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http://dx.doi.org/10.5228/KSPP.2007.16.1.025

Evaluation of Optical Performance for an Aspheric Lens Connecting with FE Analysis of Injection Molding  

Park, K. (서울산업대학교 기계설계 자동화공학부)
Um, H.J. (서울산업대학교 기계설계 자동화공학부 대학원)
Kim, J.P. (서울산업대학교 기계설계 자동화공학부 대학원)
Joo, W.J. (서울산업대학교 기계설계 자동화공학부)
Publication Information
Transactions of Materials Processing / v.16, no.1, 2007 , pp. 25-30 More about this Journal
Abstract
The present study covers an integrated simulation method to evaluate optical performance of an aspheric plastic lens by connecting a finite element (FE) analysis of injection molding with a ray tracing simulation. Traditional ray tracing methods have based on the assumption that the optical properties of a lens are homogeneous throughout the entire volume. This assumption is to a certain extent unrealistic for injection-molded plastic lenses because material properties vary at every point due to the injection molding effects. To take into account the effects of the inhomogeneous optical properties of the molded lens, a new.ay tracing scheme is proposed in conjunction with a FE analysis of the injection molding. A numerical scheme is developed to calculate ray paths on every element layer with more realistic information of the refractive indices which can be obtained through the FE analysis. This information is then used to calculate the ray paths based on the FE mesh of which nodal points have unique index values. The proposed tracing scheme is implemented on the tracing of an aspheric lens, and its validity is ascertained through experimental verification.
Keywords
Injection Holding; Aspheric Lens; Ray Tracing; Finite Element Analysis; Spherical Aberration;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 K. Park, 2004, A study on flow simulation and deformation analysis for injection-molded plastic parts using three-dimensional solid elements, Polym. Plast. Tech. Engng. Vol. 43, pp. 1569-1585   DOI   ScienceOn
2 K. Park, C. Y. Han, 2004, Numerical analysis for the injection molding of an aspheric lens for a photo pick-up device, J. Kor. Soc. Prec. Engng., Vol. 21, pp.163-170
3 S. Kim, L. S. Turng, 2006, Three-dimensional numerical simulation of injection molding filling of optical lens and multi scale geometry using finite element method, Polym. Eng. Sci., Vol. 46, pp. 1263-1274   DOI   ScienceOn
4 A. W. McFarland, J. S. Colton, 2004, Production and analysis of injection molded micro-optic components Polym. Eng. Sci., Vol. 44, pp. 564-579   DOI   ScienceOn
5 K. Park, S. K. Lee, K. S. Jeon, P. S. Mo, 2005, A new ray tracing method of a plastic lens connected with finite-element analysis, J. Kor. Soc. Prec. Engng., Vol. 22, pp. 100-107   과학기술학회마을
6 J. R. Partington, 1960, An Advanced Treatise of Physical Chemistry: Physico-Chemical Optics, Longmans, London
7 K. Park, C. Y. Han, C. H. Park, S. R. Choi, 2002, Design and analysis for precision plastic lenses with aspheric surfaces using MPI/Flow3D and CODE V, 6 Sigma Project Report, Samsung Electro-Mechanics Co
8 W. J. Smith, 1990, Modern Optical Engineering, McGraw-Hill
9 K. Park, J. H. Park, S. R. Choi, 2002, Numerical analysis for injection molding of precision electronics parts, Trans. Mat. Proc., Vol. 11, pp. 414-422   과학기술학회마을   DOI   ScienceOn
10 Y. Maekawa, M. Onishi, A. Ando, S. Matsushima, F. Lai, 2000, Prediction of birefringence in plastics optical elements using 3D CAE for injection molding, Proc. SPIE, Vol. 3944, pp. 935-943   DOI