专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20170341413A1 DRIVE APPARATUS THAT DRIVES LIGHT EMITTING DEVICE 审中-公开
公开(公告)号：US20170341413A1
公开(公告)日：2017-11-30
申请号：US15598828
申请日：2017-05-18
申请人： CANON KABUSHIKI KAISHA
发明人： Wataru Endo , Hirotaka Shiomichi
IPC分类号： B41J2/47 , H05B37/02 , B41J2/447
CPC分类号： B41J2/47 , B41J2/447 , H01S5/042 , H01S5/06209 , H01S5/06233 , H01S5/06808 , H01S5/06812 , H01S5/0683 , H05B37/0227 , H05B37/0272
摘要： A drive apparatus includes a light emitting device, a light receiving device configured to receive light emitted by the light emitting device, a comparison circuit configured to compare a light quantity of light detected by the light receiving device with a target value indicating a light quantity of light to be emitted by the light emitting device and generate a control signal corresponding to a comparison result, and a drive circuit configured to supply a drive signal corresponding to the control signal to the light emitting device. The drive circuit includes a gain changing switch configured to change, in accordance with the target value, a gain of the drive circuit.

2. 发明申请

US20170187165A1 DIODE CONTROL DEVICE 有权
公开(公告)号：US20170187165A1
公开(公告)日：2017-06-29
申请号：US15083921
申请日：2016-03-29
申请人： STMicroelectronics (Alps) SAS
发明人： Patrik Arno
IPC分类号： H01S5/062 , H05B33/08
CPC分类号： H01S5/042 , H01S5/0261 , H01S5/06223 , H01S5/06808 , H01S5/06812 , H05B33/0815
摘要： A diode control device include a first terminal for receiving a first power supply voltage and a second terminal for receiving a second power supply voltage. A circuit of the diode control device applies a regulated voltage on the anode of the diode in response to a control voltage. The control voltage is equal to a preset voltage when a reference voltage is less than or equal to zero. Conversely, when the reference voltage is greater than zero, the control voltage is equal to the sum of the present voltage and a difference between cathode voltage of the diode and the reference voltage.

3. 发明授权

US08605764B1 Laser diode junction temperature compensation 有权
标题翻译：激光二极管结温补偿
公开(公告)号：US08605764B1
公开(公告)日：2013-12-10
申请号：US13544556
申请日：2012-07-09
申请人： Bruce C. Rothaar , Dale Eugene Zimmerman , Joel Sandgathe
发明人： Bruce C. Rothaar , Dale Eugene Zimmerman , Joel Sandgathe
IPC分类号： H01S3/00
CPC分类号： G03B21/2033 , G02B26/10 , G02B27/01 , G03B21/2053 , H01S5/0014 , H01S5/0021 , H01S5/0427 , H01S5/0617 , H01S5/06213 , H01S5/06804 , H01S5/06812 , H01S5/4093 , H04N9/3129 , H04N9/3194
摘要： A projection apparatus includes at least one laser diode and a laser diode junction temperature estimator to estimate the junction temperature of the at least one laser diode. Laser diode current drive values are modified in response to the estimated laser junction temperature. The modification of laser diode current drive values may occur as frequently as once per pixel.
摘要翻译：投影装置包括至少一个激光二极管和激光二极管结温度估计器，以估计至少一个激光二极管的结温。激光二极管电流驱动值根据估计的激光器结温度进行修改。激光二极管电流驱动值的修改可能像每个像素一样频繁出现。

