Method of operating a SMI sensor and corresponding sensor device
    31.
    发明授权
    Method of operating a SMI sensor and corresponding sensor device 有权
    操作SMI传感器和相应的传感器装置的方法

    公开(公告)号:US08982334B2

    公开(公告)日:2015-03-17

    申请号:US13390545

    申请日:2010-08-10

    CPC分类号: G01S7/483 G01S17/06 G01S17/58

    摘要: The present invention refers to a method of operating a self-mixing interference sensor and a corresponding self-mixing interference sensor device. In the method the laser (1) of the device is controlled to periodically emit a laser pulse followed by an emission period of laser radiation having a lower amplitude. The pulse width of the laser pulse is selected such that the pulse after reflection at the object (3) re-enters the laser (1) during the emission period of laser radiation with lower amplitude. The corresponding SMI signal has an increased signal to noise ratio.

    摘要翻译: 本发明涉及一种操作自混合干涉传感器和相应的自混合干涉传感器装置的方法。 在该方法中,该装置的激光器(1)被控制以周期性地发射激光脉冲,随后是具有较低振幅的激光辐射的发射周期。 选择激光脉冲的脉冲宽度,使得在物体(3)反射之后的脉冲在具有较低振幅的激光辐射的发射周期期间重新进入激光器(1)。 相应的SMI信号具有增加的信噪比。

    Security system comprising a self-mixing laser sensor and method of driving such a security system
    32.
    发明授权
    Security system comprising a self-mixing laser sensor and method of driving such a security system 有权
    包括自混合激光传感器的安全系统和驱动这种安全系统的方法

    公开(公告)号:US08781687B2

    公开(公告)日:2014-07-15

    申请号:US12992100

    申请日:2009-05-07

    IPC分类号: B60R21/015 G01P3/36 B60R21/00

    摘要: A security system is described, comprising a sensor module (15) which accommodates a laser sensor (10) working with self-mixing interference. The laser sensor (10) generates measurement data which are related to the velocity of an object such as the body of a human being and, optionally, the distance between the laser sensor (10) and the object. Dependent on the measurement data assembled by the laser sensor (10) and supplied to a control circuit (30) such as an airbag computer, the airbag computer activate security means such as an airbag (35)in order to prevent injuries of the human body. Furthermore, a method of driving such a security system is described.

    摘要翻译: 描述了一种安全系统,其包括传感器模块(15),该传感器模块(15)容纳使用自混合干扰的激光传感器(10)。 激光传感器(10)产生与物体(例如人体)和激光传感器(10)与物体之间的距离相关的测量数据。 根据由激光传感器(10)组装并提供给诸如气囊计算机的控制电路(30)的测量数据,气囊计算机启动诸如安全气囊(35)的安全装置,以防止人体受伤 。 此外,描述了驱动这种安全系统的方法。

    Sensor system, vehicle control system and driver information system for vehicle safety
    33.
    发明授权
    Sensor system, vehicle control system and driver information system for vehicle safety 有权
    传感器系统,车辆控制系统和车辆安全驾驶员信息系统

    公开(公告)号:US08751091B2

    公开(公告)日:2014-06-10

    申请号:US12919257

    申请日:2009-03-09

    IPC分类号: G06F11/30

    摘要: A sensor system is described, using self-mixing laser sensors (10) and an analyzer circuit (30) in order to determine the velocity of a vehicle, such as a car, and the rotational velocity of a wheel (20) of the car. Deviations between the velocity of the vehicle and the rotational velocity of the wheel (20) can be used to determine sliding of the wheel (20) and, finally, the traction or, more specifically, the coefficient of driving friction between the wheel (20) and the surface the car is driving on. Furthermore, a vehicle control system is described, initiating test accelerations of a wheel (20) by means of a control circuit (50) and control means (300, 400) in order to determine the coefficient of driving friction during driving. The test accelerations initiate short periods of sliding of the wheel (20) and the sliding is detected by means of the sensor system.

    摘要翻译: 使用自混合激光传感器(10)和分析器电路(30)来描述传感器系统,以便确定诸如汽车的车辆的速度和车辆的车轮(20)的转速 。 可以使用车辆速度与车轮(20)的旋转速度之间的偏差来确定车轮(20)的滑动,最后确定车轮(20)的牵引力,或者更具体地说,车轮(20)之间的驱动摩擦系数 )和汽车驾驶的表面。 此外,描述了车辆控制系统,借助于控制电路(50)和控制装置(300,400)来启动车轮(20)的测试加速度,以便确定驾驶中的驱动摩擦系数。 测试加速度启动轮(20)的短时间滑动,并且通过传感器系统检测滑动。

    Laser sensor system based on self-mixing interference
    34.
    发明授权
    Laser sensor system based on self-mixing interference 有权
    基于自混合干涉的激光传感器系统

