公开(公告)号：US4662707A

公开(公告)日：1987-05-05

申请号：US781094

申请日：1985-09-27

申请人： Ted L. Teach ,  Mark D. Sobottke

发明人： Ted L. Teach ,  Mark D. Sobottke

IPC分类号： G02B27/30 ,  G01C15/00 ,  G02B26/08

CPC分类号： G01C15/004

摘要： An apparatus for projecting a laser beam in a reference plane includes several imrovements. A generally cylindrical, one-piece molded transparent lighthouse structure overlies the rotatable pentaprism beam diverting assembly of the apparatus. The lighthouse structure is mounted on the housing so as to allow transmission therethrough of the rotating laser beam projected by the beam diverting assembly. The lighthouse structure has a tapered or conical configuration facilitating molding thereof, but which produces a divergence of the laser beam as it passes through the structure. A continuous resilient flexible ring is adapted to releasably attach to the apparatus housing and tightly fit about the lighthouse structure for removably anchoring the structure to the housing in a sealed relationship, providing a water-tight enclosure for the pentaprism beam diverting assembly and imposing a generally uniform attaching pressure about the lighthouse structure. A beam compensating lens aligned across the laser beam and coupled with the beam diverting assembly for movement therewith. The compensating lens being in the form of a positive meniscus lens is configured to correct the divergence in the laser beam which occurs when the beam passes through the one-piece molded lighthouse structure.

摘要翻译： 用于在参考平面中投射激光束的装置包括几个例子。 通常为圆柱形，一体式模制的透明灯塔结构覆盖设备的可旋转五棱镜光束转向组件。 灯塔结构安装在壳体上，以便允许由光束转向组件投影的旋转激光束的透射。 灯塔结构具有便于成型的锥形或圆锥形结构，但是当激光束通过结构时会产生发散。 连续的弹性柔性环适于可释放地附接到设备壳体并且紧密地配合在灯塔结构周围，以便以可密封的关系可移除地将结构固定到壳体，从而为五棱镜光束分流组件提供防水外壳，并施加一般 对灯塔结构均匀地附着压力。 光束补偿透镜对准跨越激光束并与光束转向组件耦合以与其一起运动。 正弯月形透镜形式的补偿透镜被配置为校正当光束通过一体式模制灯塔结构时发生的激光束中的发散。