Several main lighting methods of image measuring instrument
Several main lighting methods of image measuring instruments. As we all know, the image measuring instrument is a kind of precision measuring instrument, and many users use it, but these are not the key. The key is that the installation of the image measuring instrument is the general point of subsequent use. Let's take a look at the installation method after the user purchases. After the user purchases a new image measuring instrument, it is usually installed and tested by the supplier before starting to use it, but as a user, they must more or less know how to install it and how to Operate it. Because the image measuring instrument is a kind of precision equipment, if it is installed incorrectly, it will inevitably affect its measurement results. The lighting of the image measuring instrument has always been a more critical issue. The lighting is a very critical link in the entire measurement process. It plays a vital role in measuring various values u200bu200bof the measured object. When it comes to the illumination of image measuring instruments, there are actually several illumination methods. Let us look at them below. The main illumination methods of the image measuring instruments include surface ring light illumination, coaxial light illumination and contour light illumination. Surface ring light illumination and contour light illumination are two more common illumination methods, which are a method of illuminating special workpieces. Coaxial illumination mainly measures the width of cylindrical annular groove and the measurement of thread profile. The surface annular illumination method of image measuring instrument can easily realize the surface size of the workpiece and the light source used for blind hole measurement. The surface reflection has a very unique effect. Because the surface light uses a surface light source, it can provide general illumination for the surface of the workpiece.
At present, the image measuring instrument has used a circular surface light to provide surface illumination in multiple directions and incident angles. The image measuring instrument uses the contour light illumination method, where the light source is placed on the back of the object. This illumination method It is very different from other lighting methods, because image analysis is not reflected light but incident light. Contour light illumination produces strong contrast. The important point of contour light is to ensure that the emitted light is parallel light to ensure that different intensities of light are not It will cause changes in the contour of the workpiece, which will affect the accuracy of the measurement.
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