    公开(公告)号:US08692979B2

    公开(公告)日:2014-04-08

    申请号:US12812046

    申请日:2009-01-12

    IPC分类号: G01C3/00 G01P3/36

    摘要: A sensor module (1) for measuring the distance to a target and/or the velocity of the target (50), the sensor module (1) comprising at least one laser source (100), at least one detector (200) being adapted to detect modulated laser light and at least one control element the control element (400) being adapted to vary the focus point of the laser light and/or the intensity of the laser light and/or the direction of the laser light. The control of the laser light emitted by the laser source (100) either by active optical devices as variable focus lenses or controllable attenuators or passive optical elements in combination with arrays of laser sources (100) and detectors (200) enable flexible and robust sensor modules.

    摘要翻译: 传感器模块(1),用于测量与目标的距离和/或目标(50)的速度,传感器模块(1)包括至少一个激光源(100),至少一个检测器(200) 以检测调制的激光和至少一个控制元件,所述控制元件(400)适于改变激光的焦点和/或激光的强度和/或激光的方向。 由激光源(100)发射的激光源(由激光源(100))作为可变焦距透镜或可控衰减器或无源光学元件与激光光源(100)和检测器(200)阵列组合而控制的激光使得柔性和鲁棒的传感器 模块。

    OPTICAL ELEMENT FOR VERTICAL EXTERNAL-CAVITY SURFACE-EMITTING LASER
    35.
    发明申请
    OPTICAL ELEMENT FOR VERTICAL EXTERNAL-CAVITY SURFACE-EMITTING LASER 有权
    用于垂直外部表面发射激光的光学元件

    公开(公告)号:US20130223466A1

    公开(公告)日:2013-08-29

    申请号:US13882998

    申请日:2011-11-01

    IPC分类号: H01S5/183

    摘要: The present invention relates to an optical element for VEC-SELs or VECSEL arrays. The optical element is formed of a substrate (200) which is transparent at least in a wavelength region of optical radiation. A first interface of the- substrate (200) comprises one or several curved regions forming part of an optical lens or of an array of optical lenses (220) integrated in the substrate (200). The substrate (200) further comprises one or several optical mirrors (210) formed on a second interface of the substrate (200) opposing the first interface or embedded in the substrate (200). The optical mirrors (210) are arranged and designed to back reflect a fraction of optical radiation incident on the first or second interface. The optical mirrors (210) are flat mirrors or curved mirrors having a radius of curvature different from the radius of curvature of the curved region (220). The optical element allows the fabrication of a VECSEL or VECSEL array having a high brightness without the requirement of additional adjustments during fabrication. The VECSEL are arranged at a distance (L) to the optical mirrors (210) and this equals the length of the external cavity. The ROC of the optical lens may be chosen to ROC=L/2 and for the optical mirror ROC>L. The cavity length may be adjusted by a monolithic spacer (120)

    摘要翻译: 本发明涉及一种用于VEC-SEL或VECSEL阵列的光学元件。 光学元件由至少在光辐射的波长区域中透明的基板(200)形成。 衬底(200)的第一界面包括形成光学透镜的一部分或整合在衬底(200)中的光学透镜阵列的一个或多个弯曲区域。 衬底(200)还包括形成在与第一界面相对或嵌入在衬底(200)中的衬底(200)的第二界面上的一个或多个光学镜(210)。 光学镜(210)被布置和设计成反射入射在第一或第二界面上的一部分光学辐射。 光学镜(210)是具有不同于弯曲区域(220)的曲率半径的曲率半径的平面镜或曲面镜。 光学元件允许制造具有高亮度的VECSEL或VECSEL阵列,而不需要在制造期间进行额外的调整。 VECSEL布置在与光学镜(210)的距离(L)处,并且这等于外腔的长度。 光学透镜的ROC可以选择为ROC = L / 2,对于光学镜ROC> L。 空腔长度可以通过整体式隔离件(120)

    SWITCHABLE DUAL WAVELENGTH SOLID STATE LASER
    36.
    发明申请
    SWITCHABLE DUAL WAVELENGTH SOLID STATE LASER 失效
    可开关双波长固体激光器

    公开(公告)号:US20120128023A1

    公开(公告)日:2012-05-24

    申请号:US12672553

    申请日:2008-08-14

    IPC分类号: H01S3/08

    摘要: The present invention relates to a switchable dual wavelength solid state laser with a solid state gain medium (1) which is selected to emit optical radiation at a first wavelength with a first polarization and of at least a second wavelength with a second polarization different from said first polarization when optically or electrically pumped. A polarizing device (7) is arranged within the laser cavity, said polarizing device (7) being adjustable at least between said first and said second polarization. The two end mirrors (2, 3) of the laser cavity are designed to allow lasing of the solid state laser at the first wavelength when the polarizing device (7) is adjusted to the first polarization, and to allow lasing of the solid state laser at the second wavelength when the polarizing device (7) is adjusted to the second polarization. The proposed solid state laser allows an easy switching between two emission wavelengths.

