公开(公告)号：US08111388B2

公开(公告)日：2012-02-07

申请号：US12850068

申请日：2010-08-04

Applicant: Christopher M. Glandt ,  Jay M. Eissner ,  Mark J. Hastings

Inventor： Christopher M. Glandt ,  Jay M. Eissner ,  Mark J. Hastings

IPC: G01J1/42 ,  F21V23/04 ,  H05B37/02

CPC classification number: G01J1/18 ,  G01J2001/4252

Abstract: A LED light fixture and a luminous flux monitoring system for a light fixture. The light fixture includes a housing defining an interior space including an interior surface and a transmissive panel. A light source is coupled to the interior surface. The system includes a light sensor coupled to the interior surface and aligned to receive light from the transmissive panel, light source, and/or interior surface. The light sensor is configured to measure luminous flux in the interior space. A controller is coupled to the light source and the light sensor. The controller is configured to determine if a light sensor measurement of luminous flux in the interior space is more or less than a reference value of the luminous flux. If the measurement of luminous flux is less than the reference value, the controller is configured to activate an end-of-life indicator. The reference value equals (total flux−internal ambient flux)×depreciation factor.

Abstract translation: LED灯具和灯具光通量监控系统。 灯具包括限定包括内表面和透射面板的内部空间的壳体。 光源耦合到内表面。 该系统包括耦合到内表面并对准以接收来自透射面板，光源和/或内表面的光的光传感器。 光传感器被配置为测量内部空间中的光通量。 控制器耦合到光源和光传感器。 控制器被配置为确定内部空间中的光通量的光传感器测量值是否大于或等于光通量的参考值。 如果光通量的测量小于参考值，则控制器被配置为激活寿命终止指示器。 参考值等于（总通量 - 内部环境通量）×折旧系数。

公开(公告)号：US20110114825A1

公开(公告)日：2011-05-19

申请号：US12906839

申请日：2010-10-18

Applicant: Shinichi OTSUKA ,  Yuichiro NAKATA ,  Junji FUJINO

Inventor： Shinichi OTSUKA ,  Yuichiro NAKATA ,  Junji FUJINO

IPC: G01J1/44

CPC classification number: H05B41/3922 ,  G01J1/18 ,  G01J1/4204 ,  G01J1/44 ,  H03F3/08

Abstract: In an ambient light sensor according to the present invention, a current amplification portion which amplifies a light current obtained by a light receiving portion to generate an output signal includes: a current amplification stage that has: a first current mirror amplifier which is composed of a bipolar transistor, and a second current mirror amplifier which is composed of a field effect transistor connected in parallel with the first current mirror amplifier; and a changeover control circuit which monitors an amplified current input into the current amplification stage, and performs changeover control of the first and second current mirror amplifiers according to a value of the amplified current.

Abstract translation: 在根据本发明的环境光传感器中，放大由光接收部分获得的光电流以产生输出信号的电流放大部分包括：电流放大级，具有：第一电流镜放大器，其由 双极晶体管和第二电流镜放大器，其由与第一电流镜放大器并联连接的场效应晶体管组成; 以及切换控制电路，其监视输入到电流放大级的放大电流，并根据放大电流的值执行第一和第二电流镜放大器的切换控制。

公开(公告)号：US20110042554A1

公开(公告)日：2011-02-24

申请号：US12159879

申请日：2007-01-05

Applicant: Achim Hilgers ,  Bernd Ackermann

Inventor： Achim Hilgers ,  Bernd Ackermann

IPC: G01J1/44 ,  G01K13/00

CPC classification number: G01J1/08 ,  G01J1/18 ,  G01J1/44

Abstract: The invention relates to a light sensor, particularly for LED-based lamps. The light sensor comprises at least one photosensor (1) and a temperature sensor (2). The photosensor (1) and the temperature sensor (2) are integrated on a common substrate in a common housing.

