Light source apparatus and its control method
    61.
    发明授权
    Light source apparatus and its control method 失效
    光源装置及其控制方法

    公开(公告)号:US07010006B2

    公开(公告)日:2006-03-07

    申请号:US10465948

    申请日:2002-06-21

    Abstract: A light source device can attain a stable output of a harmonic even when there occurs a change in the ambient temperature or fluctuation in the output power. The light source device is provided with a semiconductor laser source (4), an optical waveguide-type QPM-SHG device (5) for generating a second harmonic from light emitted from the semiconductor laser source (4), a wavelength control means (7) for controlling a wavelength of light emitted from the semiconductor laser source (4), a means for slightly fluctuating wavelength (8) for changing a wavelength of light emitted from the semiconductor laser source (4) and a means for detecting a change in output light power of the optical waveguide-type QPM-SHG device (5) that occurs when a wavelength of light emitted from the semiconductor laser source (4) is changed. In this case, a wavelength of light emitted from the semiconductor laser source (4) is controlled to an optimum wavelength of the optical waveguide-type QPM-SHG device (5) based on a change in output light power of the optical waveguide-type QPM-SHG device (5) that occurs when a wavelength of light emitted from the semiconductor laser source (4) is changed.

    Abstract translation: 即使发生环境温度的变化或输出功率的波动,光源装置也可以获得稳定的谐波输出。 光源装置设置有半导体激光源(4),用于从半导体激光源(4)发射的光产生二次谐波的光波导型QPM-SHG器件(5),波长控制装置(7) ),用于控制从半导体激光源(4)发射的光的波长,用于稍微波动的用于改变从半导体激光源(4)发射的光的波长的波长(8)的装置和用于检测输出变化的装置 当从半导体激光源(4)发射的光的波长改变时发生的光波导型QPM-SHG器件(5)的光功率变化。 在这种情况下,基于光波导型的输出光功率的变化,从半导体激光源(4)发射的光的波长被控制到光波导型QPM-SHG器件(5)的最佳波长 当从半导体激光源(4)发射的光的波长改变时发生的QPM-SHG器件(5)。

    Holographic optical information recording/reproducing device
    62.
    发明授权
    Holographic optical information recording/reproducing device 失效
    全息光学信息记录/再现装置

    公开(公告)号:US06958967B2

    公开(公告)日:2005-10-25

    申请号:US09993198

    申请日:2001-11-14

    Abstract: An optical information recording/reproducing device reproduces digital data recorded in a form of interference fringes produced by two coherent beams in a hologram disk, by projecting a coherent beam to the hologram disk and receiving a reproduction signal beam obtained by diffraction by means of a two-dimensional photodetector array. The holographic optical information recording/reproducing device includes a tunable coherent light source that emits the coherent beam, and a control section controls and optimizes a wavelength of the tunable coherent light source according to position information of the reproduction signal beam on the two-dimensional photodetector array. Thus, a holographic optical information recording/reproducing device is provided that is capable of maintaining a sufficient reproduction signal intensity and reproducing signals stably while undergoing a minimum of cross-talk, even in the case where the optimal reproduction wavelength varies due to a variance of media, a change of a temperature of a recording medium, etc.

    Abstract translation: 光信息记录/再现装置通过将相干光束投射到全息图盘并且通过二次衍射获得的再现信号光束再现以全息图盘中的两个相干光束产生的干涉条纹形式记录的数字数据 三维光电探测器阵列。 全息光信息记录/再现装置包括发射相干光束的可调谐相干光源,并且控制部分根据二维光电探测器上再现信号光束的位置信息来控制和优化可调谐相干光源的波长 数组。 因此,提供了一种全息光学信息记录/再现装置,其能够在经历最小串扰的情况下稳定地保持足够的再现信号强度和再现信号,即使在最佳再现波长由于 介质,记录介质的温度变化等

    Control device for hybrid vehicle
    64.
    发明授权
    Control device for hybrid vehicle 有权
    混合动力汽车控制装置

    公开(公告)号:US06835160B2

    公开(公告)日:2004-12-28

    申请号:US10340829

    申请日:2003-01-13

    Abstract: A control device for a hybrid vehicle is described which enables preventing a decrease in the efficiency of regeneration even when the revolution rate of an internal combustion engine is decreased during deceleration of the vehicle. The control device for a hybrid vehicle comprises an internal combustion engine and a motor connected in series with respect to each other, a torque converter which is connected to the rotational axis of the motor and which is provided with a lockup clutch, a transmission, a mechanical oil pump producing oil pressure for controllably operating the torque converter and the transmission, a motor-driven oil pump producing oil pressure for controllably operating the lockup clutch, and an ECU. The ECU operates the motor-driven oil pump depending on the deceleration state of the vehicle, and sets the lockup clutch in an engaged state. A method for operating the concerned control device is also described.