4. 发明授权

US08530810B2 Laser scanning microscope having variable light intensity and control method for the same 有权
标题翻译：具有可变光强度的激光扫描显微镜及其控制方法
公开(公告)号：US08530810B2
公开(公告)日：2013-09-10
申请号：US12863261
申请日：2009-01-13
申请人： Dieter Huhse , Stefan Wilhelm , Hans Schlüter , Alexander Liebhold , Erhardt Hülβe , Uwe Patz
发明人： Dieter Huhse , Stefan Wilhelm , Hans Schlüter , Alexander Liebhold , Erhardt Hülβe , Uwe Patz
IPC分类号： G01J1/32
CPC分类号： H01S5/06835 , G02B21/0032 , G02B21/06 , H01S5/06812
摘要： A laser scanning microscope (LSM) having variable light intensity and a control method for the same. The light intensity of a laser beam in an LSM has been controlled to date with high accuracy, but also high costs by means of an acousto-optic component (AOM, AOTF). According to the invention, such a component for beam modulation is to be omitted, without reducing the exposure accuracy of the sample. In an LSM, a directly modulated laser diode (10) is used with an electric control (12) for direct modulation. Said laser diode (10) has a turn-on delay of the light intensity that is dependent on the amount of the control variable when subjected to an electric control variable. The control (12) is designed such that the fluctuation width (ΔΔtV) of the occurring turn-on delay (ΔtV) is smaller than 1 μs, particularly smaller than 0.5 μs. Thus highly exact modulation without an acousto-optic component is possible. A quick direct modulation is achieved particularly by the following steps: a) identifying that an intensity to be achieved or achieved with the laser diode (10) falls below a lower threshold value or is below the lower threshold value, b) de-energizing the laser diode (10), c) providing an electric intermediate current, d) identifying that the intensity to be achieved exceeds an upper threshold value, e) flowing the intermediate current through the laser diode (10), and f) setting the diode current according to the intensity to be achieved.
摘要翻译：具有可变光强度的激光扫描显微镜（LSM）及其控制方法。 LSM中的激光束的光强度已经以高精度被控制，而且还通过声光部件（AOM，AOTF）高成本地被控制。根据本发明，在不降低样品的曝光精度的情况下，省略这种用于光束调制的部件。在LSM中，使用直接调制的激光二极管（10）和电控（12）进行直接调制。所述激光二极管（10）具有当受到电控制变量时取决于控制变量量的光强度的导通延迟。控制（12）被设计成使得所发生的导通延迟（DeltatV）的波动宽度（DeltaDeltatV）小于1个，特别是小于0.5个。因此，没有声光分量的高精度调制是可能的。特别地通过以下步骤实现快速直接调制：a）识别用激光二极管（10）实现或实现的强度低于低阈值或低于较低阈值，b）断电激光二极管（10），c）提供电中间电流，d）识别要实现的强度超过上限阈值，e）使中间电流流过激光二极管（10），以及f）设置二极管电流根据要实现的强度。

5. 发明申请

US20130170019A1 CONTROL METHOD AND MEASURING METHOD OF SEMICONDUCTOR OPTICAL AMPLIFIER, AND SEMICONDUCTOR OPTICAL AMPLIFIER DEVICE 有权
标题翻译：半导体光放大器的控制方法和测量方法以及半导体光放大器器件
公开(公告)号：US20130170019A1
公开(公告)日：2013-07-04
申请号：US13724634
申请日：2012-12-21
申请人： SUMITOMO ELECTRIC DEVICE INNOVATIONS, INC.
发明人： Ryota Teranishi
IPC分类号： H01S5/068 , H01S5/0683
CPC分类号： H01S5/06812 , B82Y20/00 , H01S5/0085 , H01S5/02415 , H01S5/02438 , H01S5/0617 , H01S5/06804 , H01S5/0683 , H01S5/34306 , H01S5/4006 , H01S5/5063
摘要： A control method of a semiconductor optical amplifier includes: controlling a driving current of the semiconductor optical amplifier in a region where a light output intensity decreases in accordance with increasing of the driving current, a drive current in the region being higher than a drive current in a region where a light output intensity increases in accordance with increasing of the driving current.
摘要翻译：半导体光放大器的控制方法包括：根据驱动电流的增加控制光输出强度降低的区域中的半导体光放大器的驱动电流，该区域中的驱动电流高于驱动电流的驱动电流光输出强度随着驱动电流的增加而增加的区域。

