A Study Birefringence of Injection Molding for Plastics Aspheric Lens

플라스틱 비구면 사출렌즈의 복굴절에 관한 연구

  • 전유태 (한국산업기술대학교 지식기반기술에너지 대학원) ;
  • 현동훈 (한국산업기술대학교 나노광공학과)
  • Published : 2006.02.01

Abstract

A Study of birefringence in an aspheric lens of injection molding became more important to improve its optical properties. In the present study, the experimental study was carried out to investigate the relationship between birefringence and injection molded conditions. The processing factors are conditions include packing pressure, packing time, injection speed, melt temperature of optical resin and wall temperature. Birefringence was observed figures by using a polarizer in light. This experiments were carried out using the simulation software and injection molding machine.

Keywords

References

  1. Mazuda, K., Tamura, I., 1984, 'Injection & Compression Molding For Plastic Lens Fabrication,' 4th Japan RETEC
  2. Lee, S., Javier, D. L. V., and Donald, C. B., 1986, 'residual Stresses and Birefringences in Large, Quenched Samples,' Journal of Applied Polymer Science, Vol. 31, pp. 2791-2803 https://doi.org/10.1002/app.1986.070310832
  3. Winberger, F., R. and De Bruin, J. G., 1993., 'Birefringence in Polycarbonate : Molecular Orientation Induced by Cooling Stress. I,' Journal of Polymer Science, Vol. 31, pp. 1041-1049
  4. Winberger, F., R. and De Bruin, J. G., 1993, 'Birefringence in Polycarbonate : Molecular Orientation Induced by Cooling Stress. II,' Journal of Polymer Science, Vol. 31, pp. 1051-1060
  5. Lee, Y. B., Kwon, T. H. and Yoon, K.H., 2002, 'Numerical Prediction of Residual Stresses and Birefringence in Injection/Compression Molded Center-Gated Disk,' Polym. Eng. Sci., Vol. 42