公开(公告)号：WO2009095853A2

公开(公告)日：2009-08-06

申请号：PCT/IB2009/050325

申请日：2009-01-27

Applicant: NXP B.V. ,  NGUYEN HOANG, Viet ,  SURDEANU, Radu ,  BANCKEN, Pascal ,  BATAILLOU, Benoit ,  VAN STEENWINCKEL, David

Inventor： NGUYEN HOANG, Viet ,  SURDEANU, Radu ,  BANCKEN, Pascal ,  BATAILLOU, Benoit ,  VAN STEENWINCKEL, David

CPC classification number: H05B33/0818 ,  G01K7/01 ,  H05B33/0866 ,  H05B33/089

Abstract: A method of estimating the junction temperature of a light emitting diode comprises driving a forward bias current through the diode, the current comprising a square wave which toggles between high and low current values (I high , l Iow ), the high current value (l hιgh ) comprising an LED operation current, and the low current value (I IOW ) comprising a non-zero measurement current. The forward bias voltage drop (Vf) is sampled and the forward bias voltage drop (Vf Iow ) is determined at the measurement current (I IOW )- The temperature is derived from the determined forward bias voltage drop.

Abstract translation: 估计发光二极管的结温的方法包括驱动通过二极管的正向偏置电流，该电流包括在高电流值和低电流值（Ihigh，lIow）之间切换的方波，高电流值（lh？gh ）包括LED操作电流，以及包括非零测量电流的低电流值（IIOW）。 正向偏置电压降（Vf）被采样，并且在测量电流（IIOW）下确定正向偏置电压降（VfIow）。 - 从确定的正向偏压电压降导出温度。

公开(公告)号：WO2009101573A2

公开(公告)日：2009-08-20

申请号：PCT/IB2009050531

申请日：2009-02-09

Applicant: NXP BV ,  SURDEANU RADU ,  NGUYEN HOANG VIET ,  BATAILLOU BENOIT ,  BANCKEN PASCAL ,  VAN STEENWINCKEL DAVID

Inventor： SURDEANU RADU ,  NGUYEN HOANG VIET ,  BATAILLOU BENOIT ,  BANCKEN PASCAL ,  VAN STEENWINCKEL DAVID

IPC: H05B33/08

CPC classification number: H05B33/0866

Abstract: A method of determining the dominant output wavelength of an LED, comprises determining an electrical characteristic of the LED which is dependent on the voltage-capacitance characteristics, and analysing the characteristic to determine the dominant output wavelength.

Abstract translation: 确定LED的主输出波长的方法包括确定取决于电压 - 电容特性的LED的电特性，并分析该特性以确定主输出波长。

公开(公告)号：WO2011033339A1

公开(公告)日：2011-03-24

申请号：PCT/IB2009/054102

申请日：2009-09-18

Applicant: NXP B.V. ,  BATAILLOU, Benoit ,  VAN STEENWINCKEL, David ,  SURDEANU, Radu ,  NGUYEN HOANG, Viet ,  BANCKEN, Pascal

Inventor： BATAILLOU, Benoit ,  VAN STEENWINCKEL, David ,  SURDEANU, Radu ,  NGUYEN HOANG, Viet ,  BANCKEN, Pascal

IPC: G02F1/00 ,  G02F1/01

CPC classification number: G02F1/0147 ,  G02B5/008 ,  G02F1/0054 ,  G02F1/19 ,  G02F2201/15 ,  G02F2202/32 ,  G02F2203/055 ,  G02F2203/10

Abstract: An electromagnetic radiation switch (100) for performing a switch function in an electromagnetic radiation propagation path, the electromagnetic radiation switch (100) comprising a substrate (102), a regular arrangement of structures (104) formed on and/or in the substrate (102), wherein at least one of the structures (104) is a phase change material structure (104) changeable between at least two different phase states, and a control unit (106) adapted to control the phase state of the at least one phase change material structure (104) to thereby select one of a plurality of switching states for the electromagnetic radiation propagation path.

