公开(公告)号：US5883713A

公开(公告)日：1999-03-16

申请号：US931421

申请日：1997-09-16

申请人： John E. Davis ,  Marion Todd

发明人： John E. Davis ,  Marion Todd

IPC分类号： G01J3/453 ,  G01B9/02

CPC分类号： G01J3/4537

摘要： A Fourier transform interferometer for rapid scanning of scenes such as explosions wherein an incoming beam of light to be analyzed is split by a beam splitter into a first portion and a second portion. The first portion of the incoming light is sent down one arm of the interferometer where it passes through a rotating scanning cube for changing the path length in that arm of the interferometer. The light is then reflected by a retro mirror and sent back through the scanning cube to the beam splitter for sending a portion of the returning beam to a detector. The second portion of the incoming light is sent down a second arm of the interferometer where it passes through a compensator. The light is then reflected by a retro mirror and sent back through the compensator to the beam splitter for sending a portion of the returning beam to a detector. The first and second portions of the incoming light having differing path lengths interfere and the detector measures the fringes created.

摘要翻译： 一种用于快速扫描诸如爆炸的场景的傅里叶变换干涉仪，其中待分析的入射光束被分束器分裂成第一部分和第二部分。 入射光的第一部分被传送到干涉仪的一个臂上，在其中它通过旋转扫描立方体，以改变干涉仪臂中的路径长度。 然后光被后视镜反射并通过扫描立方体返回到分束器，以将一部分返回光束发送到检测器。 入射光的第二部分沿干涉仪的第二臂向下传送，其中它通过补偿器。 然后光被后视镜反射并通过补偿器返回到分束器，以将一部分返回光束发送到检测器。 具有不同路径长度的入射光的第一和第二部分干涉并且检测器测量所产生的边缘。