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1. 发明公开

EP0213468A3 Apparatus and method for analyzing particles in a medium 失效
标题翻译：用于分析中等颗粒的装置和方法
公开(公告)号：EP0213468A3
公开(公告)日：1987-07-29
申请号：EP86111073
申请日：1986-08-11
申请人： HITACHI, LTD.
发明人： Kitamori, Takehiko , Suzuki, Kazumichi , Sawada, Tsuguo
IPC分类号： G01N29/02 , G01N15/00
CPC分类号： G01N29/4454 , G01N15/10 , G01N21/1702 , G01N29/032 , G01N2291/02408 , G01N2291/02416 , G01N2291/02854
摘要： A medium (50) including particles (200) to be analyzed is contained in a cell through which excitation rays are passed. The excitation rays (100) are focused and have a predetermined wave form. A period in time of the excitation rays is set substantially equal to and preferably longer than the attenuation time of an acoustic pulse which is generated when the excitation rays are absorbed in the particle and when the particle release heat. The acoustic pulse is used to analyze particle size and number of particles.

2. 发明公开

EP0413330A3 Method and apparatus for detecting photoacoustic signal 失效
标题翻译：用于检测光电信号的方法和装置
公开(公告)号：EP0413330A3
公开(公告)日：1992-10-14
申请号：EP90115692.7
申请日：1990-08-16
申请人： HITACHI, LTD.
发明人： Nakata, Toshihiko , Kembo, Yukio , Sawada, Tsuguo , Kitamori, Takehiko
IPC分类号： G01N21/17 , G01N21/88 , G01N29/00 , G02B21/00
CPC分类号： G01N21/88 , G01N21/1702 , G01N2021/1765
摘要： Disclosed is a photoacoustic signal detecting apparatus and method. The photoacoustic signal detecting apparatus comprises a laser (31) emitting a laser beam, modulating means (32) for intensity-modulating the laser beam emitted from the laser to provide an intensity-modulated laser beam having a desired frequency, focusing means (39) for focusing the intensity-modulated laser beam on a sample (7) thereby inducing a photoacoustic effect inside the sample, detecting means (140) for detecting the photoacoustic effect in two-dimensional directions of the sample, composing means (160) for composing a two-dimensional photoacoustic image on the basis of the detected photoacoustic effect, information extracting means (160) for extracting surface and internal information of the sample from the two-dimensional photoacoustic image, scanning means (140) for two-dimensionally scanning the laser beam from the sample or the laser, computing means (68) for computing a thermal impulse response of the sample, computing means (68) for computing, on the basis of the thermal impulse response, an inverse filtering factor for compensating degradation of the resolution of the photoacoustic image, and means (68) for applying the computed inverse filtering factor to the detected photoacoustic image.

3. 发明公开

EP0413330A2 Method and apparatus for detecting photoacoustic signal 失效
标题翻译： Verfahren undGerätzur Erfassung eines photoakustischen信号。
公开(公告)号：EP0413330A2
公开(公告)日：1991-02-20
申请号：EP90115692.7
申请日：1990-08-16
申请人： HITACHI, LTD.
发明人： Nakata, Toshihiko , Kembo, Yukio , Sawada, Tsuguo , Kitamori, Takehiko
IPC分类号： G01N21/17 , G01N21/88 , G01N29/00 , G02B21/00
CPC分类号： G01N21/88 , G01N21/1702 , G01N2021/1765
摘要： Disclosed is a photoacoustic signal detecting apparatus and method. The photoacoustic signal detecting apparatus comprises a laser (31) emitting a laser beam, modulating means (32) for intensity-modulating the laser beam emitted from the laser to provide an intensity-modulated laser beam having a desired frequency, focusing means (39) for focusing the intensity-modulated laser beam on a sample (7) thereby inducing a photoacoustic effect inside the sample, detecting means (140) for detecting the photoacoustic effect in two-dimensional directions of the sample, composing means (160) for composing a two-dimensional photoacoustic image on the basis of the detected photoacoustic effect, information extracting means (160) for extracting surface and internal information of the sample from the two-dimensional photoacoustic image, scanning means (140) for two-dimensionally scanning the laser beam from the sample or the laser, computing means (68) for computing a thermal impulse response of the sample, computing means (68) for computing, on the basis of the thermal impulse response, an inverse filtering factor for compensating degradation of the resolution of the photoacoustic image, and means (68) for applying the computed inverse filtering factor to the detected photoacoustic image.
摘要翻译：公开了一种光声信号检测装置及方法。光声信号检测装置包括发射激光束的激光器（31），用于强度调制从激光器发射的激光束的调制装置（32），以提供具有期望频率的强度调制激光束，聚焦装置（39）用于将强度调制的激光束聚焦在样品（7）上，从而在样品内引起光声效应，用于检测样品的二维方向的光声效应的检测装置（140），用于构成样品基于检测到的光声效应的二维光声图像，用于从二维光声图像提取样品的表面和内部信息的信息提取装置（160），用于二维扫描激光束的扫描装置（140）来自样本或激光器的计算装置（68），用于计算样本的热脉冲响应;计算装置（68），用于基于所述样本误差脉冲响应，用于补偿光声图像的分辨率劣化的逆滤波因子，以及用于将所计算的逆滤波因子应用于检测到的光声图像的装置（68）。

