置在光源1和电源电路部分2之间的控制部分4 并且具有对光源1进行电源/关断的FET，以及用于产生施加到FET的脉冲信号并控制光源1的发光强度的处理部41，以低占空比的脉冲信号的实际分辨率可以增加，而不改善控制部分4的处理部分41，因为脉冲信号的基本脉冲的最小宽度被设置在快速增加范围的时间内，其中流入光源1的电流迅速增加响应于基本脉冲的增加宽度，可以连续地增加光源的发光强度，因为脉冲信号的一个周期被建立为在流过光源的电流的上升时间内 1.版权所有（C）2010，JPO＆INPIT

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