DISPLACEMENT MEASUREMENT SENSOR HEAD AND SYSTEM HAVING MEASUREMENT SUB-BEAMS COMPRISING ZEROTH ORDER AND FIRST ORDER DIFFRACTION COMPONENTS
    1.
    发明申请
    DISPLACEMENT MEASUREMENT SENSOR HEAD AND SYSTEM HAVING MEASUREMENT SUB-BEAMS COMPRISING ZEROTH ORDER AND FIRST ORDER DIFFRACTION COMPONENTS 有权
    位移测量传感器头和系统具有包含零件订单和第一订单差分成分的测量子

    公开(公告)号:US20080304079A1

    公开(公告)日:2008-12-11

    申请号:US12172810

    申请日:2008-07-14

    IPC分类号: G01B11/02

    摘要: A sensor head for use with a measurement grating is described. The sensor head comprises: a splitter grating configured to split a light beam into first and second measurement beams; a first retroreflector configured to retroreflect the first and second measurement beams toward the measurement grating; and a second retroreflector configured to retroreflect the first and second measurement beams toward the measurement grating. In one embodiment the second measurement beam is diffracted by the measurement grating to form first and second sub-beams and one of the first and second sub-beams comprises a zeroth order diffraction component and a first order diffraction component. In another embodiment, the first and second sub-beams each comprise a zeroth order diffraction component and a first order diffraction component.

    摘要翻译: 描述了与测量光栅一起使用的传感器头。 传感器头包括:分束器光栅,被配置为将光束分成第一和第二测量光束; 第一后向反射器,被配置为将所述第一和第二测量光束向所述测量光栅反向反射; 以及第二后向反射器,被配置为将第一和第二测量光束向后向反射向测量光栅。 在一个实施例中,第二测量光束被测量光栅衍射以形成第一和第二子光束,并且第一和第二子光束中的一个包括零级衍射分量和一阶衍射分量。 在另一个实施例中,第一和第二子光束各自包括零级衍射分量和一阶衍射分量。

    System and method for generating beams of light using an anisotropic acousto-optic modulator
    3.
    发明申请
    System and method for generating beams of light using an anisotropic acousto-optic modulator 失效
    使用各向异性声光调制器产生光束的系统和方法

    公开(公告)号:US20070097376A1

    公开(公告)日:2007-05-03

    申请号:US11263691

    申请日:2005-11-01

    IPC分类号: G01B9/02

    摘要: A light source system includes a beam source generating a first input beam of light. An anisotropic acousto-optic modulator (AOM) is positioned to receive the first input beam. The AOM includes a plurality of transducers for receiving control signals and generating corresponding acoustic waves that operate on the first input beam to generate first and second output beams with different frequencies and orthogonal linear polarizations. The first and second output beams have a combined optical power that is substantially the same as an optical power of the first input beam for a first input beam with one polarization and for a first input beam with two polarizations.

    摘要翻译: 光源系统包括产生第一输入光束的光束源。 定位各向异性声光调制器(AOM)以接收第一输入光束。 AOM包括多个换能器,用于接收控制信号并产生在第一输入波束上操作的对应声波,以产生具有不同频率和正交线性偏振的第一和第二输出波束。 第一和第二输出光束具有与用于具有一个偏振的第一输入光束的第一输入光束的光功率和具有两个偏振的第一输入光束基本相同的组合光功率。

    System and method for generating beams of light using an anisotropic acousto-optic modulator
    4.
    发明申请
    System and method for generating beams of light using an anisotropic acousto-optic modulator 失效
    使用各向异性声光调制器产生光束的系统和方法

    公开(公告)号:US20070097377A1

    公开(公告)日:2007-05-03

    申请号:US11264205

    申请日:2005-11-01

    IPC分类号: G01B9/02

    摘要: A light source system includes a beam source generating a first input beam of light with first and second beam components. The first component has a first linear polarization and a first frequency. The second component has a second linear polarization and a second frequency. The first and second linear polarizations are orthogonal. An anisotropic acousto-optic modulator (AOM) is positioned to receive the first input beam. The AOM is operable to change the polarization and frequency of the first and the second beam components in response to a control signal, and thereby generate first and second output beams corresponding to the first and second components, respectively.