Abstract translation: 一种用于在电磁辐射传播路径中执行开关功能的电磁辐射开关（100），所述电磁辐射开关（100）包括衬底（102），形成在衬底上和/或衬底中的规则排列的结构（104） 102），其中所述结构（104）中的至少一个是可在至少两个不同相位状态之间变化的相变材料结构（104），以及适于控制所述至少一个相的相位状态的控制单元（106） 改变材料结构（104），从而选择用于电磁辐射传播路径的多个切换状态之一。

公开(公告)号：WO2010106453A1

公开(公告)日：2010-09-23

申请号：PCT/IB2010/050822

申请日：2010-02-25

Applicant: NXP B.V. ,  DEURENBERG, Peter Hubertus Franciscus ,  KOOLEN, Gert-Jan ,  HOOGZAAD, Gian ,  SURDEANU, Radu ,  BANCKEN, Pascal ,  BATAILLOU, Benoit ,  NGUYEN HOANG, Viet

Inventor： DEURENBERG, Peter Hubertus Franciscus ,  KOOLEN, Gert-Jan ,  HOOGZAAD, Gian ,  SURDEANU, Radu ,  BANCKEN, Pascal ,  BATAILLOU, Benoit ,  NGUYEN HOANG, Viet

IPC: H05B33/08

CPC classification number: H05B33/086 ,  H05B33/0815 ,  H05B33/0848

Abstract: A method is disclosed of controlling a LED, comprising driving the LED with a DC current for a first time, interrupting the DC current for a second time such that the first time and the second time sum to a period, determining at least one characteristic of the LED whilst the DC current is interrupted, and controlling the DC current during a subsequent period in dependence on the at least one characteristic. The invention thus benefits from the simplicity of DC operation. By operating at the LED in a DC mode, rather than say in a PWM mode, the requirement to be able to adjust the duty cycle is avoided. By including interruptions to the DC current, it is possible to utilise the LED itself to act as a sensor in order to determine a characteristic of the LED. The need for additional sensors is thereby avoided.

Abstract translation: 公开了一种控制LED的方法，包括第一次用DC电流驱动LED，第二次中断DC电流，使得第一时间和第二时间总和到一个周期，确定至少一个特性 所述LED在DC电流中断期间，并且根据所述至少一个特性在随后的时段期间控制所述DC电流。 因此，本发明由于DC操作的简单性而受益。 通过在DC模式下操作LED，而不是在PWM模式下说明，可以避免能够调整占空比的要求。 通过包含直流电流的中断，可以利用LED本身作为传感器，以便确定LED的特性。 从而避免了对附加传感器的需要。

公开(公告)号：WO2009095853A3

公开(公告)日：2010-03-11

申请号：PCT/IB2009050325

申请日：2009-01-27

Applicant: NXP BV ,  NGUYEN HOANG VIET ,  SURDEANU RADU ,  BANCKEN PASCAL ,  BATAILLOU BENOIT ,  VAN STEENWINCKEL DAVID

Inventor： NGUYEN HOANG VIET ,  SURDEANU RADU ,  BANCKEN PASCAL ,  BATAILLOU BENOIT ,  VAN STEENWINCKEL DAVID

IPC: H05B33/08

CPC classification number: H05B33/0818 ,  G01K7/01 ,  H05B33/0866 ,  H05B33/089

Abstract: A method of estimating the junction temperature of a light emitting diode comprises driving a forward bias current through the diode, the current comprising a square wave which toggles between high and low current values (Ihigh, lIow), the high current value (lh?gh) comprising an LED operation current, and the low current value (IIOW) comprising a non-zero measurement current. The forward bias voltage drop (Vf) is sampled and the forward bias voltage drop (VfIow) is determined at the measurement current (IIOW)- The temperature is derived from the determined forward bias voltage drop.

Abstract translation: 估计发光二极管的结温的方法包括驱动通过二极管的正向偏置电流，该电流包括在高电流值和低电流值（Ihigh，lIow）之间切换的方波，高电流值（lh？gh ）包括LED操作电流，以及包括非零测量电流的低电流值（IIOW）。 正向偏置电压降（Vf）被采样，并且在测量电流（IIOW）下确定正向偏置电压降（VfIow）。 - 从确定的正向偏压电压降导出温度。

公开(公告)号：WO2010150119A2

公开(公告)日：2010-12-29

申请号：PCT/IB2010/052542

申请日：2010-06-08

Applicant: NXP B.V. ,  NGUYEN HOANG, Viet ,  BANCKEN, Pascal ,  SURDEANU, Radu ,  LAMMERS, Matheus, Johannes, Geradus ,  DEURENBERG, Peter, Hubertus, Franciscus ,  BATAILLOU, Benoit ,  BOCCARDI, Guillaume ,  VELLIANITIS, Georgios

