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    • 5. 发明授权
    • LED drive circuit and LED illumination apparatus using the same
    • LED驱动电路和使用其的LED照明装置
    • US08692469B2
    • 2014-04-08
    • US13618534
    • 2012-09-14
    • Takayuki ShimizuAtsushi KanamoriHirohisa WaritaTakeshi Murata
    • Takayuki ShimizuAtsushi KanamoriHirohisa WaritaTakeshi Murata
    • H05B37/00
    • H05B33/0809H05B33/0845H05B39/044
    • An LED drive circuit connectable to a phase control type light adjuster includes a first reference voltage generation portion that generates a first reference voltage, a second reference voltage generation portion that generates a second reference voltage according to a phase angle of the light adjuster, an input voltage detection portion that detects a size relationship between an input voltage and a threshold value voltage, a current draw-out portion that draws out a current in accordance with the first reference voltage or the second reference voltage from an electricity supply line that supplies electricity to an LED drive portion, and a switch portion that in accordance with a detection result by the input voltage, detection portion, performs switching between an output from the first reference voltage generation portion to the current draw-out portion and an output from the second reference voltage generation portion to the current draw-out portion.
    • 可连接到相位控制型光调节器的LED驱动电路包括产生第一参考电压的第一参考电压产生部分,根据光调节器的相位角产生第二参考电压的第二参考电压产生部分, 电压检测部,其检测输入电压和阈值电压之间的大小关系;电流抽出部,其根据所述第一参考电压或所述第二参考电压从供电线提取电流; LED驱动部分和开关部分,根据输入电压的检测结果,检测部分执行从第一参考电压产生部分到电流抽出部分的输出和第二参考的输出之间的切换 电压产生部分到电流引出部分。
    • 6. 发明授权
    • LED drive circuit and LED illumination component using the same
    • LED驱动电路和LED照明组件使用相同
    • US08653751B2
    • 2014-02-18
    • US13189250
    • 2011-07-22
    • Takayuki ShimizuAtsushi KanamoriHirohisa Warita
    • Takayuki ShimizuAtsushi KanamoriHirohisa Warita
    • H05B37/02
    • H05B33/0815H05B33/0818Y02B20/347Y02B20/383
    • An LED drive circuit is provided that can be connected to an alternating current power source via a phase-control light controller and drives an LED load. The LED drive circuit includes: a switching power source portion having a switching element, a switching current detection portion that detects a switching current, and an LED current detection portion that detects an LED current; a first subtraction portion that subtracts a given value from an output of the switching current detection portion; a first determination portion that determines, through computation on a plurality of externally inputted voltages, a target value to which the switching current is limited; a second subtraction portion that subtracts a given value from an output of the LED current detection portion; a second determination portion that determines, through computation on a plurality of externally inputted voltages, a target value of the LED current; a switching current limitation portion that, if a result of the subtraction by the first subtraction portion exceeds a result of the determination by the first determination portion, switches off the switching element so as to limit the switching current; and an LED current control portion that drives the switching element to control the LED current so that a result of the subtraction by the second subtraction portion coincides with a result of the determination by the second determination portion.
    • 提供LED驱动电路,其可以经由相位控制光控制器连接到交流电源并驱动LED负载。 LED驱动电路包括:具有开关元件的开关电源部,检测开关电流的开关电流检测部,以及检测LED电流的LED电流检测部; 第一减法部分,从开关电流检测部分的输出中减去给定值; 第一确定部分,通过对多个外部输入的电压进行计算,确定限制了开关电流的目标值; 第二减法部分,从LED电流检测部分的输出中减去给定值; 第二确定部分,通过对多个外部输入电压的计算确定LED电流的目标值; 开关电流限制部,其中,如果由所述第一减法部分减法的结果超过所述第一确定部分的确定结果,则切换所述开关元件以限制所述开关电流; 以及LED电流控制部分,其驱动开关元件来控制LED电流,使得由第二减法部分减法的结果与第二确定部分的确定结果一致。
    • 9. 发明授权
    • Heat treatment method of ZnTe single crystal substrate and ZnTe single crystal substrate
    • ZnTe单晶衬底和ZnTe单晶衬底的热处理方法
    • US08476171B2
    • 2013-07-02
    • US11988755
    • 2006-07-18
    • Toshiaki AsahiKenji SatoTakayuki Shimizu
    • Toshiaki AsahiKenji SatoTakayuki Shimizu
    • H01L21/00
    • C30B29/48C30B33/02H01L21/477
    • The present invention is to provide a heat treatment method for effectively eliminating Te deposits in a ZnTe single crystal substrate, and a ZnTe single crystal substrate having an optical characteristic suitable for use of a light modulation element and having a thickness of 1 mm or more. A heat treatment method of a ZnTe single crystal substrate, includes: a first step of increasing a temperature the ZnTe single crystal substrate to a first heat treatment temperature T1, and retaining the temperature of the substrate for a predetermined time; and a second step of gradually reducing the temperature of the substrate from the first heat treatment temperature T1 to a second heat treatment temperature T2 lower than the heat treatment temperature T1 with a predetermined rate, wherein the first heat treatment temperature T1 is set in a range of 700° C.≦T1≦1250° C. and the second heat treatment temperature T2 is set in a range of T2≦T1−50.
    • 本发明提供一种用于有效地消除ZnTe单晶衬底中的Te沉积物的热处理方法,以及具有适合于使用光调制元件并具有1mm以上厚度的光学特性的ZnTe单晶衬底。 ZnTe单晶衬底的热处理方法包括:将ZnTe单晶衬底的温度提高到第一热处理温度T1并将衬底的温度保持预定时间的第一步骤; 以及以预定的速率逐渐将基板的温度从第一热处理温度T1逐渐降低到低于热处理温度T1的第二热处理温度T2的第二步骤,其中第一热处理温度T1设定在一定范围内 在T1 @ 1250℃下为700℃,第二热处理温度T2设定在T2 @ T1-50的范围内。