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公开(公告)号：US6100984A
公开(公告)日：2000-08-08
申请号：US330916
申请日：1999-06-11
CPC分类号： G01B11/2527
摘要： A measurement system (10) for accurately measuring the surface geometry of a part in three dimensions includes a laser (22) for emitting a laser beam (20). An objective lens (18) receives the laser beam (20) and expands the received laser beam (20) into a diverged beam. A liquid crystal system (16) is disposed in front of the objective lens (18) with respect to the laser (22) for receiving the diverged beam. The liquid crystal system (16) receives the diverged beam and generates at least one fringe pattern (24) on a surface of a three dimensional part which is to be measured. A computer (12) is in communication with the liquid crystal system (16) to control the pitch and phase of the fringe pattern (24).
摘要翻译： 用于精确测量三维部分的表面几何形状的测量系统（10）包括用于发射激光束（20）的激光器（22）。 物镜（18）接收激光束（20）并将接收的激光束（20）扩展成发散的光束。 液晶系统（16）相对于用于接收发散光束的激光器（22）设置在物镜（18）的前方。 液晶系统（16）接收发散光束并且在待测量的三维部分的表面上产生至少一个条纹图案（24）。 计算机（12）与液晶系统（16）连通，以控制边缘图案（24）的间距和相位。
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公开(公告)号：US06760113B2
公开(公告)日：2004-07-06
申请号：US09812402
申请日：2001-03-20
IPC分类号： G01B902
CPC分类号： G01B11/2527
摘要： A measurement system (10) for accurately measuring the surface geometry of a part (32) in three dimensions includes a laser (12) for emitting a laser beam (14). The laser beam (14) is transmitted to a birefringent crystal (16) which splits the laser beam (14) into a pair of beams (18,20). The pair of beams (18,20) are then subjected to a phase shift by a liquid crystal system (24) as controlled by a computer (26). The pair of beams (18,20) are then expanded in order to form a fringe pattern (30) on the surface of the part (32) to be measured.
摘要翻译： 用于精确测量三维部分（32）的表面几何形状的测量系统（10）包括用于发射激光束（14）的激光器（12）。 激光束（14）被传输到将激光束（14）分成一对光束（18,20）的双折射晶体（16）。 然后，一对光束（18,20）由计算机（26）控制的液晶系统（24）进行相移。 然后，一对梁（18,20）被膨胀以在待测量的部件（32）的表面上形成条纹图案（30）。
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