公开(公告)号：US06392215B1

公开(公告)日：2002-05-21

申请号：US09399498

申请日：1999-09-20

Applicant: Steven John Baumgartner ,  Daniel Scott Hedin ,  David Warren Siljenberg

Inventor： Steven John Baumgartner ,  Daniel Scott Hedin ,  David Warren Siljenberg

IPC: G01J132

CPC classification number: H01S5/042 ,  H01S5/0683

Abstract: An improved laser diode driving circuit is disclosed which includes a current source, an operational amplifier, a light sensing device, a current mirror, and a constant current source. The current source is coupled to the laser diode for biasing the laser diode. The operational amplifier has an output coupled to the current source for driving the current source. The operational amplifier includes a first and a second input. The first input is coupled to a reference voltage. The second input receives a feedback signal. The light sensing device is coupled to a first supply voltage for detecting a portion of an optical power output from the laser. The light sensing device generates a monitor current proportional to the detected optical power output. The current mirror is coupled to the light sensing device and the second input of the operational amplifier. The current mirror receives the monitor current and generates a mirror current which is substantially equal to the monitor current. The constant current source is coupled to the second input of the operational amplifier for outputting a reference current. The reference current and the mirror current are then utilized to generate the feedback signal.

Abstract translation: 公开了一种改进的激光二极管驱动电路，其包括电流源，运算放大器，光感测装置，电流镜和恒流源。 电流源耦合到激光二极管以偏置激光二极管。 运算放大器具有耦合到电流源的输出，用于驱动电流源。 运算放大器包括第一和第二输入。 第一输入耦合到参考电压。 第二输入接收反馈信号。 光感测装置耦合到用于检测从激光器输出的光功率的一部分的第一电源电压。 光感测装置产生与检测到的光功率输出成正比的监视电流。 电流镜耦合到光感测装置和运算放大器的第二输入端。 电流镜接收监视电流并产生基本上等于监视电流的反射镜电流。 恒流源耦合到运算放大器的第二输入端，用于输出参考电流。 然后利用参考电流和反射镜电流来产生反馈信号。

公开(公告)号：US06392214B1

公开(公告)日：2002-05-21

申请号：US09310333

申请日：1999-05-12

Applicant: Yasuhiro Okamoto

Inventor： Yasuhiro Okamoto

IPC: G01J132

CPC classification number: H03K17/941 ,  G01D5/268 ,  G01V8/16

Abstract: A photoelectric switch which has a light source made up of elements 1a, 1b, and 1c for emitting light, a projection lens 3, a first optical fiber 6a for guiding the light emitted from the light source and penetrating the projection lens into a detection position 7, a detection light reception element 2a, a second optical fiber 6b for guiding the light reflected from the detection position 7 or the light penetrating the detection position 7 into the detection light reception element 2a, and a monitor light reception element 2b disposed at a position for receiving light between the projection lens 3 and the incident end part of the first optical fiber 6a. According to the present invention, it is possible to provide a photoelectric switch capable of precisely monitoring the light transmission quantity if the transmissivity or reflectivity of an optical system changes.

Abstract translation: 具有由用于发光的元件1a，1b和1c组成的光源的光电开关，投影透镜3，用于引导从光源发射的光并将投影透镜穿透到检测位置的第一光纤6a 如图7所示，检测光接收元件2a，用于将从检测位置7反射的光或穿过检测位置7的光引导到检测光接收元件2a中的第二光纤6b，以及设置在检测光接收元件2a上的监视光接收元件2b。 用于在投影透镜3和第一光纤6a的入射端部之间接收光的位置。 根据本发明，如果光学系统的透射率或反射率改变，则可以提供能够精确地监视光透射量的光电开关。

公开(公告)号：US06350978B1

公开(公告)日：2002-02-26

申请号：US09505626

申请日：2000-02-16

Applicant: Toshio Kasai

Inventor： Toshio Kasai

IPC: G01J132

CPC classification number: G01R31/2635 ,  G01J1/32 ,  H05B33/0893

Abstract: A deterioration sensing device comprises a laser diode (LD), a voltage-current converter supplying electric current to the LD to radiate a laser beam which is received by a photo-diode, and an APC circuit outputting electric voltage in accordance with the intensity of the laser beam sensed by the photo-diode. The voltage-current converter is controlled based on the electric voltage so that the intensity of the laser beam is kept constant. An LD deterioration circuit is provided with a comparator, in which the electric voltage is compared with a reference voltage. An LD deterioration control unit is provided in the LD deterioration circuit to output a deterioration signal when the electric voltage becomes higher than the reference voltage, so that an alarm, indicating that the LD has deteriorated, is output, and the electric current supplied to the LD is decreased.

