Evaluation of surface smoothness by a laser displacement sensor II: comparison of lateral effect photodiode and multielement array

  title={Evaluation of surface smoothness by a laser displacement sensor II: comparison of lateral effect photodiode and multielement array},
  author={Jakub Sandak and Chiaki Tanaka and Tadashi Ohtani},
  journal={Journal of Wood Science},
Development of accurate surface assessment technology is of vital interest to modern wood industries. In this experiment we investigated new and fast noncontacting sensors to determine their usefulness for wood surface evaluation and to verify their accuracy. Two types of laser displacement sensors [equipped with a position sensitive detector (PSD) and a charge coupled device (CCD) detector] are compared with a conventional stylus and with theoretical profiles. Hornbeam workpieces with… CONTINUE READING


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