6. 发明申请

US20120183005A1 DRIVING CIRCUIT FOR ANALOG-MODULATED DIODE-LASER 有权
标题翻译：用于模拟二极管激光器的驱动电路
公开(公告)号：US20120183005A1
公开(公告)日：2012-07-19
申请号：US13009625
申请日：2011-01-19
申请人： Gilbert A. Hoffman , Richard J. Farmer
发明人： Gilbert A. Hoffman , Richard J. Farmer
IPC分类号： H01S5/06
CPC分类号： H01S5/06808 , H01S5/0427 , H01S5/06812
摘要： A diode-laser is driven by a modulated voltage through a voltage-to-current converter. The modulated voltage has a fixed level determined by an applied fixed bias voltage and a variable level determined by a modulation voltage signal varying between minimum and maximum values. The fixed voltage level corresponds to a threshold level above which the diode-laser would provide laser-output. The modulation voltage signal is monitored and compared with a predetermined set value. If the monitored voltage signal falls below the set value, the modulated voltage is disconnected from the voltage-to-current converter and the output of the diode-laser falls to zero.
摘要翻译：二极管激光器通过电压 - 电流转换器由调制电压驱动。调制电压具有由施加的固定偏置电压确定的固定电平和由在最小值和最大值之间变化的调制电压信号确定的可变电平。固定电压电平对应于阈值电平，二极管激光器之上将提供激光输出。监测调制电压信号并与预定的设定值进行比较。如果监控电压信号低于设定值，则调制电压与电压 - 电流转换器断开连接，二极管激光器的输出降至零。

7. 发明授权

US07894497B2 Driving circuit using probability density function 有权
标题翻译：驱动电路采用概率密度函数
公开(公告)号：US07894497B2
公开(公告)日：2011-02-22
申请号：US11902965
申请日：2007-09-26
申请人： Shigeo Hayashi
发明人： Shigeo Hayashi
IPC分类号： H01S3/00
CPC分类号： H01S5/06832 , H01S5/0427 , H01S5/06812
摘要： The present invention provides a laser diode driving circuit that enables to precisely control the amplitude of the driving current with suppressing the overshoot and the undershoot appeared in the monitor signal of the optical output from the laser diode. The driving circuit of the invention includes a signal mixer, a comparator, an averaging unit and a current generator. The signal mixer superposes an additional signal on the monitor signal. The amplitude of the additional signal varies in accordance with a preset distribution function. The comparator compares thus superposed signal with a reference level and outputs a binary signal. The averaging unit integrates this binary signal and the current generator provides the driving current based on the averaged binary signal.
摘要翻译：本发明提供一种激光二极管驱动电路，其能够通过抑制来自激光二极管的光输出的监视信号中的过冲和下冲而精确地控制驱动电流的振幅。本发明的驱动电路包括信号混频器，比较器，平均单元和电流发生器。信号混频器在监视器信号上叠加一个附加信号。附加信号的幅度根据预设分布函数而变化。比较器将这样叠加的信号与参考电平进行比较，并输出二进制信号。平均单元将该二进制信号进行积分，并且电流发生器基于平均二进制信号提供驱动电流。

8. 发明申请

US20100158055A1 METHOD AND APPARATUS FOR CONTROLLING AND MONITORING LASER POWER IN BARCODE READERS 审中-公开
标题翻译：用于控制和监测条形码读取器中激光功率的方法和装置
公开(公告)号：US20100158055A1
公开(公告)日：2010-06-24
申请号：US12337865
申请日：2008-12-18
申请人： James Giebel
发明人： James Giebel
IPC分类号： H01S3/13
CPC分类号： G06K7/10584 , H01S5/042 , H01S5/06808 , H01S5/06812 , H01S5/0683
摘要： A method of monitoring the output power of a laser diode in a barcode reader. The method includes sampling a threshold monitoring-current that is related the driving-current passing through the laser diode during a first time period when this current is at the lasing threshold of the laser diode. The method includes generating a threshold-compensated monitoring-current by subtracting the threshold monitoring-current from the above-threshold monitoring-current. The method includes monitoring the output power of the laser diode in the barcode reader at least partially based on the threshold-compensated monitoring-current.
摘要翻译：一种监视条形码读取器中激光二极管的输出功率的方法。该方法包括在该电流处于激光二极管的激光阈值的第一时间段期间对与在激光二极管中通过的驱动电流相关的阈值监视电流进行采样。该方法包括通过从上述阈值监视电流中减去阈值监视电流来产生阈值补偿监视电流。该方法包括至少部分地基于阈值补偿监视电流监视条形码读取器中的激光二极管的输出功率。

