High Linearity CMOS Ambient Light Sensor
    142.
    发明申请
    High Linearity CMOS Ambient Light Sensor 有权
    高线性CMOS环境光传感器

    公开(公告)号:US20080173796A1

    公开(公告)日:2008-07-24

    申请号:US11625767

    申请日:2007-01-22

    CPC classification number: G01J1/32 G01J1/02 G01J1/0295 G01J1/4204 G01J1/44

    Abstract: A light sensor having first and second photodetectors and a current mirror is disclosed. The first photodetector receives a light signal and generates a light current proportional to the light intensity received by the first photodetector and a dark current that is independent of the light intensity. The second photodetector is connected in series with the first photodetector at a first node. The second photodetector has a covering that prevents light from reaching the second photodetector. The second photodetector generates a current equal to the dark current. The first photodetector is connected to a power source and the second photodetector is connected to an output node. The current mirror is connected to the first node and the output node and generates an output current that is proportional to the light current through the output node when the output node is connected to an external circuit.

    Abstract translation: 公开了具有第一和第二光电检测器和电流镜的光传感器。 第一光电检测器接收光信号并产生与由第一光电检测器接收的光强度成比例的光电流和独立于光强度的暗电流。 第二光电检测器在第一节点处与第一光电检测器串联连接。 第二光电检测器具有防止光到达第二光电检测器的覆盖物。 第二光电探测器产生等于暗电流的电流。 第一光电检测器连接到电源,第二光电检测器连接到输出节点。 电流镜连接到第一节点和输出节点,并且当输出节点连接到外部电路时,产生与通过输出节点的光电流成比例的输出电流。

    Photoelectric converter
    143.
    发明申请
    Photoelectric converter 审中-公开
    光电转换器

    公开(公告)号:US20080088722A1

    公开(公告)日:2008-04-17

    申请号:US11907224

    申请日:2007-10-10

    Abstract: A photoelectric converter comprising a resin layer that absorbs infrared light cuts out unnecessary infrared light, while the photoelectric converter has a problem that the resin layer also reduces the transmission of light in the visible range. A photoelectric converter improving the problem comprises a semiconductor substrate (2) on which photoelectric conversion elements are formed, a color filter (8) provided on the semiconductor substrate (2), and a support base (21) bonded to the color filter (8), wherein an interference filter (11) comprised of multiple thin layers of dielectric material laminated together and reflecting infrared light is provided to the support base (21). As a result, light attenuation can be minimized while infrared light is cut, and the usage efficiency of light can be increased. A photoelectric converter adjusted to the luminous efficiency of the human eye can be obtained by adjusting the light transmittance characteristics of the color filter (8) to the luminous efficiency of the human eye.

    Abstract translation: 包括吸收红外光的树脂层的光电转换器切断不必要的红外光,而光电转换器具有树脂层也可以减少可见光范围内的透光性的问题。 改善该问题的光电转换器包括形成有光电转换元件的半导体基板(2),设置在半导体基板(2)上的滤色器(8)和与滤色器(8)接合的支撑基座 ),其中由支撑基座(21)提供层叠在一起并反射红外光的多个介电材料薄层组成的干涉滤光器(11)。 结果,可以在红外光被切断时减少光衰,并且可以提高光的使用效率。 通过将滤色器(8)的透光率特性调节到人眼的发光效率,可以获得调整到人眼的发光效率的光电转换器。

    Method for stabilizing the temperature dependency of light emission of an LED
    144.
    发明授权
    Method for stabilizing the temperature dependency of light emission of an LED 有权
    稳定LED发光温度依赖性的方法

    公开(公告)号:US07339173B2

    公开(公告)日:2008-03-04

    申请号:US11128119

    申请日:2005-05-10

    Abstract: Method for correction of the temperature dependency of a light quantity L emitted by a light emitting diode (LED), being operated in pulsed mode with substantially constant pulse duration tP, and measured in a light detector, using a predetermined parameter X, correlated to the temperature T of the LED in a predetermined ratio, whereby a correction factor K is determined from the parameter X, preferably using a calibration table, especially preferred using an analytic predetermined function, whereby the measured emitted light quantity L is corrected for the temperature contingent fluctuations of the emitted light quantity, whereby the parameter X is determined from at least two output signals of the LED, which are related to each other in a predetermined manner.

    Abstract translation: 用于校正由发光二极管(LED)发射的光量L的温度依赖性的方法,其以脉冲模式以基本上恒定的脉冲持续时间t P P运行,并且在光检测器中测量,使用 预定参数X,以预定比例与LED的温度T相关,由此,优选使用校准表,从参数X确定校正因子K,特别优选使用分析预定功能,由此测量的发射光量 根据发射光量的温度偶然波动来校正L,由此根据预定方式彼此相关的LED的至少两个输出信号来确定参数X.

    Stray charged particle removal device
    145.
    发明申请
    Stray charged particle removal device 有权
    杂散带电粒子去除装置

    公开(公告)号:US20070262234A1

    公开(公告)日:2007-11-15

    申请号:US11418127

    申请日:2006-05-05

    Abstract: In order to reduce the exposure of a detector surface 180 of a photo-multiplier 160 to stray charged particles, an off-axis structure is interposed between the resonant structure and the detector surface of the photo-multiplier. By providing the off-axis structure with at least one reflective surface, photons are reflected toward the detector surface of the photo-multiplier while at the same time absorbing stray charged particles. Stray particles may be absorbed by the reflective surface or by any other part of the off-axis structure. The off-axis structure may additionally be provided with an electrical bias and/or an absorbing coating for absorbing stray charged particles.

    Abstract translation: 为了减少光电倍增器160的检测器表面180暴露于杂散带电粒子,在谐振结构和光电倍增器的检测器表面之间插入偏轴结构。 通过向离轴结构提供至少一个反射表面,光子被朝向光电倍增管的检测器表面反射,同时吸收杂散带电粒子。 杂散颗粒可以被反射表面或离轴结构的任何其它部分吸收。 离轴结构还可以设置有用于吸收杂散带电粒子的电偏压和/或吸收涂层。

Patent Agency Ranking