发明名称 |
Method and apparatus for measuring a three-dimensional curved surface shape. |
摘要 |
<p>A method and apparatus adapted to measure a three-dimensional curved surface shape quantitatively with high speed. A pattern of interference fringes on a surface of an object to be measured is picked up so that while moving a reference plane (or the object to be measured) in the direction of an optical axis, the resulting video signal is processed to form a composite image in which a value of each of picture elements is represented by a position of the reference plane (or a position of the object to be measured) at an instant that one of positions on the object surface corresponding to that picture element in the image attains a maximum brightness. Then, a three-dimensional curved surface shape of the object to be measured is measured on the basis of the composite image.</p> |
申请公布号 |
EP0342289(A2) |
申请公布日期 |
1989.11.23 |
申请号 |
EP19880309658 |
申请日期 |
1988.10.14 |
申请人 |
NKK CORPORATION |
发明人 |
UESUGI, MITSUAKI;INOMATA, MASAICHI;KOMINE, ISAMU |
分类号 |
G01B11/24 |
主分类号 |
G01B11/24 |
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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