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Active Alignment Using Continuous Motion Sweeps and Temporal Interpolation

  • US 20130274923A1
  • Filed: 04/12/2013
  • Published: 10/17/2013
  • Est. Priority Date: 04/13/2012
  • Status: Active Grant
First Claim
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1. A computer-implemented method for actively aligning a first optical element to a second optical element, the method comprising performing, by a processor, operations ofcausing a robot to continuously scan the first optical element along a trajectory from a starting location to an ending location;

  • while the robot continuously scans the first optical element from the starting location to the ending location;

    storing a plurality of time spaced-apart positions of the first optical element; and

    acquiring a plurality of time spaced-apart alignment data items, wherein each alignment data item of the plurality of time spaced-apart alignment data items;

    results from an optical signal that passed through the first optical element and was received by the second optical element; and

    contains data indicative of a degree of optical alignment between the first optical element and the second optical element;

    estimating a desired alignment position, based at least in part on the plurality of time spaced-apart alignment data items and the plurality of time spaced-apart positions of the first optical element; and

    causing the robot to move the first optical element to the desired alignment position.

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