    摘要翻译: 本发明涉及具有固态增益介质(1)的可切换双波长固态激光器,其被选择为发射具有第一偏振的第一波长的光辐射和具有不同于所述第一偏振的第二偏振的至少第二波长 光学或电泵浦时的第一极化。 偏振装置(7)布置在激光腔内,所述偏振装置(7)至少在所述第一和所述第二极化之间是可调节的。 激光腔的两端镜(2,3)被设计成当偏振装置(7)被调节到第一偏振时允许固态激光器以第一波长的激光,并且允许固态激光器的激光 当偏振装置(7)被调节到第二偏振时,在第二波长处。 所提出的固态激光器允许在两个发射波长之间容易切换​​。

    VERTICAL EXTENDED CAVITY SURFACE EMISSION LASER AND METHOD FOR MANUFACTURING A LIGHT EMITTING COMPONENT OF THE SAME
    38.
    发明申请
    VERTICAL EXTENDED CAVITY SURFACE EMISSION LASER AND METHOD FOR MANUFACTURING A LIGHT EMITTING COMPONENT OF THE SAME 有权
    垂直延伸的表面辐射激光器及其发光元件的制造方法

    公开(公告)号:US20100195690A1

    公开(公告)日:2010-08-05

    申请号:US12530563

    申请日:2008-03-10

    摘要: The present invention relates to a method of manufacturing the light emitting component of a VECSEL and the corresponding VECSEL. In the method a layer stack (2) is epitaxially grown on a semiconductor substrate (1). The layer stack comprises an active region (4), an upper distributed Bragg reflector (5) and a n- or p-doped current injection layer (13) arranged between the active region (4) and the semiconductor substrate (1). A mechanical support (6) or submount is bonded to an upper side of the layer stack (2) and the semiconductor substrate (1) is subsequently removed. A metallization layer (7) is optionally deposited on the lower side of the layer stack (2) and an optically transparent substrate (8) is bonded to this lower side. The proposed method allows the manufacturing of such a component in a standard manner and results in a VECSEL with a homogenous current injection and high efficiency of heat dissipation.

    摘要翻译: 本发明涉及一种制造VECSEL发光元件的方法及相应的VECSEL。 在该方法中,在半导体衬底(1)上外延生长层堆叠(2)。 层堆叠包括有源区(4),上分布布拉格反射器(5)和布置在有源区(4)和半导体衬底(1)之间的n或p掺杂电流注入层(13)。 机械支撑件(6)或基座被接合到层堆叠(2)的上侧,并且随后去除半导体衬底(1)。 金属化层(7)任选地沉积在层叠体(2)的下侧,并且光学透明基板(8)结合到该下层。 所提出的方法允许以标准方式制造这种部件,并且产生具有均匀电流注入和高效散热的VECSEL。

    Method and circuit arrangement for operating a discharge lamp
    40.
    发明授权
    Method and circuit arrangement for operating a discharge lamp 有权
    用于操作放电灯的方法和电路装置

    公开(公告)号:US07619369B2

    公开(公告)日:2009-11-17

    申请号:US10596474

    申请日:2004-12-16

    IPC分类号: H05B37/02

    CPC分类号: H01J61/0732 H05B41/2928

    摘要: A method and a circuit arrangement for operating a discharge lamp, in particular during the first hours of operation after lamp manufacture, are described. The method and the circuit arrangement are provided in particular for high-pressure gas discharge lamps (HID or high intensity discharge lamps or UHP or ultra high performance lamps). Furthermore, a lighting unit with a discharge lamp and such a circuit arrangement and a projection system with a projection display and such a lighting unit are described. Switching-over between various modes of operation with different operating frequencies serves to avoid that the burning voltage of the lamp drops into a region of a minimum voltage of a lamp driver unit below which the latter can no longer drive the lamp with its rated power or a desired power.

    摘要翻译: 描述了用于操作放电灯的方法和电路装置,特别是在灯制造之后的第一小时操作期间。 该方法和电路装置特别用于高压气体放电灯(HID或高强度放电灯或UHP或超高性能灯)。 此外,描述了具有放电灯和这种电路装置的照明单元以及具有投影显示器和这种照明单元的投影系统。 在不同操作频率的各种操作模式之间的切换用于避免灯的燃烧电压下降到灯驱动器单元的最小电压的区域中,在该区域中,后者不能以其额定功率驱动灯,或者 所需的力量