9. 发明授权

US07679819B2 Feed-forward current injection circuits and semiconductor optical amplifier structures for downstream optical signal reuse method 有权
标题翻译：前馈电流注入电路和下游光信号复用方法的半导体光放大器结构
公开(公告)号：US07679819B2
公开(公告)日：2010-03-16
申请号：US11651262
申请日：2007-01-09
申请人： Byoung Whi Kim , Mahn Yong Park , Seung Hyun Cho , Woo Ram Lee , Jie Hyun Lee , Geon Jeong , Chul Young Kim
发明人： Byoung Whi Kim , Mahn Yong Park , Seung Hyun Cho , Woo Ram Lee , Jie Hyun Lee , Geon Jeong , Chul Young Kim
IPC分类号： H01S3/00
CPC分类号： H01S5/50 , H01S5/06812 , H04J14/02 , H04J14/0282
摘要： A reflective semiconductor optical amplifier (RSOA) and an operating system based on a downstream optical signal reuse method with feed-forward current injection are provided. The RSOA has two active regions and includes a reflecting plane that reflects an input optical signal; and an optical amplifying semiconductor including a rear portion, which is positioned at a side of the reflecting plane and to which a signal having polarity opposite to that of the input optical signal is injected, and a front portion, which is positioned at a side opposite to the side of the rear portion facing the reflecting plane and which the input optical signal is passed though and a signal used to modulate a reflected input optical signal from the reflecting plane to an output optical signal is injected into.
摘要翻译：提供反射半导体光放大器（RSOA）和基于具有前馈电流注入的下行光信号重用方法的操作系统。 RSOA具有两个有效区域，并且包括反射输入光信号的反射平面; 以及光学放大半导体，其包括位于反射面的一侧并且具有与输入光信号的极性相反的信号的后部的后部，以及位于相反侧的一侧的前部到后面的面向反射面的一侧，并且输入光信号通过，并且将用于将反射的输入光信号从反射平面调制到输出光信号的信号被注入。

10. 发明申请

US20090225803A1 APPARATUS AND METHOD FOR MEASUREMENT OF DYNAMIC LASER SIGNALS 有权
标题翻译：用于测量动态激光信号的装置和方法
公开(公告)号：US20090225803A1
公开(公告)日：2009-09-10
申请号：US12364482
申请日：2009-02-02
申请人： Jorge Sanchez
发明人： Jorge Sanchez
IPC分类号： H01S3/00
CPC分类号： H04B10/564 , H01S5/042 , H01S5/06808 , H01S5/06812 , H01S5/06825 , H01S5/06832 , H01S5/06835 , H04B10/077 , H04B10/07955 , H04B10/504
摘要： A system contains a laser output measurement circuit used in a laser control system (210). The circuits contain a photodiode (109), sample and hold amplifier (202), IC with synchronizer and delay circuits (206), and an analog to digital converter (204). The circuits measure the laser light output (107) while the laser Module (106) transmits signals. The measurement circuit tracks and stores the laser light output (107) signal using a Photodiode Sensor (109) and with a Sample/hold (202). The methods calculate the value of the laser light output (107) from mathematical relationships, which correlate the light output (107) of the laser Module (106) to the current value of the drive signal (100). Some of the distinguishing features in the present invention are 1) feedback information from the photodiode is obtained in a synchronous manner as a snapshot of the laser performance, and 2) the measurements are precise and calibrated, and 3) no disruption of the signal transmission occurs.
摘要翻译：一种系统包含用于激光控制系统（210）中的激光输出测量电路。电路包含光电二极管（109），采样和保持放大器（202），具有同步器和延迟电路（206）的IC以及模 - 数转换器（204）。当激光模块（106）发射信号时，这些电路测量激光输出（107）。测量电路使用光电二极管传感器（109）和采样/保持（202）来跟踪并存储激光输出（107）信号。该方法根据将激光模块（106）的光输出（107）与驱动信号（100）的当前值相关联的数学关系计算出激光输出值（107）。本发明的一些区别特征是1）作为激光性能的快照以同步方式获得来自光电二极管的反馈信息，以及2）测量精确和校准，以及3）信号传输不中断发生。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式