发明名称 |
CONTROL APPARATUS AND METHOD FOR ELECTROMECHANICAL TRANSDUCER DEVICE, AND MEASUREMENT SYSTEM |
摘要 |
<p>There is a case in which a generated acoustic wave is decreased owing to the attenuation of light, whereby a desired output is not obtained from an electromechanical transducer device that receives the acoustic wave. The control apparatus for controlling an electromechanical transducer device of the present invention includes: a conversion unit that converts a current output from a first electrode of the electromechanical transducer device to a voltage; a DC voltage applying unit that applies a DC voltage to a second electrode arranged with a gap between itself and the first electrode; and a generation unit that generates a control signal which makes at least one of the DC voltage and a conversion ratio for converting the current to the voltage be changed, on the basis of information about an elapsed time from a point in time at which an inspection object was irradiated with light.</p> |
申请公布号 |
EP2501497(A1) |
申请公布日期 |
2012.09.26 |
申请号 |
EP20100790796 |
申请日期 |
2010.11.11 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KANDORI, ATSUSHI;MAJIMA, MASAO |
分类号 |
B06B1/02;G01N21/17;G01N29/24 |
主分类号 |
B06B1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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