Method of controlling an LED, and an LED controller
    1.
    发明授权
    Method of controlling an LED, and an LED controller 有权
    控制LED的方法和LED控制器

    公开(公告)号:US08723443B2

    公开(公告)日:2014-05-13

    申请号:US13257266

    申请日:2010-02-25

    IPC分类号: H05B33/00

    摘要: 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 while 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 utilize 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.

    摘要翻译: 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。

    METHOD OF CONTROLLING AN LED, AND AN LED CONTROLLER
    2.
    发明申请
    METHOD OF CONTROLLING AN LED, AND AN LED CONTROLLER 有权
    控制LED的方法和LED控制器

    公开(公告)号:US20120001570A1

    公开(公告)日:2012-01-05

    申请号:US13257266

    申请日:2010-02-25

    IPC分类号: H05B37/02

    摘要: 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.

    摘要翻译: 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。

    Display Device
    7.
    发明申请
    Display Device 有权
    显示设备

    公开(公告)号:US20120105311A1

    公开(公告)日:2012-05-03

    申请号:US13056116

    申请日:2009-07-27

    IPC分类号: G09G3/00

    摘要: A display device comprises a substrate which carries an array of pixels. Each pixel comprises an array of apertures in the substrate, each aperture of the array having a maximum opening dimension less than the wavelength of the light to be transmitted through the aperture. The effective dielectric constant of the aperture and/or the dielectric constant of the substrate is varied, thereby to vary the light transmission characteristics of the pixel between transmission of at least one frequency in the visible spectrum and transmission of substantially no frequency in the visible spectrum.

    摘要翻译: 显示装置包括承载像素阵列的基板。 每个像素包括衬底中的孔阵列,阵列的每个孔具有小于要透过孔的光的波长的最大开口尺寸。 孔的有效介电常数和/或介质的介电常数发生变化,从而改变可见光谱中的至少一个频率的透射之间像素的透光特性以及可见光谱中基本上没有频率的透射 。

    Display device
    9.
    发明授权
    Display device 有权
    显示设备

    公开(公告)号:US09081251B2

    公开(公告)日:2015-07-14

    申请号:US13056116

    申请日:2009-07-27

    IPC分类号: G02F1/19 G02F1/23

    摘要: A display device comprises a substrate which carries an array of pixels. Each pixel comprises an array of apertures in the substrate, each aperture of the array having a maximum opening dimension less than the wavelength of the light to be transmitted through the aperture. The effective dielectric constant of the aperture and/or the dielectric constant of the substrate is varied, thereby to vary the light transmission characteristics of the pixel between transmission of at least one frequency in the visible spectrum and transmission of substantially no frequency in the visible spectrum.

    摘要翻译: 显示装置包括承载像素阵列的基板。 每个像素包括衬底中的孔阵列,阵列的每个孔具有小于要透过孔的光的波长的最大开口尺寸。 孔的有效介电常数和/或介质的介电常数发生变化,从而改变可见光谱中的至少一个频率的透射之间像素的透光特性以及可见光谱中基本上没有频率的透射 。

    Measuring apparatus
    10.
    发明授权
    Measuring apparatus 有权
    测量装置

    公开(公告)号:US08368877B2

    公开(公告)日:2013-02-05

    申请号:US13002017

    申请日:2009-07-01

    IPC分类号: G01N33/48 G01N21/01

    摘要: An apparatus comprising at least one measuring cell (10) is disclosed. The measuring cell comprises a first cavity (16 and a second cavity (18) perpendicular to the first cavity, the first cavity and the second cavity comprising an overlap at first respective ends and a reflective surface (20) at the opposite respective ends. A beam splitter (15) is located in the overlap and an electromagnetic radiation source (12) is arranged to project a beam of electromagnetic radiation onto the beam splitter (15) such that the beam is projected into each of the cavities. A phase detector (22) for detecting a phase difference between the respective electromagnetic radiation reflected by the first and second cavity (16; 18) is also provided. In addition, the apparatus has a fluid channel (26), at least a part of which runs parallel to the first cavity (16) such that the electromagnetic radiation projected into the first cavity extends into said part of the fluid channel. This allows for the interferometric detection of particles in the fluid channel.

    摘要翻译: 公开了一种包括至少一个测量单元(10)的装置。 所述测量单元包括第一空腔(16和垂直于所述第一空腔的第二空腔),所述第一空腔和所述第二空腔包括在第一相应端部处的重叠部分和在相对的相应端部处的反射表面(20) 分束器(15)位于重叠中,并且电磁辐射源(12)被布置成将电磁辐射束投射到分束器(15)上,使得射束投射到每个空腔中。相位检测器 还提供了用于检测由第一和第二空腔(16; 18)反射的各个电磁辐射之间的相位差的装置(22),另外,该装置具有流体通道(26),其流体通道的至少一部分平行于 所述第一空腔(16)使得投射到所述第一空腔中的电磁辐射延伸到所述流体通道的所述部分中,这允许对所述流体通道中的颗粒进行干涉检测。