Inventor： NGUYEN HOANG, Viet ,  BANCKEN, Pascal ,  SURDEANU, Radu ,  LAMMERS, Matheus, Johannes, Geradus ,  DEURENBERG, Peter, Hubertus, Franciscus ,  BATAILLOU, Benoit ,  BOCCARDI, Guillaume ,  VELLIANITIS, Georgios

IPC: H05B33/08

CPC classification number: H05B33/0818 ,  G09G3/2003 ,  G09G3/3426 ,  G09G2320/041 ,  G09G2360/145 ,  H05B33/0827 ,  H05B33/0851 ,  H05B33/0866 ,  H05B33/0869

Abstract: In one embodiment, a control system is for controlling a lighting system which comprises a cluster (20) of different colour LEDs. The control system comprises a first control unit (24) for generating amplitude values for the different LEDs of the cluster to provide a desired colour point and a second control unit (38) for controlling pulse width values for the different LEDs to provide a desired brightness. Current sources (32) are provided for individually driving the LEDs of the cluster. This system allows the control of colour point to be independent from the control of brightness of the LED cluster. This provides a low cost solution and a fast, accurate and flexible control to a LED cluster.

Abstract translation: 在一个实施例中，控制系统用于控制包括不同颜色LED的群集（20）的照明系统。 所述控制系统包括用于产生所述簇的不同LED的振幅值以提供所需色点的第一控制单元（24）和用于控制所述不同LED的脉冲宽度值以提供期望亮度的第二控制单元（38） 。 提供电流源（32）用于单独驱动集群的LED。 该系统允许将色点的控制独立于LED簇的亮度控制。 这为LED集群提供了低成本的解决方案和快速，准确和灵活的控制。

公开(公告)号：WO2010049882A2

公开(公告)日：2010-05-06

申请号：PCT/IB2009054737

申请日：2009-10-27

Applicant: NXP BV ,  NGUYEN HOANG VIET ,  BANCKEN PASCAL ,  SURDEANU RADU ,  BATAILLOU BENOIT ,  DEURENBERG PETER HUBERTUS FRAN ,  KOOLEN GERT-JAN ,  HOOGZAAD GIAN

Inventor： NGUYEN HOANG VIET ,  BANCKEN PASCAL ,  SURDEANU RADU ,  BATAILLOU BENOIT ,  DEURENBERG PETER HUBERTUS FRANCISCUS ,  KOOLEN GERT-JAN ,  HOOGZAAD GIAN

CPC classification number: H05B33/0872 ,  H05B33/0818 ,  Y02B20/341

Abstract: A method of operating a light emitting diode (1 ) comprises operating the light emitting diode to provide a desired brightness output and estimating the junction temperature of the light emitting diode based on electrical drive parameters of the light emitting diode. A threshold is derived which determines if there is overheating, and the light emitting diode is operated within the threshold. This method uses junction temperature estimation to implement a system which provides protection from overheating. The method allows an LED to be used at its maximum potential in term of light generation whilst avoiding the need for external temperature measurement.

Abstract translation: 一种操作发光二极管（1）的方法包括操作发光二极管以提供期望的亮度输出，并且基于发光二极管的电驱动参数来估计发光二极管的结温。 导出阈值，其确定是否存在过热，并且发光二极管在阈值内操作。 该方法使用结温估计来实现提供防止过热保护的系统。 该方法允许在光产生的最大电位下使用LED，同时避免对外部温度测量的需要。

公开(公告)号：WO2009144644A1

公开(公告)日：2009-12-03

申请号：PCT/IB2009/052138

申请日：2009-05-21

Applicant: NXP B.V. ,  VAN STEENWINCKEL, David ,  BATAILLOU, Benoit ,  NGUYEN HOANG, Viet ,  SURDEANU, Radu ,  BANCKEN, Pascal

Inventor： VAN STEENWINCKEL, David ,  BATAILLOU, Benoit ,  NGUYEN HOANG, Viet ,  SURDEANU, Radu ,  BANCKEN, Pascal

