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Image Measuring Instrument Calibration with Two-dimensional Optical Standard |
SUN Shuang-hua,XUE Zi,WANG He-yan |
National Institute of Metrology, Beijing 100029, China |
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Abstract According to JJF1318-2011 Calibration Specification for Imaging Probe Measuring Machines, the image measuring instrument calibration parameters and calibration method is analyzed. The traceability system of the image measuring instrument is introduced. A variety of specifications of the two-dimensional optical standard are designed, and the calibration procedures are expounded in detail. Length measurement error is tested by two-dimensional grid photomask and measurement data is analyzed. The measurement uncertainty is evaluated carefully, including its sources and values.
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