公开(公告)号：US4533242A

公开(公告)日：1985-08-06

申请号：US425202

申请日：1982-09-28

申请人： John M. McLauchlan ,  John AuYeung ,  Eldred F. Tubbs ,  Willis C. Goss ,  Demetri Psaltis

发明人： John M. McLauchlan ,  John AuYeung ,  Eldred F. Tubbs ,  Willis C. Goss ,  Demetri Psaltis

IPC分类号： G01S17/10 ,  G01C3/08

CPC分类号： G01S17/10

摘要： A system is described for measuring the distance to an object by comparing a first component (18) of a light pulse that is reflected off the object (14), with a second component (20) of the light pulse that passes along a reference path (26) of known length, which provides great accuracy with a relatively simple and rugged design. The reference path (26) can be changed in precise steps so that is has an equivalent length approximately equal to the path length of the light pulse component that is reflected from the object. The resulting small difference in path lengths can be precisely determined by directing the light pulse components into opposite ends of a detector (70) formed of a material that emits a second harmonic light output at the locations where the opposite-going pulses pass simultaneously across one another.

摘要翻译： 描述了一种系统，用于通过将从物体（14）反射的光脉冲的第一分量（18）与通过参考路径的光脉冲的第二分量（20）进行比较来测量到物体的距离 （26），其具有相对简单和坚固的设计提供了高精度。 参考路径（26）可以精确地改变，使得具有近似等于从物体反射的光脉冲分量的路径长度的等效长度。 可以通过将光脉冲分量引导到由在相反的脉冲同时跨越一个的位置发射二次谐波光输出的材料形成的检测器（70）的相对端中来精确地确定所产生的小的路径长度差异 另一个。