Measurement system using tracking-type laser interferometer and return method of the measurement system

    公开(公告)号:US10162041B2

    公开(公告)日:2018-12-25

    申请号:US15095418

    申请日:2016-04-11

    发明人: Naoyuki Taketomi

    摘要: When measurement is conducted using a measurement system utilizing a tracking-type laser interferometer, laser light is emitted at a retroreflector, the tracking-type laser interferometer is placed in a tracking state, and a displacement body is displaced to a desired point and a combination of position data of the displacement body at a single desired location and rotation position data of a biaxial rotation mechanism from the tracking-type laser interferometer is stored. When a received light determiner determines that there is an abnormality in an amount of light, the positions of the displacement body and the biaxial rotation mechanism are maintained, and the displacement body and biaxial rotation mechanism are displaced to the respective stored, predetermined positions. When the abnormality in the amount of received light is eliminated after displacement, the tracking-type laser interferometer is placed in the tracking state and measurement is restarted.

    Feedback gain adjusting method and device of tracking-type laser interferometer and tracking-type laser interferometer

    公开(公告)号:US10120059B2

    公开(公告)日:2018-11-06

    申请号:US15664051

    申请日:2017-07-31

    发明人: Shinichi Hara

    IPC分类号: G01S17/66 G01S3/786

    摘要: A laser interferometer that includes a laser interferometer, an position sensitive detector detecting an offset of an optical axis of the laser interferometer, a biaxial rotator turning the laser interferometer toward an arbitrary direction, an angle sensor detecting a rotation angle of the biaxial rotator, a retro reflector reflecting reflected light in a direction parallel to incident light, and a controller performing feedback control of the biaxial rotator so as to track the retro reflector based on signals from the position sensitive detector and the angle sensor. The tracking-type laser interferometer starts tracking control when return light from the retro reflector is returned to a detection range of the position sensitive detector, and changes gain for the feedback control in accordance with a behavior for a position of the return light on the position sensitive detector due to the tracking control.

    Vision based real-time object tracking system for robotic gimbal control

    公开(公告)号:US10095942B2

    公开(公告)日:2018-10-09

    申请号:US14968892

    申请日:2015-12-14

    摘要: Using various embodiments, methods, systems, and apparatuses for controlling a camera pivoting device (e.g., mechanical gimbal) are described. In one embodiment, the system comprises a main computing device, a gimbal stabilizer controller, and a computer vision camera, and/or a user camera. The system is able to track a target object using the computer vision camera even while the target object is moving, the base of the pivoting device is moving (e.g., when a user controlling the camera moves), or a combination of thereof. The camera pivoting device of the embodiments disclosed herein can be mounted on to any number of devices/objects that can provide mobility and/or transportation.

    Optical system for tracking a target

    公开(公告)号:US10088569B2

    公开(公告)日:2018-10-02

    申请号:US14553983

    申请日:2014-11-25

    申请人: Trimble Jena GmbH

    摘要: Optical system for tracking and visually examining a target, comprising an image sensor and a lens arrangement having a variable position relative to the image sensor to project an image of the target onto the image sensor, a light source for emitting light in a predetermined wavelength range in the direction of the target and a filter switch for switching an optical filter for selectively allowing the light in the predetermined wavelength range to pass through to the image sensor into and out of the optical path to optionally perform a visual examination and monitoring of the tracking. A tracking device is provided to perform the tracking of the target using the reflected light in the predetermined wavelength range in a sequence of images held by the image sensor when the first optical filter is switched into the optical path.