Abstract translation: 本发明涉及一种光传感器，特别是用于基于LED的灯。 光传感器包括至少一个光电传感器（1）和温度传感器（2）。 光传感器（1）和温度传感器（2）被集成在公共壳体中的公共基板上。

公开(公告)号：US07759627B2

公开(公告)日：2010-07-20

申请号：US12075062

申请日：2008-03-06

Applicant: Takashi Kunimori ,  Yasushi Yamazaki ,  Masanori Yasumori

Inventor： Takashi Kunimori ,  Yasushi Yamazaki ,  Masanori Yasumori

IPC: H03F3/08

CPC classification number: G01J1/18 ,  G01J1/02 ,  G01J1/0219 ,  G01J1/4204 ,  G01J1/46 ,  G01J2001/444 ,  G02F2001/13312 ,  G09G3/3406 ,  G09G2330/06 ,  G09G2360/144

Abstract: A display device according to an embodiment of the invention includes a display panel, a drive circuit that drives the display panel, an illuminating unit that illuminates the display panel, a photosensing section Ls having an ambient light photosensor Ts that senses the brightness of ambient light and a capacitor Cw that is charged with a predetermined reference voltage via a first switch S1, an ambient light photosensor reading section Re1 that reads a value sensed by the photosensing section, and a controller that controls the illuminating unit according to an output of the ambient light photosensor reading section. The ambient light photosensor reading section is provided with a noise avoidance unit that avoids erroneous sensing in the photosensing section induced as a result of noise generated when the drive circuit operates. Thanks to such structure, a display device is provided in which sensing of ambient light is free from the effects of noise arising from the parasitic capacitance formed between the electrodes and wiring of the ambient light photosensor and the display panel.

Abstract translation: 根据本发明的实施例的显示装置包括显示面板，驱动显示面板的驱动电路，照亮显示面板的照明单元，具有感测环境光的亮度的环境光光电传感器Ts的感光部Ls 以及经由第一开关S1充电预定参考电压的电容器Cw，读取由感光部检测到的值的环境光光电传感器读取部Re1和根据环境的输出来控制照明单元的控制器 光电传感器阅读部分。 环境光光电传感器读取部分设置有避免由于驱动电路工作时产生的噪声而导致的感光部分中的错误感测的噪声回避单元。 由于这种结构，提供了一种显示装置，其中环境光的感测不受由电极之间形成的寄生电容和环境光光电传感器和显示面板的布线产生的噪声的影响。

公开(公告)号：US20100006745A1

公开(公告)日：2010-01-14

申请号：US12372843

申请日：2009-02-18

Applicant: Robert Baumann

Inventor： Robert Baumann

IPC: G01J1/42 ,  H05B41/36

CPC classification number: G01J1/46 ,  G01J1/18 ,  G01J1/4228 ,  G01V8/20

Abstract: A light grid includes pairs of transmitters and receiver units, and a programmable logic unit for signal evaluation. The analog part of the light grid includes only the reception elements and the storage capacitors for performing analog-to-digital conversion.

Abstract translation: 光栅包括发射器和接收器单元对，以及用于信号评估的可编程逻辑单元。 光栅的模拟部分仅包括用于进行模数转换的接收元件和存储电容器。

公开(公告)号：US20090296078A1

公开(公告)日：2009-12-03

申请号：US12473197

申请日：2009-05-27

Applicant: Yoshikazu MATSUI

Inventor： Yoshikazu MATSUI

IPC: G01J1/02

CPC classification number: G01J1/18 ,  G01J1/02 ,  G01J1/0219 ,  G01J1/0228 ,  G09G3/20 ,  G09G2360/144

Abstract: A light intensity detecting device is provided to detect a light intensity according to pulse duration of a pulse signal without being affected by noise, including: a time measuring unit for measuring an elapsed time period of the pulse signal that has been raised; a signal state discriminating unit for obtaining a state of the pulse signal; a sampling unit for directing the signal state discriminating unit to obtain the state at a sampling interval corresponding to the elapsed time period; and a falling detecting unit for detecting the pulse signal that has been fallen when a fallen state of the pulse signal is successively obtained for two times. When the fallen pulse signal is detected, the sampling unit directs the signal state discriminating unit to obtain the state of the pulse signal at a time point, which is output as the pulse duration of the pulse signal.

