Optical readhead
    1.
    发明申请
    Optical readhead 审中-公开
    光学读数头

    公开(公告)号:US20070177157A1

    公开(公告)日:2007-08-02

    申请号:US10590443

    申请日:2005-03-04

    IPC分类号: G01B9/02

    摘要: Interferometry apparatus which comprises a measurement light beam (2a, 2b) and a reference light beam (2c, 2d) which interact with each other to cause a spatial fringe pattern (24). An optical device (12) is provided which interacts with the spatial fringe pattern (24), such that light is spatially separated into different directions (30, 32, 34, 36). The intensity modulation in two or more directions of the spatially separated light is phase shifted. The optical device may comprise, for example, a diffractive device, a refractive device or a diffractive optical element.

    摘要翻译: 干涉测量装置,其包括彼此相互作用以产生空间条纹图案(24)的测量光束(2a,2b)和参考光束(2c,2d)。 提供了与空间条纹图案(24)相互作用的光学装置(12),使得光在空间上分离成不同的方向(30,32,34,36)。 在空间分离的光的两个或更多个方向上的强度调制是相移的。 光学装置可以包括例如衍射装置,折射装置或衍射光学元件。

    Laser calibration apparatus
    2.
    发明申请
    Laser calibration apparatus 审中-公开
    激光校准仪

    公开(公告)号:US20060215179A1

    公开(公告)日:2006-09-28

    申请号:US10518918

    申请日:2003-07-07

    IPC分类号: G01B5/004 G01B11/14

    摘要: Apparatus for measuring deviation of a trajectory from a straight line in the movement of a first body with respect to a second body comprising a transmitter unit mounted on one of the bodies and an optic unit mounted on the other of the bodies. The transmitter unit directs at least one light beam towards the optic unit such that two or more light beams are received within it. One of the units is provided with two or more detectors to detect the light beams transmitted to or reflected from the optic unit. The position of the light beams on the detectors is used to calculate the deviation of a trajectory from a straight line of one of the bodies with respect to the other in at least one degree of freedom. This enables measurement of straightness, pitch, roll, yaw and squareness errors.

    摘要翻译: 用于测量轨迹与第一主体相对于第二主体的移动中的直线的偏离的装置,包括安装在一个主体上的发射器单元和安装在另一个主体上的光学单元。 发射器单元将至少一个光束引导到光学单元,使得在其内接收两个或更多个光束。 其中一个单元设置有两个或更多个检测器,用于检测传输到光学单元或从光学单元反射的光束。 光束在检测器上的位置用于在至少一个自由度中计算轨迹与一个物体的直线相对于另一个的直线的偏差。 这样可以测量平直度,俯仰,滚动,偏航和平方度误差。

    Frequency stabilized laser system comprising phase modulation of backscattered light
    3.
    发明申请
    Frequency stabilized laser system comprising phase modulation of backscattered light 审中-公开
    频率稳定的激光系统,包括背散射光的相位调制

    公开(公告)号:US20050185685A1

    公开(公告)日:2005-08-25

    申请号:US11085158

    申请日:2005-03-22

    摘要: A laser system is disclosed comprising a laser source for producing a laser beam along a beam path, means to stabilize the frequency of the laser beam, at least one optical component which produces back-scattered light when in use, and a phase modulator for modulating the phase of the back-scattered light. The optical component may be a plane mirror or an optical fibre. The phase modulator may be an oscillating glass block, optionally driven by a motor. Alternatively, the phase modulator is a glass block cyclically compressed by a piezoelectric element.

    摘要翻译: 公开了一种激光系统,其包括用于沿光束路径产生激光束的激光源,用于稳定激光束的频率的装置,在使用时产生反向散射光的至少一个光学部件,以及用于调制 背散射光的相位。 光学部件可以是平面镜或光纤。 相位调制器可以是可选地由电动机驱动的振荡玻璃块。 或者,相位调制器是由压电元件循环压缩的玻璃块。