4. 发明授权

EP0213468B1 Apparatus and method for analyzing particles in a medium 失效
标题翻译：用于分析中等颗粒的装置和方法
公开(公告)号：EP0213468B1
公开(公告)日：1990-10-24
申请号：EP86111073.2
申请日：1986-08-11
申请人： HITACHI, LTD.
发明人： Kitamori, Takehiko , Suzuki, Kazumichi , Sawada, Tsuguo
IPC分类号： G01N29/02 , G01N15/00
CPC分类号： G01N29/4454 , G01N15/10 , G01N21/1702 , G01N29/032 , G01N2291/02408 , G01N2291/02416 , G01N2291/02854

5. 发明公开

EP0213468A2 Apparatus and method for analyzing particles in a medium 失效
标题翻译： Vorrichtung und Verfahren zur分析von Teilchen在einem Mittel。
公开(公告)号：EP0213468A2
公开(公告)日：1987-03-11
申请号：EP86111073.2
申请日：1986-08-11
申请人： HITACHI, LTD.
发明人： Kitamori, Takehiko , Suzuki, Kazumichi , Sawada, Tsuguo
IPC分类号： G01N29/02 , G01N15/00
CPC分类号： G01N29/4454 , G01N15/10 , G01N21/1702 , G01N29/032 , G01N2291/02408 , G01N2291/02416 , G01N2291/02854
摘要： A medium (50) including particles (200) to be analyzed is contained in a cell through which excitation rays are passed. The excitation rays (100) are focused and have a predetermined wave form. A period in time of the excitation rays is set substantially equal to and preferably longer than the attenuation time of an acoustic pulse which is generated when the excitation rays are absorbed in the particle and when the particle release heat. The acoustic pulse is used to analyze particle size and number of particles.
摘要翻译：包含要分析的颗粒（200）的介质（50）被包含在通过激发光线的单元中。激发光线（100）被聚焦并具有预定的波形。将激发光线的时间段设定为基本上等于并且优选地长于当激发光线在粒子中被吸收时以及当粒子释放热量时产生的声脉冲的衰减时间。声脉冲用于分析颗粒大小和颗粒数。

6. 发明授权

EP0413330B1 Method and apparatus for detecting photoacoustic signal 失效
标题翻译：用于检测光声信号的方法和装置。
公开(公告)号：EP0413330B1
公开(公告)日：1995-11-02
申请号：EP90115692.7
申请日：1990-08-16
申请人： HITACHI, LTD.
发明人： Nakata, Toshihiko , Kembo, Yukio , Sawada, Tsuguo , Kitamori, Takehiko
IPC分类号： G01N21/17 , G01N21/88 , G01N29/00 , G02B21/00
CPC分类号： G01N21/88 , G01N21/1702 , G01N2021/1765

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