公开(公告)号：US4931637A

公开(公告)日：1990-06-05

申请号：US396805

申请日：1989-08-21

申请人： Shmuel Succari ,  Shalev Gilad ,  Michael Nagler ,  Avigdor Beiber ,  Dov Berman

发明人： Shmuel Succari ,  Shalev Gilad ,  Michael Nagler ,  Avigdor Beiber ,  Dov Berman

IPC分类号： B41J2/44 ,  B41J2/485 ,  G02B26/10 ,  H01S3/101 ,  H04N1/028 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12

CPC分类号： H04N1/0283 ,  H04N1/0281 ,  H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/04729

摘要： A laser beam scanner comprising a laser source, apparatus for producing a scanning beam and a reference beam which are generally parallel, apparatus for directing the scanning beam onto a surface to be scanned, and apparatus for determining the position of the scanning beam in real time in two dimensions by sensing the position of the reference beam, and wherein the apparatus for sensing the position of the reference beam comprises a grating disposed along a scan axis and defining a multiplicity of first grating lines along the scan axis, which permit the definition of the position of the reference beam in a first dimension, a second grating line disposed across the multiplicity of first grating lines and first and second sensors disposed at respective sides of the second grating line, for sensing the relative amount of light impinging above and below the second grating line, for permitting the definition of the reference beam in a second dimension, whereby the position of the reference beam may be determined both along the scan axis and perpendicular thereto at every location along the scan axis.

摘要翻译： 一种激光束扫描器，包括激光源，用于产生扫描光束的装置和大致平行的参考光束，用于将扫描光束引导到待扫描的表面上的装置，以及用于实时确定扫描光束的位置的装置 通过感测参考光束的位置在两个维度上，并且其中用于感测参考光束的位置的装置包括沿着扫描轴设置的光栅并且沿扫描轴限定多个第一光栅线，这允许定义 在第一维度上的参考光束的位置，跨越多个第一光栅线布置的第二光栅线和设置在第二光栅线的相应侧的第一和第二传感器，用于感测入射在第二光栅线的上方和下方的光的相对量 第二光栅线，用于允许在第二维度中定义参考光束，由此参考的位置 e光束可以沿着扫描轴线确定，并且沿着扫描轴线的每个位置垂直于其。