Abstract translation: 劣化感测装置包括：激光二极管（LD），向LD提供电流的电流 - 电流转换器，以辐射由光电二极管接收的激光束;以及APC电路，其输出电压根据 由光电二极管感测的激光束。 基于电压控制电压 - 电流转换器，使得激光束的强度保持恒定。 LD劣化电路设置有比较器，其中将电压与参考电压进行比较。 LD劣化控制单元设置在LD劣化电路中，以在电压变得高于参考电压时输出劣化信号，从而输出指示LD劣化的报警，并且提供给 LD降低。

公开(公告)号：US06831261B2

公开(公告)日：2004-12-14

申请号：US10427146

申请日：2003-04-30

Applicant: Kenneth Schofield ,  Mark L. Larson ,  Keith J. Vadas

Inventor： Kenneth Schofield ,  Mark L. Larson ,  Keith J. Vadas

IPC: G01J132

CPC classification number: B60N2/002 ,  B60Q1/085 ,  B60Q1/14 ,  B60Q1/1423 ,  B60Q1/18 ,  B60Q9/008 ,  B60Q2300/054 ,  B60Q2300/056 ,  B60Q2300/112 ,  B60Q2300/122 ,  B60Q2300/21 ,  B60Q2300/312 ,  B60Q2300/314 ,  B60Q2300/332 ,  B60Q2300/3321 ,  B60Q2300/41 ,  B60Q2300/42 ,  B60R1/088 ,  B60R1/12 ,  B60R11/04 ,  B60R21/01538 ,  B60R2001/1223 ,  B60R2001/1253 ,  B60S1/0822 ,  B60S1/0844 ,  B60S1/0885 ,  G06K9/00825 ,  G06K9/2018 ,  G06K9/2027 ,  H04N7/181

Abstract: A headlamp control system for a vehicle includes an imaging array sensor, which has a field of view forward of the vehicle, and a control that processes images captured by the imagine array sensor. The control is operable to detect light sources in the field of view and to determine an activity level in the field of view in response to a quantity of light sources detected. The control is operable to control a headlamp of the vehicle in response to identification of at least one of a headlamp of another vehicle and a taillight of another vehicle and in response to the activity level. The control may be operable to process the captured images to detect lane markers or precipitation in the field of view and may control a steering system of the vehicle or a wiper motor of the vehicle in response to such image processing.

Abstract translation: 用于车辆的前照灯控制系统包括具有车辆前方的视野的成像阵列传感器和处理由成像阵列传感器捕获的图像的控制。 该控制可操作以在视野中检测光源并且响应于检测到的光源的量来确定视野中的活动水平。 该控制可操作以响应于对另一车辆的前照灯和另一车辆的尾灯中的至少一个的识别以及响应于活动水平来控制车辆的前照灯。 该控制可操作用于处理所捕获的图像以在视场中检测车道标记或降水，并可响应于这种图像处理来控制车辆的转向系统或车辆的刮水器马达。

公开(公告)号：US06787748B2

公开(公告)日：2004-09-07

申请号：US10730127

申请日：2003-12-09

Applicant: Haruyuki Suzuki

Inventor： Haruyuki Suzuki

IPC: G01J132

CPC classification number: G11B7/1263 ,  G01J1/32

Abstract: A light intensity control apparatus for use in an information recording and reading system includes a light source driving device for driving a light source so as to generate a light having the first and higher second light intensity levels. A light intensity detection device is provided and includes a first light intensity detection member for detecting a prescribed intensity level of the light when a light modulation speed is relatively low, and a second light intensity detection member for detecting an average of the intensity of the light when it is relatively high. A detection member selection device is provided so as to select one of the first and second light intensity detection members depending upon a selection instruction so as to use one of the detection outputs. A reference level selection device is provided so as to select one of the first and the second reference levels to be compared with the one of the detection results depending upon the selection instruction. A comparison device may be provided so as to compare the one of detection results with a corresponding one of reference levels. A driving current adjustment device is provided in order to adjust the magnitude of a driving current that drives the light source in accordance with the comparison result.

公开(公告)号：US06720544B2

公开(公告)日：2004-04-13

申请号：US10121921

申请日：2002-04-11

Applicant: Sandor L. Barna ,  Scott Patrick Campbell

Inventor： Sandor L. Barna ,  Scott Patrick Campbell

IPC: G01J132

CPC classification number: G01J1/32

Abstract: A digitally controlled light source system. The light source produces an output which is sensed by a photoreceptor within the feedback loop of an operational amplifier. This maintains the output of the light source constant. The feedback loop can also have a digital control system, to enable digital control of the output.

