公开(公告)号：US4676598A

公开(公告)日：1987-06-30

申请号：US734325

申请日：1985-05-15

申请人： Theodore J. Markley ,  Richard J. Omlor ,  William K. Vatter ,  Mark D. Sobottke

发明人： Theodore J. Markley ,  Richard J. Omlor ,  William K. Vatter ,  Mark D. Sobottke

IPC分类号： G01C15/00 ,  G02B27/14

CPC分类号： G02B27/144 ,  G01C15/004

摘要： Apparatus for projecting a laser beam to provide simultaneously a stationary reference beam and a moving reference beam, which rotates in a plane normal to the stationary reference beam, includes a beam diverting arrangement for intercepting a primary beam and for splitting the beam into the two reference beams. The beam diverting arrangement includes first and second deflecting elements which deflect the beam by 90.degree. with respect to the primary beam. A portion of the primary beam, striking the first deflecting element, passes through the element and is shifted slightly by refraction. This shift is compensated by a third beam deflecting element which is fully transmissive, and which refracts the stationary reference beam into alignment with the primary beam. By cutting the first and third deflection elements from the same sheet of material and reorienting the elements appropriately, slight deviation from parallelism in the opposing surfaces of the sheet of material are compensated.

摘要翻译： 用于投射激光束以同时提供静止参考光束的装置和在垂直于固定参考光束的平面中旋转的移动参考光束包括用于拦截主光束并将光束分成两个参考的光束转移装置 梁。 光束转向装置包括相对于主光束将光束偏转90°的第一和第二偏转元件。 撞击第一偏转元件的主光束的一部分穿过元件并通过折射稍微偏移。 该偏移由完全透射的第三光束偏转元件补偿，并且将固定参考光束折射成与主光束对准。 通过从相同的材料片切割第一和第三偏转元件并适当地重新定向元件，补偿了材料片的相对表面中的平行度的轻微偏差。