公开(公告)号：US3891797A

公开(公告)日：1975-06-24

申请号：US42756573

申请日：1973-12-26

申请人： MC DONNELL DOUGLAS CORP

发明人： FINNELL JOSEPH C

IPC分类号： G01B11/28 ,  G01B19/58 ,  H04N7/18

CPC分类号： G01B11/285

摘要： A system capable of accurately and rapidly measuring irregular areas such as the aggregate plating surfaces of a printed circuit board or the minimum throat opening cross section of a fired rocket engine nozzle is disclosed. The system broadly and illustratively comprises a light source for illuminating a photographic negative (or positive) of the region under consideration, a television camera for viewing and scanning the illuminated negative, a calculator responsive to the video output signal of the camera and providing grouped digital signals representative of incremental portions of the irregular area being measured, and a counter for counting the digital signals and displaying the total count which is a direct measure of the irregular area.

摘要翻译： 公开了能够准确且快速地测量诸如印刷电路板的聚集电镀表面或烧制的火箭发动机喷嘴的最小喉部开口横截面的不规则区域的系统。 该系统广泛且示意性地包括用于照亮所考虑的区域的照相负（或正）的光源，用于观察和扫描照明的负片的电视摄像机，响应于照相机的视频输出信号的计算器，并且提供分组的数字 表示被测量的不规则区域的增量部分的信号，以及用于对数字信号进行计数并显示作为不规则区域的直接测量的总计数的计数器。