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Birefringent Analysis of Plastic Lens Injection Molding for Mobile Phone Camera

핸드폰 카메라용 플라스틱 렌즈 사출서형의 복굴절 해석

  • 이시욱 (CAEPRO(주), 서울과학기술대학교 제품설계금형공학과) ;
  • 조형한 (N2A(주), 서울과학기술대학교 제품설계금형공학과) ;
  • 홍진수 (서울과학기술대학교 NID융합기술대학원) ;
  • 류민영 (서울과학기술대학교 제품설계금형공학과)
  • Received : 2010.12.27
  • Accepted : 2011.01.14
  • Published : 2011.02.01

Abstract

Optical properties in injection molded plastic lenses for mobile phone camera have been simulated using commercial program, 3D TIMON. Four plastic lenses are being used in mobile phone camera. The quality of photographs taken by mobile phone camera is strongly depends upon optical characteristics of lenses. The variety of optical properties has been investigated according to the injection conditions through the computer simulation. Consequently optimal injection conditions for four lenses have been determined and simulation results of birefringence have been compared with experiments.

Keywords

References

  1. Dominick V. Rosato, Donald V. Rosato, Marlene G. Rosato, 2000, Injection Molding Handbook 3rd ed, Kluwer Academic Publishers, Massachusetts, pp. 1-27.
  2. M. A. Kang, M.-Y. Lyu, 2008, Investigation of the Filling Unbalance and Dimesional Vairations in Multi-Cavity Injection Molded Parts, Polym. Kor., 32, pp. 501-508.
  3. C. Liu, L. T. Manzione, 1996, Process studies in precision injection molding. I: Process parameters and precision, Polym. Eng. Sci., 36, No. 1, pp. 1-9. https://doi.org/10.1002/pen.10378
  4. V. Pitotter, K. Mueller, K. Plewa, R. Ruprecht, J. Hausselt, 2002, Performance and simulation of thermoplastic micro injection molding, Microsyst. Technol., 8, pp. 387-390. https://doi.org/10.1007/s00542-002-0178-6
  5. M.-Y. Lyu, H.-Y. Kim, 2009, Introduction to polymer shaping processes and their principles, Polym. Sci. Technol., 20, No. 2, pp. 157-169.
  6. W. Dietz, J. L. White, E. S. Clark, 1978, Orientation development and relaxation in injection molding of amorphous polymers, Polym. Eng. Sci., 18, No. 4, pp. 273-281. https://doi.org/10.1002/pen.760180407
  7. H. Janeschitz-Kriegl, 1977, Injection moulding of plastics: some ideas about the relationship between mould filling and birefringence, Rheol. Acta, 16, No. 4, pp. 327-339. https://doi.org/10.1007/BF01534086
  8. F. P. T. Baaijens, 1991, Calculation of residual stresses in injection molded products, Rheol. Acta, 30, No. 3, pp. 284-299. https://doi.org/10.1007/BF00366642
  9. T. S. Kwak, H. Ohmori, 2005, Verification for transcription of spherical radius and prediction of birefringence in injection molding optical lens, J. of the Kor. Soc. for Precision Eng., 22, No. 6, pp. 55-60.
  10. Instructions for using PS-100-SF Polarimeter, Strainoptics, Inc.
  11. J. L. S. Wales, W. Philippoff, 1973, The anisotrophy of simple shearing flow, Rheol. Acta, 12, pp. 25-34. https://doi.org/10.1007/BF01526896

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  2. Aspherical Lens Design and Injection Mold Analysis Using Extracted Shape Information vol.24, pp.6, 2015, https://doi.org/10.5228/KSTP.24.6.437
  3. A Development of Feature Extraction and Condition Diagnosis Algorithm for Lens Injection Molding Process vol.31, pp.11, 2014, https://doi.org/10.7736/KSPE.2014.31.11.1031