{"id":58768,"date":"2024-12-17T14:22:05","date_gmt":"2024-12-17T06:22:05","guid":{"rendered":"https:\/\/jiahon.com.tw\/?post_type=product&p=58768"},"modified":"2026-04-08T13:46:48","modified_gmt":"2026-04-08T05:46:48","slug":"qa-%e6%95%b8%e4%bd%8d%e9%a1%af%e5%be%ae%e9%8f%a1%e7%9a%84%e8%aa%a4%e5%b7%ae%e5%8f%8a%e6%a0%a1%e9%a9%97%e5%95%8f%e9%a1%8c","status":"publish","type":"product","link":"https:\/\/jiahon.com.tw\/en\/product\/qa-%e6%95%b8%e4%bd%8d%e9%a1%af%e5%be%ae%e9%8f%a1%e7%9a%84%e8%aa%a4%e5%b7%ae%e5%8f%8a%e6%a0%a1%e9%a9%97%e5%95%8f%e9%a1%8c\/","title":{"rendered":"
Q&A: Errors and Calibration Issues of Digital Microscopes<\/h5>(from JH Engineering Department)"},"content":{"rendered":"

The overall operation and measurement logic of the digital microscope are as follows:<\/strong><\/h4>\n
    \n
  1. After adjusting the focus, the operator should locate the exact object to be measured.<\/li>\n
  2. The operator uses the mouse to click on the starting point and endpoint of the object to be measured (with the horizontal distance in between also affecting the length).<\/li>\n
  3. At this point, the computer calculates how many pixels this length occupies in the entire screen.<\/li>\n
  4. Before leaving the factory, it was calibrated that 1 pixel equals a certain number of millimeters. The computer then calculates and reports the measured value on the screen.<\/li>\n<\/ol>\n

    Review the overall process above.<\/p>\n

    The calibration only informs the computer of the value of 1 pixel = a certain number of millimeters. If the operator does not specifically access this page, the value does not need to be recalibrated (it remains a fixed value).<\/p>\n

    \u6574\u9ad4\u91cf\u6e2c\u8aa4\u5dee\u518d\u65bc\uff1a<\/strong><\/h5>\n
      \n
    1. Individual focus differences: For example, with components; components have a certain thickness, so each person may perceive the edge differently (different focal lengths lead to different perceived edges).<\/li>\n
    2. When individuals click the mouse, the starting and ending points they select may differ.<\/li>\n
    3. According to the GRR (Gage Repeatability and Reproducibility) measurement method, there are two issues:\n
        \n
      1. \u8a2d\u5099\u91cd\u8907\u6027\u554f\u984c<\/li>\n
      2. The issues are equipment repeatability and operator repeatability.<\/li>\n<\/ol>\n<\/li>\n
      3. \u6b64\u8a2d\u5099\u4eba\u54e1\u91cd\u8907\u6027\u7684\u554f\u984c\u662f\u660e\u986f\u5927\u65bc\u8a2d\u5099\u91cd\u8907\u6027\u554f\u984c\u7684<\/li>\n<\/ol>\n
        \u6545\u6b64\uff0c\u6b64\u8a2d\u5099\u4e4b\u91cf\u6e2c\u503c\uff0c\u57fa\u672c\u4e0a\u662f\u4ee5\u80fd\u63d0\u4f9b\u4e00\u500b\u6578\u64da\u503c\u70ba\u4e3b<\/p>\n

        (\u4e5f\u5c31\u662f, \u7576\u6211\u5011\u8aaadefect\u6709\u591a\u5927, \u7121\u6cd5\u7d66\u500b\u6578\u503c)<\/h5>\n

          \n
        • However, this equipment is not intended for precise measurements.<\/li>\n
        • As shown in the image below, the idea we want to convey is similar to this (not for transactional use); however, in practice, the operator repeatability issue with the electronic scale is much smaller than this.\n

          \"\"<\/li>\n<\/ul>\n

          Summary:<\/p>\n

          <\/strong>The issues mentioned above are typically addressed in general electronics factories by:<\/h5>\n

            \n
          • Using a well-known caliper (such as Mitutoyo), placed under the lens, for routine measurements.\n

            If no significant differences are observed after inspection, then there is no issue.<\/li>\n

          • If there is a significant discrepancy, calibration can be re-done using a calibration plastic sheet or glass plate.\n

            video operation<\/li>\n<\/ul>\n