Image measuring instrument belongs to precision instruments, reduce the error is our common goal. To reduce the error to understand the sources of error:

Measurements in the image measuring instrument aremeasured with single axis or plane coordinatemeasurement, when the first focus, after the alignment,and then reading (count), the final processing. Readingfrom the scale that grating system, focusing on rely on microscopic optical system, and a direct impact on the measurement results and precision of the illumination light source, because the instrument, image measurement based approach, if the measured cannot be effectivelycorrect lighting, measured results obviously deviated from its true size. In addition to the aforementioned factors,environmental factors also restrict the accuracy of measurement conditions can not be ignored.

Based on the above analysis, can be summed up the following aspects of error sources:

1) error of grating counting ruler;

There are 2) when the worktable moves straightness,angle error;

3) the error table two measuring verticality of axis with the;

4) optical axis of microscope with the work surface is not vertical error band;

5) error measurement chamber temperature from 20 ℃ to bring reference temperature;

6) focus changes brought about by the illuminationcondition and the alignment error.

Yuanxing provide the above error sources, customers pay attention to the above points, let us work together tocomplete the precision instrument dream.