公开(公告)号：US3633996A

公开(公告)日：1972-01-11

申请号：US3633996D

申请日：1970-03-04

Applicant: IBM

Inventor： LEAN ERIC G ,  POLE ROBERT V ,  TSENG SAMUEL C

IPC: G02F1/33 ,  G02F1/16

CPC classification number: G02F1/33

Abstract: A system for deflecting a light beam in two dimensions is described. The system includes a piezoelectric crystal having an acoustic surface wave transducer on its surface for propagating acoustic surface waves on the crystal. Means are provided for applying a nonuniform electric field to the crystal to vary the effective stiffness constant of the crystal in a nonuniform manner. When a beam of laser light is directed onto the crystal it is deflected in one dimension as a function of the frequency of the acoustic wave produced by the transducer and in a second dimension as a function of the nonuniform electric field.

Abstract translation: 描述了一种用于在两个维度上偏转光束的系统。 该系统包括在其表面上具有声表面波换能器的压电晶体，用于在晶体上传播声表面波。 提供了用于向晶体施加不均匀电场的装置，以不均匀的方式改变晶体的有效刚度常数。 当激光束被引导到晶体上时，其作为由换能器产生的声波的频率的函数在一维中被偏转，并且在作为不均匀电场的函数的第二维度中被偏转。