Abstract translation: 提供了一种光强检测装置，用于根据脉冲信号的脉冲持续时间来检测光强度而不受噪声影响，包括：时间测量单元，用于测量已经提高的脉冲信号的经过时间段; 信号状态判别单元，用于获得脉冲信号的状态; 采样单元，用于指示所述信号状态判别单元以与所述经过时间段对应的采样间隔获得所述状态; 以及下降检测单元，用于当连续获得脉冲信号的下降状态两次时，检测已经下降的脉冲信号。 当检测到下降的脉冲信号时，采样单元引导信号状态判别单元获取作为脉冲信号的脉冲持续时间输出的时间点的脉冲信号的状态。

公开(公告)号：US20080224027A1

公开(公告)日：2008-09-18

申请号：US12075062

申请日：2008-03-06

Applicant: Takashi Kunimori ,  Yasushi Yamazaki ,  Masanori Yasumori

Inventor： Takashi Kunimori ,  Yasushi Yamazaki ,  Masanori Yasumori

IPC: G01J1/32

CPC classification number: G01J1/18 ,  G01J1/02 ,  G01J1/0219 ,  G01J1/4204 ,  G01J1/46 ,  G01J2001/444 ,  G02F2001/13312 ,  G09G3/3406 ,  G09G2330/06 ,  G09G2360/144

Abstract: A display device according to an embodiment of the invention includes a display panel, a drive circuit that drives the display panel, an illuminating unit that illuminates the display panel, a photosensing section Ls having an ambient light photosensor Ts that senses the brightness of ambient light and a capacitor Cw that is charged with a predetermined reference voltage via a first switch S1, an ambient light photosensor reading section Re1 that reads a value sensed by the photosensing section, and a controller that controls the illuminating unit according to an output of the ambient light photosensor reading section. The ambient light photosensor reading section is provided with a noise avoidance unit that avoids erroneous sensing in the photosensing section induced as a result of noise generated when the drive circuit operates. Thanks to such structure, a display device is provided in which sensing of ambient light is free from the effects of noise arising from the parasitic capacitance formed between the electrodes and wiring of the ambient light photosensor and the display panel.

Abstract translation: 根据本发明的实施例的显示装置包括显示面板，驱动显示面板的驱动电路，照亮显示面板的照明单元，具有感测环境光的亮度的环境光光电传感器Ts的感光部Ls 以及经由第一开关S1充电预定参考电压的电容器Cw，读取由感光部分检测到的值的环境光光电传感器读取部分Re 1，以及根据输出的控制器控制照明单元的控制器 环境光光电传感器阅读部分。 环境光光电传感器读取部分设置有避免由于驱动电路工作时产生的噪声而导致的感光部分中的错误感测的噪声回避单元。 由于这种结构，提供了一种显示装置，其中环境光的感测不受由电极之间形成的寄生电容和环境光光电传感器和显示面板的布线产生的噪声的影响。

公开(公告)号：US20080197267A1

公开(公告)日：2008-08-21

申请号：US11596072

申请日：2005-05-02

Applicant: Seiichiro Mizuno ,  Yasuhiro Suzuki

Inventor： Seiichiro Mizuno ,  Yasuhiro Suzuki

IPC: H01L31/10 ,  G01J1/46 ,  G01J1/44 ,  H03M1/12 ,  H04N5/335

CPC classification number: H01L27/14601 ,  G01J1/18 ,  G01J1/46 ,  H04N5/235 ,  H04N5/355 ,  H04N5/3575 ,  H04N5/374 ,  H04N5/378

Abstract: The present invention relates to a photodetector having a structure capable of increasing the dynamic range and of improving the S/N ratio for light detection. The photodetector includes a pixel including a photodiode, an integrating circuit, a CDS circuit, a selecting circuit, and a switching circuit. Charges generated by the photodiode are accumulated in an integral capacitor unit in the integrating circuit, and a first voltage value V1 corresponding to the amount of accumulated charge is outputted from the integrating circuit. The CDS circuit receives the first voltage value and outputs a second voltage value V2 corresponding to the variation of the first voltage value with reference to that at a reference time. The switching circuit compares the amount of charge generated by the photodiode with a threshold value therefor, and, based on the result of the comparison, instructs the integrating circuit to set the capacitance of the integral capacitor unit and instructs the selecting circuit to select one of the first and second voltages as an output voltage value.

