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81.发明授权Ranging system which compares an object-reflected component of a light beam to a reference component of the light beam 失效将光束的物体反射分量与光束的参考分量进行比较的测距系统
公开(公告)号：US4533242A
公开(公告)日：1985-08-06
申请号：US425202
申请日：1982-09-28
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。
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公开(公告)号：US4308521A
公开(公告)日：1981-12-29
申请号：US11585
申请日：1979-02-12
申请人： David P. Casasent , Demetri Psaltis
发明人： David P. Casasent , Demetri Psaltis
CPC分类号： G06K9/82
摘要： A multiple-invariant, space variant optical processor in which two functions described by any number of separate distortion parameters can be correlated with no loss in signal-to-noise ratio of the correlation. The unknown distortion parameters can also be determined in this scheme. Experimental confirmation of the key step, determination of the non-linear phase portion of a complex optical transform can be provided.
摘要翻译： 一种多不变的空间变异光学处理器，其中通过任何数量的分离的失真参数描述的两个功能可以与相关的信噪比没有损失相关联。 未知的失真参数也可以在该方案中确定。 可以提供关键步骤的实验确认，确定复杂光学变换的非线性相位部分。
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