- 专利标题： Calibration apparatus and calibrating a laser doppler vibrometer
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申请号： US17336964申请日： 2021-06-02
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公开(公告)号： US11906350B2公开(公告)日： 2024-02-20
- 发明人: Michael Gaitan , Jon Clement Geist , Benjamin James Reschovsky , Akobuije Douglas Eziani Chijioke
- 申请人： Government of the United States of America, as represented by the Secretary of Commerce
- 申请人地址： US MD Gaithersburg
- 专利权人： GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE
- 当前专利权人： GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE
- 当前专利权人地址： US MD Gaithersburg
- 代理机构： Office of Chief Counsel for National Institute of Standards and Technology
- 主分类号： G01H9/00
- IPC分类号： G01H9/00
摘要：
A calibration apparatus for calibrating a laser Doppler vibrometer includes: a frequency shifter stage that: receives, from the laser Doppler vibrometer, primary laser light; produces frequency shifted light; communicates the frequency shifted light to a reflector; receives frequency shifted light reflected by the reflector; produces secondary light; and communicates the secondary light to the laser Doppler vibrometer, such that the laser Doppler vibrometer receives the secondary light from the frequency shifter stage and produces a synthetic velocity shift from the secondary light; and the reflector that receives and reflects the frequency shifted light back to the frequency shifter stage.
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