Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on the Birefringence Measurement in Injection Molded Parts Using R-G-B Separation of White Light

백색광의 삼파장 분해에 의한 2차원 복굴절측정 장치의 개발에 관한 연구

  • 윤경환 (단국대학교 기계공학과) ;
  • 김종선 (단국대학교 대학원 기계공학과)
  • Published : 2005.06.01
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Abstract

Recently, injection molded plastic optical products are widely used in many fields, because injection molding process has advantages of low cost and high productivity. However, there remains residual birefringence and residual stresses originated from flow history and differential cooling. The present study focused on developing a technique to measure the birefringence in optical plastic parts using R-G-B separation of white light. The main idea of an analysis comes from the fact that more information can be obtained from the distribution of retardation caused by different wavelengths. A complete system to give the quantitative values of retardation covering high order 2-D birefringence will be demonstrated. Further investigation is under way to improve the accuracy of the system using diodes as light sources.

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References

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