Abstract translation: 数字控制光源系统。 光源产生由运算放大器的反馈回路内的感光体感测的输出。 这保持光源的输出恒定。 反馈回路还可以具有数字控制系统，以实现对输出的数字控制。

公开(公告)号：US06713744B1

公开(公告)日：2004-03-30

申请号：US09695323

申请日：2000-10-25

Applicant: Shinya Kubo ,  Tetsuichiro Yamamoto

Inventor： Shinya Kubo ,  Tetsuichiro Yamamoto

IPC: G01J132

CPC classification number: H04N1/40056 ,  H05B41/39

Abstract: The scanner includes the switch 10 that is closed when a document is read, the boosted-voltage conversion circuit 12 that boosts a DC voltage of 12 volts (V) supplied from a power source (not shown) and then converts it into a high-frequency signal b of 50 KHz, the temperature detection circuit 20 formed of the thermistor 15 for ambient temperature detection and correction circuit 16, and the dimmer control circuit 13 that varies the high-frequency signal b from the boosted-voltage conversion circuit 12 according to a temperature detected by the thermistor 15 and produces a drive signal c to vary the luminance of the cold-cathode-tube light source 2.

Abstract translation: 扫描器包括当读取文件时关闭的开关10，升压电压转换电路12，其升压从电源（未示出）提供的12伏特（V）的直流电压，然后将其转换为高电平， 频率信号b为50KHz，由用于环境温度检测和校正电路16的热敏电阻15形成的温度检测电路20和根据升压电压转换电路12改变高频信号b的调光控制电路13 由热敏电阻15检测到的温度，并产生驱动信号c以改变冷阴极管光源2的亮度。

公开(公告)号：US06686578B2

公开(公告)日：2004-02-03

申请号：US09896652

申请日：2001-06-29

Applicant: Kiyohisa Fujita

Inventor： Kiyohisa Fujita

IPC: G01J132

CPC classification number: G01M11/00

Abstract: Optical wavelength sensitivities in an optical meter used for a sweep synchronization measurement are corrected by a method comprising the steps of measuring a plurality of reference values when no device under test is connected to the optical meter, computing a series of corrective values for the reference values for a plurality of selected reference wavelengths, respectively, such that the reference value at one of the selected reference wavelengths is zero, correcting a plurality of actual measured values using the series of corrective values when an device under test is connected to the optical meter, and displaying the actual measured values corrected.

Abstract translation: 用于扫描同步测量的光学仪表中的光学波长灵敏度通过以下方法来校正，所述方法包括以下步骤：当没有被测设备连接到光学仪表时测量多个参考值，计算参考值的一系列校正值 对于多个选择的参考波长，使得所选参考波长中的一个参考波长处的参考值为零，当被测设备连接到光学仪表时，使用一系列校正值校正多个实际测量值， 并显示校正的实际测量值。

公开(公告)号：US06683292B1

公开(公告)日：2004-01-27

申请号：US10267880

申请日：2002-10-10

Applicant: Sheng-Kao Charng

Inventor： Sheng-Kao Charng

IPC: G01J132

CPC classification number: B60Q1/2684 ,  B60S1/0491

Abstract: A windshield wiper spoiler display structure comprised of a control circuit containing multiple LEDs to improve appearance and safety display of the wiper; LEDs being connected to a photo-sensor and a vibration switch via the control circuit; the control circuit in a see-through hood and a casing being mounted to the spoiler; LEDs being turned on to display the operation of the wiper during night hours or at where the light is darker as detected by the photo-sensor and the vibration switch.

Abstract translation: 一种挡风玻璃刮水器扰流板显示结构，包括包含多个LED的控制电路，以改善擦拭器的外观和安全显示; LED通过控制电路连接到光传感器和振动开关; 透明罩中的控制电路和安装在扰流器上的壳体; LED被打开以在夜间显示雨刮器的操作，或者在由光传感器和振动开关检测到的光线较暗的地方。

公开(公告)号：US06674060B2

公开(公告)日：2004-01-06

申请号：US09985729

申请日：2001-11-06

Applicant: Mika Antila

Inventor： Mika Antila

IPC: G01J132

CPC classification number: G09G3/3413 ,  G09G2320/0626 ,  G09G2320/0633 ,  G09G2320/064 ,  G09G2320/0666 ,  G09G2360/144 ,  G09G2360/145 ,  H04N9/73 ,  H04N17/02 ,  H04N17/04 ,  H05B33/086 ,  H05B33/0869

Abstract: A method and apparatus for illuminating an object with white light, in which method the object is illuminated using lights of at least two different colors. The intensities of the lights are measured and then the intensity of illumination provided by means of a light of a single color is adjusted on the basis of the measured intensities of illumination provided by means of at least two different colors to improve the white balance of the object's illumination.

Abstract translation: 一种用白光照射物体的方法和装置，其中使用至少两种不同颜色的光来照亮物体。 测量光的强度，然后基于通过至少两种不同颜色提供的照度的测量强度来调整借助于单色光提供的照明强度，以改善光的白平衡 物体照明。