发明名称 |
Optical system for measuring diameter, distribution and so forth of micro bubbles and micro liquid drop |
摘要 |
The present invention expands a method of measuring the diameter, spatial distribution and so forth of micro liquid droplets by measuring the diameter of each out-of-focus image obtained by defocusing and the number of interference fringes in the out-of-focus image into a measuring method for micro gas bubbles and allows the method to be applied to a case where the spatial distribution density of micro liquid droplets and micro gas bubbles is high. A sheet-shaped parallel laser beam (2) is applied to a liquid space in which micro gas bubbles (10) are floating, and out-of-focus images of micro gas bubbles (10) irradiated with the laser beam (2) are captured at a defocus plane (8) through an objective lens (6) from a lateral direction which is at an angle theta to the direction of travel of the laser beam. The number of interference fringes (9) in an out-of-focus image (10'') corresponding to a micro gas bubble (10) is measured, and the diameter of the micro gas bubble (10) is determined according to equation (4).
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申请公布号 |
US6587208(B2) |
申请公布日期 |
2003.07.01 |
申请号 |
US20010926112 |
申请日期 |
2001.09.04 |
申请人 |
KEIO UNIVERSITY |
发明人 |
MAEDA MASANOBU;KAWAGUCHI TATSUYA |
分类号 |
G01B11/00;G01B11/08;G01N15/00;G01N15/02;G01N15/14;G01P5/18;(IPC1-7):G01B9/02 |
主分类号 |
G01B11/00 |
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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