| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for measuring the interior surface shape of an object in a noncontact manner of utilizing optical means, and to provide a measuring apparatus that uses the method. SOLUTION: The interior surface shape measuring method is intended for industrial products, having internal space, such as various kinds of pipes and engine blocks and the interior of living organs, such as human oral cavity. In order to measure the cross-sectional shape of the interior to be measured 3, a disc-shaped light beam Sb is irradiated at a predetermined position of the interior to be measured; the trace of light, indicating the interior shape due to the irradiation light Sb, is imaged by an imaging sensor 2 and the image data of the trace of light are accumulated; and the distance between the reference position of an imaging system, including the imaging sensor 2 and the interior surface to be measured 3, is calculated from the accumulated image data of the trace of light, to measure the shape Ip of the interior surface to be measured 3. COPYRIGHT: (C)2008,JPO&INPIT
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