Abstract translation: 本发明涉及具有能够增加动态范围和提高光检测的S / N比的结构的光电检测器。 光检测器包括具有光电二极管，积分电路，CDS电路，选择电路和开关电路的像素。 光电二极管产生的电荷积分在积分电路的积分电容器单元中，与积分电荷量对应的第一电压值V 1> 1从积分电路输出。 CDS电路接收第一电压值并输出与参考时间相对应的第一电压值的变化相对应的第二电压值V SUB2 。 开关电路将由光电二极管产生的电荷量与其阈值进行比较，并且基于比较结果，指示积分电路设置积分电容器单元的电容，并指示选择电路选择 第一和第二电压作为输出电压值。

公开(公告)号：US20080179497A1

公开(公告)日：2008-07-31

申请号：US11669360

申请日：2007-01-31

Applicant: Selvan Maniam ,  Kean Loo Keh ,  Farn Hin Chen

Inventor： Selvan Maniam ,  Kean Loo Keh ,  Farn Hin Chen

IPC: H05B37/02 ,  H05B39/04 ,  G01J1/44

CPC classification number: G01J3/46 ,  G01J1/18 ,  G01J1/32 ,  G01J1/4204 ,  G01J3/465 ,  G01J3/51 ,  G01J3/513 ,  H05B33/0872 ,  H05B37/0218 ,  Y02B20/46

Abstract: An ambient light sensor (ALS) system is described. The ALS system includes a polychromatic color sensor, an analog-to-digital converter (ADC), and a digital processor. The polychromatic color sensor generates a plurality of analog signals from a corresponding plurality of color channels based on a detected ambient light signal. The ADC is coupled to the polychromatic color sensor. The ADC converts the plurality of analog signals to a plurality of digital signals. The digital processor is coupled to the ADC. The digital processor generates a processed light signal. The processed light signal describes a characteristic of the detected ambient light signal. Embodiments of the ALS system provide a more comprehensive characterization of the ambient light, and facilitate control of a device based on the characterization of the ambient light.

Abstract translation: 描述了环境光传感器（ALS）系统。 ALS系统包括多色彩色传感器，模数转换器（ADC）和数字处理器。 多色彩色传感器基于检测到的环境光信号从相应的多个颜色通道生成多个模拟信号。 ADC耦合到多色彩色传感器。 ADC将多个模拟信号转换成多个数字信号。 数字处理器耦合到ADC。 数字处理器产生经处理的光信号。 经处理的光信号描述检测到的环境光信号的特性。 ALS系统的实施例提供了对环境光的更全面的表征，并且基于环境光的表征便于对设备的控制。

公开(公告)号：US20080135727A1

公开(公告)日：2008-06-12

申请号：US11598208

申请日：2006-11-09

Applicant: W. Daniel Hillis ,  Roderick A. Hyde ,  Nathan P. Myhrvold ,  Lowell L. Wood

Inventor： W. Daniel Hillis ,  Roderick A. Hyde ,  Nathan P. Myhrvold ,  Lowell L. Wood

IPC: H01L27/00

CPC classification number: G01J1/04 ,  G01J1/0418 ,  G01J1/0488 ,  G01J1/18 ,  G01J1/4228 ,  G01J3/36 ,  H03M1/125 ,  H03M1/44 ,  H04N5/2355 ,  H04N5/35545 ,  H04N5/37213 ,  H04N5/37455 ,  H04N9/045 ,  H04N2101/00

Abstract: Method and systems related to obstructing a first predefined portion of at least one defined wavelength of light incident upon a first photo-detector array; and detecting the at least one defined wavelength of light with a photo-detector in a second photo-detector array.