| 摘要 |
PURPOSE: A device for measuring flatness for a rear plate is provided to reduce working time required for measuring the flatness of the rear plate and to improve the accuracy of the measurement. CONSTITUTION: A device for measuring flatness for a rear plate comprises a mounting unit(30), a rotating unit(40), a light radiation unit(50), and a measurement target unit(60). The mounting unit is installed in a rear plate and comprises a sub-control unit(36) exchanging data with a main control unit(80). The rotating unit is installed in the mounting unit and comprises a moving member(46) being rotated. The light radiation unit is rotated with the rotating unit and radiates lights. The measurement target unit is installed in the rear plate by being spaced from the mounting unit and receives the lights radiated from the light radiation unit, thereby transmitting a measurement value to the sub-control unit.
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