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1. 发明授权

US5557395A Optical device for measuring speed 失效
公开(公告)号：US5557395A
公开(公告)日：1996-09-17
申请号：US141644
申请日：1993-10-27
申请人： Tetuya Uno , Junichi Takagi , Yasunobu Sakai
发明人： Tetuya Uno , Junichi Takagi , Yasunobu Sakai
IPC分类号： G01P3/36 , G01S17/58 , B60T7/16
CPC分类号： G01P3/36 , G01S17/58
摘要： A device for measuring the speed of an object. The device includes a spatial filter scheme to provide quick-response photodetectors and an efficient use of light. The device projects light onto the object by a light source 1, and the light reflected by the object is received by a lens. This light passes through aperture stop 4 and strikes prism array 7, where it is split alternately into two paths at a fixed pitch with respect to the optical axis. The two split beams are received respectively by two photodetectors. The speed of the object moving relative to the measuring device can be calculated based on the data collected by photodetectors.

2. 发明授权

US06043869A Optical device for measuring speed 失效
标题翻译：用于测量速度的光学装置
公开(公告)号：US06043869A
公开(公告)日：2000-03-28
申请号：US710327
申请日：1996-09-16
申请人： Tetuya Uno , Junichi Takagi , Yasunobu Sakai
发明人： Tetuya Uno , Junichi Takagi , Yasunobu Sakai
IPC分类号： G01P3/80 , G01P3/36 , B60T7/16
CPC分类号： G01P3/806
摘要： A device for measuring the speed of an object. The device includes a spatial filter scheme to provide quick-response photodetectors and an efficient use of light. The device projects light onto the object by a light source 1, and the light reflected by the object is received by a lens. This light passes through aperture stop 4 and strikes prism array 7, where it is split alternately into two paths at a fixed pitch with respect to the optical axis. The two split beams are received respectively by two photodetectors. The speed of the object moving relative to the measuring device can be calculated based on the data collected by photodetectors.
摘要翻译：用于测量物体速度的装置。该装置包括空间滤波器方案以提供快速响应光电检测器和有效利用光。该装置通过光源1将光投射到物体上，并且由物体反射的光被透镜接收。该光通过孔径光阑4并撞击棱镜阵列7，在该棱镜阵列7处，它以相对于光轴的固定间距交替地分成两条路径。两个分离光束分别由两个光电检测器接收。物体相对于测量装置移动的速度可以基于由光电检测器收集的数据来计算。

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