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1. 发明授权

US06424412B1 Efficient system and method for detecting and correcting laser misalignment of plural laser beams 有权
标题翻译：用于检测和校正多个激光束的激光失准的高效系统和方法
公开(公告)号：US06424412B1
公开(公告)日：2002-07-23
申请号：US09651165
申请日：2000-08-30
申请人： Edward W. Matthews
发明人： Edward W. Matthews
IPC分类号： G01B1126
CPC分类号： G01B11/26 , G02B27/0031 , G02B27/01 , G02B27/0101 , G02B2027/011 , H01S3/005 , H04N9/3129 , H04N9/3164 , H04N9/3185
摘要： A system for detecting deviations from an optical axis of one or more individual component beams associated with plural laser beams. The system includes a first mechanism that selectively isolates individual component beams from plural laser beams and provides the individual component beams as output in response thereto. A second mechanism detects deviations from a desired optical axis of the individual component beams output from the first mechanism. In the specific embodiment, the system further includes a mechanism that automatically corrects the detected deviations of each component beam of the plural beams. A beam pick-off device, such as a pick-off collimating lens or beam splitter, redirects a sample of the plural beams, which represents separated plural beams to a color wheel. The individual component beams include red, green, and blue laser beams. The color wheel selectively isolates the red, green, and/or blue beams from the separated plural beams and provides an isolated component beam as output in response thereto. A beam splitter splits the isolated component beam into a first split beam and a second split beam and directs the first split beam and the second split beam along a first optical path that terminates at a first detector and a second optical path that terminates at a second detector, respectively. The lengths of the first and second optical paths differ by a predetermined distance. Software running on a computer compares the relative position of the first split beam on the first detector to the position of the second split beam on the second detector with reference to the predetermined distance and provides a beam deviation signal in response thereto. The software then actuates a beam deviation correction system to correct for beam deviations indicated by the beam deviation signal associated with the isolated beam in the plural beams.
摘要翻译：一种用于检测与多个激光束相关联的一个或多个单独分量光束的光轴偏离的系统。该系统包括第一机构，其选择性地隔离来自多个激光束的各个分量光束，并且提供各个分量光束作为响应于此的输出。第二机构检测从第一机构输出的各个分量光束的期望光轴的偏差。在具体实施例中，该系统还包括一种自动校正多个波束中每个分量波束的检测偏差的机构。诸如拾取准直透镜或分束器之类的光束拾取装置将表示分离的多个光束的多个光束的样本重定向到色轮。各个分量光束包括红色，绿色和蓝色激光束。色轮选择性地隔离分离的多个光束的红色，绿色和/或蓝色光束，并提供隔离的分量光束作为响应于此的输出。分束器将隔离的分量光束分裂成第一分割光束和第二分割光束，并沿着第一光路引导第一分割光束和第二分割光束，该第一光路终止于第一检测器，第二光路终止于第二光路检测器。第一和第二光路的长度相差预定距离。在计算机上运行的软件参考预定距离将第一分离光束在第一检测器上的相对位置与第二分离光束在第二检测器上的位置进行比较，并响应于此提供光束偏移信号。该软件然后致动一个光束偏移校正系统来校正由多个光束中的隔离光束相关联的光束偏移信号指示的光束偏差。

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