IPC: G01J1/02 ,  G01J1/32 ,  G01J1/42 ,  G01J1/04

CPC classification number: H05B33/0869 ,  G01J1/02 ,  G01J1/0209 ,  G01J1/04 ,  G01J1/0407 ,  G01J1/0425 ,  G01J1/32 ,  G01J2001/4247 ,  H05B33/0821

Abstract: A light sensor arrangement comprises a first light sensor device (50;70) and a second light sensor device (54;74). The first and second light sensor devices (50;70, 54;74) are exposed to the same incident illumination, and have different functions of light sensor signal with respect to incident wavelength over a common wavelength band of interest. The light sensor signals are processed to derive a monotonic function over the wavelength band of interest and thereby derive a dominant wavelength of the incident light. This approach enables simple light sensor devices to be used, in order to enable a wavelength to be measured.

Abstract translation: 光传感器装置包括第一光传感器装置（50; 70）和第二光传感器装置（54; 74）。 第一和第二光传感器装置（50; 70,54,74）暴露于相同的入射照明，并且在感兴趣的共同波长带上相对于入射波长具有不同的光传感器信号功能。 处理光传感器信号以在感兴趣的波长带上导出单调函数，从而导出入射光的主波长。 这种方法使得能够使用简单的光传感器装置，以便能够测量波长。

公开(公告)号：WO2009101573A3

公开(公告)日：2009-08-20

申请号：PCT/IB2009/050531

申请日：2009-02-09

Applicant: NXP B.V. ,  SURDEANU, Radu ,  NGUYEN HOANG, Viet ,  BATAILLOU, Benoit ,  BANCKEN, Pascal ,  VAN STEENWINCKEL, David

Inventor： SURDEANU, Radu ,  NGUYEN HOANG, Viet ,  BATAILLOU, Benoit ,  BANCKEN, Pascal ,  VAN STEENWINCKEL, David

IPC: H05B33/08

Abstract: A method of determining the dominant output wavelength of an LED, comprises determining an electrical characteristic of the LED which is dependent on the voltage-capacitance characteristics, and analysing the characteristic to determine the dominant output wavelength.

公开(公告)号：WO2010150119A3

公开(公告)日：2011-08-11

申请号：PCT/IB2010052542

申请日：2010-06-08

Applicant: NXP BV ,  NGUYEN HOANG VIET ,  BANCKEN PASCAL ,  SURDEANU RADU ,  LAMMERS MATHEUS JOHANNES GERADUS ,  DEURENBERG PETER HUBERTUS FRANCISCUS ,  BATAILLOU BENOIT ,  BOCCARDI GUILLAUME ,  VELLIANITIS GEORGIOS

Inventor： NGUYEN HOANG VIET ,  BANCKEN PASCAL ,  SURDEANU RADU ,  LAMMERS MATHEUS JOHANNES GERADUS ,  DEURENBERG PETER HUBERTUS FRANCISCUS ,  BATAILLOU BENOIT ,  BOCCARDI GUILLAUME ,  VELLIANITIS GEORGIOS

IPC: H05B33/08

CPC classification number: H05B33/0818 ,  G09G3/2003 ,  G09G3/3426 ,  G09G2320/041 ,  G09G2360/145 ,  H05B33/0827 ,  H05B33/0851 ,  H05B33/0866 ,  H05B33/0869

Abstract: In one embodiment, a control system is for controlling a lighting system which comprises a cluster (20) of different colour LEDs. The control system comprises a first control unit (24) for generating amplitude values for the different LEDs of the cluster to provide a desired colour point and a second control unit (38) for controlling pulse width values for the different LEDs to provide a desired brightness. Current sources (32) are provided for individually driving the LEDs of the cluster. This system allows the control of colour point to be independent from the control of brightness of the LED cluster. This provides a low cost solution and a fast, accurate and flexible control to a LED cluster.

Abstract translation: 在一个实施例中，控制系统用于控制包括不同颜色LED的群集（20）的照明系统。 所述控制系统包括用于产生所述簇的不同LED的振幅值以提供所需色点的第一控制单元（24）和用于控制所述不同LED的脉冲宽度值以提供期望亮度的第二控制单元（38） 。 提供电流源（32）用于单独驱动集群的LED。 该系统允许将色点的控制独立于LED簇的亮度控制。 这为LED集群提供了低成本的解决方案和快速，准确和灵活的控制。