    摘要翻译: 光源系统包括用第一和第二光束分量产生第一输入光束的光束源。 第一分量具有第一线性极化和第一频率。 第二分量具有第二线性极化和第二频率。 第一和第二线性极化是正交的。 定位各向异性声光调制器(AOM)以接收第一输入光束。 AOM可操作以响应于控制信号改变第一和第二光束分量的偏振和频率,从而分别产生对应于第一和第二分量的第一和第二输出光束。

    Phase digitizer for signals in imperfect quadrature
    5.
    发明申请
    Phase digitizer for signals in imperfect quadrature 有权
    相位数字转换器,用于不完全正交的信号

    公开(公告)号:US20050062624A1

    公开(公告)日:2005-03-24

    申请号:US10668851

    申请日:2003-09-23

    CPC分类号: H03M1/303

    摘要: A method of digitizing first and second signals in imperfect quadrature for obtaining characteristic parameters of the first signal comprises providing a first signal, the first signal comprising an inphase quasi-sinusoidal analog signal. The method comprises providing a second signal, the second signal comprising a quadrature signal. The method comprises digitizing the first signal at a sampling rate, thereby generating a first plurality of sets of digital signal waveform samples and digitizing the second signal at the sampling rate, thereby generating a second plurality of sets of digital signal waveform samples. The method comprises digitally processing successive first and second sets of digital signal waveform samples to generate continually updated digital characteristic parameters representing a characteristic behavior of the first signal.

    摘要翻译: 数字化不正确正交中的第一和第二信号以获得第一信号的特性参数的方法包括提供第一信号,第一信号包括同相准正弦模拟信号。 所述方法包括提供第二信号,所述第二信号包括正交信号。 该方法包括以采样率对第一信号进行数字化,从而产生第一多组数字信号波形样本,并以采样率对第二信号进行数字化,从而产生第二组多组数字信号波形样本。 该方法包括数字处理连续的第一和第二组数字信号波形样本以产生表示第一信号的特征行为的不断更新的数字特征参数。

    DIRECT COMBINATION OF FIBER OPTIC LIGHT BEAMS
    6.
    发明申请
    DIRECT COMBINATION OF FIBER OPTIC LIGHT BEAMS 有权
    光纤光束的直接组合

    公开(公告)号:US20050270542A1

    公开(公告)日:2005-12-08

    申请号:US09933606

    申请日:2001-08-20

    摘要: A manipulator for a fiber optic cable assembly (FOCA) provides microradian accuracy in control of the direction of a beam emanating from the FOCA. Such manipulators can control FOCAs to control the incidence angles of beams at a beam combiner in a beam-combining unit. Accordingly, fewer additional optical elements are required for control of input paths in the beam-combining unit. The manipulator and the beam-combining unit are accurate enough for use in an interferometer that combines beams with different frequencies and polarizations. One such interferometer includes a Zeeman split laser providing a heterodyne beam. A beam splitter separates frequency components of the beams, and AOMs increase the frequency separation between the separated beams. The separated beams can be sent via optical fibers to the beam-combining unit, which combines the beams for use in interferometer optics.

    摘要翻译: 用于光纤电缆组件(FOCA)的操纵器提供微控制精度来控制从FOCA发射的光束的方向。 这样的操纵器可以控制FOCA来控制波束组合单元中的波束组合器处的波束的入射角。 因此,需要更少的附加光学元件来控制光束组合单元中的输入路径。 操纵器和光束组合单元足够准确地用于组合具有不同频率和偏振的光束的干涉仪。 一种这样的干涉仪包括提供外差光束的塞曼分割激光器。 分束器分离光束的频率分量,并且AOM增加分离的光束之间的频率间隔。 分离的光束可以通过光纤发送到光束组合单元,其组合用于干涉仪光学元件的光束。

    Direct combination of fiber optic light beams
    8.
    发明申请
    Direct combination of fiber optic light beams 审中-公开
    直接组合光纤光束

    公开(公告)号:US20050008322A1

    公开(公告)日:2005-01-13

    申请号:US10913195

    申请日:2004-08-06

    摘要: A manipulator for a fiber optic cable assembly (FOCA) provides microradian accuracy in control of the direction of a beam emanating from the FOCA. Such manipulators can control FOCAs to control the incidence angles of beams at a beam combiner in a beam-combining unit. Accordingly, fewer additional optical elements are required for control of input paths in the beam-combining unit. The manipulator and the beam-combining unit are accurate enough for use in an interferometer that combines beams with different frequencies and polarizations. One such interferometer includes a Zeeman split laser providing a heterodyne beam. A beam splitter separates frequency components of the beams, and AOMs increase the frequency separation between the separated beams. The separated beams can be sent via optical fibers to the beam-combining unit, which combines the beams for use in interferometer optics.

    摘要翻译: 用于光纤电缆组件(FOCA)的操纵器提供微控制精度来控制从FOCA发射的光束的方向。 这样的操纵器可以控制FOCA来控制波束组合单元中的波束组合器处的波束的入射角。 因此,需要更少的附加光学元件来控制光束组合单元中的输入路径。 操纵器和光束组合单元足够准确地用于组合具有不同频率和偏振的光束的干涉仪。 一种这样的干涉仪包括提供外差光束的塞曼分割激光器。 分束器分离光束的频率分量,并且AOM增加分离的光束之间的频率间隔。 分离的光束可以通过光纤发送到光束组合单元,其组合用于干涉仪光学元件的光束。