发明授权
- 专利标题： Precision optical displacement measurement system
- 专利标题（中）： 精密光学位移测量系统
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申请号： US822556申请日： 1997-03-19
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公开(公告)号： US5737085A公开(公告)日： 1998-04-07
- 发明人: Byron G. Zollars , Robert C. Chin , Gary B. McMillian , Tommy C. Cruce , William H. Hallidy
- 申请人： Byron G. Zollars , Robert C. Chin , Gary B. McMillian , Tommy C. Cruce , William H. Hallidy
- 申请人地址： TX Austin
- 专利权人： Systems & Processes Engineering Corporation
- 当前专利权人： Systems & Processes Engineering Corporation
- 当前专利权人地址： TX Austin
- 主分类号： G01B11/02
- IPC分类号： G01B11/02 ; G01S17/36 ; G01B11/24
摘要：
Apparatus and method for measuring the relative distance between different areas on a remote surface or displacements of a selected area of a remote surface with respect to a measuring apparatus are provided. A laser beam is modulated at an RF frequency and focused on a selected area. The selected area is scanned by movement of a mirror and at each selected area the phase difference is measured. Digital data processing of signals derived from the source and return beams is used to provide high precision. For detecting or measuring vibration or displacement, an analog signal is obtained from a low-pass filter.
公开/授权文献
- USD351349S Sports watch 公开/授权日：1994-10-11