发明名称 |
Temperature distribution measuring method and apparatus |
摘要 |
Method and apparatus for measuring a surface temperature of an object body, by calculating a temperature at each picture element of an image of the object body, on the basis of a radiant intensity ratio at each pair of corresponding picture elements of a first and a second image which are obtained with respective radiations having respective first and second wavelengths which are selected from a light emitted from the surface of the body, by a first filter which permits transmission therethrough a radiation having the first wavelength which is selected according to a radiant-intensity curve corresponding to a wavelength of a black body at a lower limit of a temperature measurement range, and which is within a high radiant-intensity range in which the radiant intensity is higher than a radiant intensity at a normal room temperature, and a second filter which permits transmission therethrough a radiation having the second wavelength which is selected within the high radiant-intensity range, such that the second wavelength is different from the first wavelength by a predetermined difference which is not larger than {fraction (1/12 of the first wavelength and which is not smaller than a sum of half widths of the first and second wavelengths.
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申请公布号 |
US2004001525(A1) |
申请公布日期 |
2004.01.01 |
申请号 |
US20020184957 |
申请日期 |
2002.07.01 |
申请人 |
NORITAKE CO., LIMITED;KUNIYUKI KITAGAWA |
发明人 |
YANO KENJI;IWATA MISAO;HASHIMOTO MIYUKI;KITAGAWA KUNIYUKI;ARAI NORIO;ARAI SATOSHI |
分类号 |
G01J5/00;G01J5/48;G01J5/60;(IPC1-7):G01J5/00 |
主分类号 |
G01J5/00 |
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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