    Abstract translation: 描述了一种用于混合动力车辆的控制装置,其即使在车辆减速期间内燃机的转速减小时也能够防止再生效率的降低。 用于混合动力车辆的控制装置包括:内燃机和相对于彼此串联连接的电动机;变矩器,其连接到电动机的旋转轴线,并设置有锁止离合器,变速器, 机械油泵产生用于可控制地操作变矩器和变速器的油压,产生用于可控地操作锁止离合器的油压的电动机油泵和ECU。 ECU根据车辆的减速状态来操作电动机油泵,将锁止离合器设定在接合状态。 还描述了用于操作相关控制装置的方法。

    Method for stabilizing output of higher harmonic waves and short wavelength laser beam source using the same
    66.
    发明授权
    Method for stabilizing output of higher harmonic waves and short wavelength laser beam source using the same 失效
    用于稳定高次谐波输出和使用其的短波长激光束源的方法

    公开(公告)号:US06323990B1

    公开(公告)日:2001-11-27

    申请号:US09247500

    申请日:1999-02-10

    Abstract: A laser beam as fundamental waves which is emitted from a distribution Bragg reflection (DBR) semiconductor laser is incident on an optical waveguide of a light wavelength conversion device in which domain-inverted regions and the optical waveguide are formed in an LiTaO3 substrate. The wavelength of the incident laser beam is then converted so as to obtain higher harmonic waves such as blue light. In the conversion, a drive current to be applied to a DBR portion of the DBR semiconductor laser is changed so as to change an oscillating wavelength of the DBR semiconductor laser, thereby matching the oscillating wavelength with a phase-matched wavelength of the light wavelength conversion device. Thus, the generation of the harmonic waves to be output is stably controlled.

    Abstract translation: 作为从分布布拉格反射(DBR)半导体激光器发射的基波的激光束入射到其中在LiTaO 3衬底中形成畴反转区域和光波导的光波长转换器件的光波导上。 然后将入射激光束的波长转换为获得诸如蓝光的高次谐波。 在该转换中,改变施加到DBR半导体激光器的DBR部分的驱动电流,以改变DBR半导体激光器的振荡波长,从而使振荡波长与光波长转换的相位匹配波长匹配 设备。 因此,稳定地控制要输出的谐波的产生。

    Optical apparatus and method for producing the same
    70.
    发明授权
    Optical apparatus and method for producing the same 失效
    光学装置及其制造方法

    公开(公告)号:US5960259A

    公开(公告)日:1999-09-28

    申请号:US937131

    申请日:1997-09-24

    Abstract: A light generating apparatus includes: a submount; a semiconductor laser chip mounted on the submount; a substrate which is mount on the submount and includes an optical waveguide; and a substance having a predetermined thickness which is disposed between the semiconductor laser chip and the substrate. In an oscillation wavelength stabilizing apparatus for a light source, the light source is a semiconductor laser which includes: an active region for providing gain; and a distributed Bragg reflection (DBR) region for controlling an oscillation wavelength. The apparatus includes a control section which monotonously varies, in a first direction, a DBR current to be input to the DBR region while detecting the oscillation wavelength of an output light of the semiconductor laser so as to detect a DBR current value I.sub.o corresponding to a predetermined wave-length value, and then monotonously varies the DBR current in a second direction which is opposite the first direction beyond the detected value I.sub.o and then monotonously varies the DBR current in the first direction again to set the DBR current at the detected value I.sub.o, thereby fixing the oscillation wavelength of the semiconductor laser chip at the predetermined wavelength value.

    Abstract translation: 一种发光装置,包括:底座; 安装在底座上的半导体激光芯片; 基板,其安装在所述基座上并且包括光波导; 以及设置在半导体激光芯片和基板之间的具有预定厚度的物质。 在用于光源的振荡波长稳定装置中,光源是半导体激光器,其包括:用于提供增益的有源区; 以及用于控制振荡波长的分布式布拉格反射(DBR)区域。 该装置包括控制部分,其在检测半导体激光器的输出光的振荡波长的同时,在第一方向上单向地变化要输入到DBR区域的DBR电流,以便检测对应于所述半导体激光器的DBR电流值Io 预定波长值,然后在与第一方向相反的第二方向上将DBR电流单调变化超过检测值Io,然后再次单向地改变第一方向上的DBR电流,以将DBR电流设定在检测值Io 从而将半导体激光器芯片的振荡波长固定在预定波长值。

Patent Agency Ranking