What effect does light illumination have on the two-dimensional measuring instrument?

What effect does light illumination have on the two-dimensional measuring instrument? Post time: 2020-03-13 Source: https://www.microaccuracy.com/ The two-dimensional measuring instrument is a very precise measuring instrument and equipment, so its internal precision parts are easily affected by many factors. One of the important elements, what effect does lighting have on the two-dimensional measuring instrument? The structure principle of the two-dimensional measuring instrument: The two-dimensional measuring instrument is mainly composed of six parts: mechanics, optics, image acquisition, computer processing and measurement software, and uses optical images to achieve precise measurement. The principle of optical measurement is that the contour image of the measured part is received by the CCD sensor and the image is collected and processed by the computer, so the light source has an important influence on the image of the measured part. The influence of light illumination on measurement: In actual measurement, when the lighting condition of the light source changes, it directly affects the illumination effect and image quality of the measured workpiece, mainly because the image of the two-dimensional measuring instrument is received through CCD, although the CCD has automatic adjustment The function of gain, but when the brightness is too high, the adjustment function will be lost, which causes the image of the measured workpiece to shrink. When the brightness is too low, the image of the workpiece becomes larger. It is not appropriate to measure the geometric size of the workpiece sample structure by image Light will cause a large error. This effect can be ignored when measuring the distance between repeated pattern structures, as long as the lighting conditions remain unchanged during the entire measurement process, because each repeated pattern structure is getting larger or smaller at the same time. The calculation directly eliminates the influence of image distortion. Except for this special case, such as measuring the diameter of the circle, the length and width of the workpiece, will bring obvious errors. The change of lighting conditions will directly affect the measured size, so in order to ensure the accuracy of the measurement, appropriate lighting conditions must be selected. Miaoji Technology has been focusing on the Ru0026D and production of precision measuring equipment for many years. At present, it can provide a variety of high-performance two-dimensional measuring instruments, one-button measuring instruments and other equipment!