Uni-axial measurement of three-dimensional surface profile by liquid crystal digital shifter

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説明

A uni-axial measurement of three dimensional surface profiles by a liquid crystal digital shifter is proposed using a telecentric optical system. Height information is captured by measuring the contrast in the projected pattern. A shadow less measurement of the object's area is archived by using a uni-axial system. The magnification of the object image captured by a CCD camera is made constant by changing the focus distance. The liquid crystal digital shifter is a powerful tool to make arbitrary intensity and frequency distribution. Surface profiles of mechanical parts were measured to demonstrate this method.

収録刊行物

詳細情報 詳細情報について

  • CRID
    1871991018111368704
  • DOI
    10.1117/12.861561
  • ISSN
    0277786X
  • データソース種別
    • OpenAIRE

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