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A Study on the Improvement of the Shape Accuracy of Plastic Lens by Compensation Program  

Woo, Sun-Hee (한국항공우주연구원 통신해양기상위성사업단 탑재체팀)
Lee, Dong-Joo (충남대학교 기계.기계설계.메카트로닉스 공학부)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.17, no.4, 2008 , pp. 112-118 More about this Journal
Abstract
In order to meet the optical performance in the process of the micro lens manufacturing with plastics, it is important to embody accuracy in shape and surface roughness to the intended design. Since it is difficult to machine exactly the mold core of lens fit to the designed shape, in this paper, a simple program using MATLAB is developed for shape correction of the mold core after first machining it. This program evaluates correction parameters(aspheric coefficients and curvature) and generates aspheric NC data for compensating the core surface in prior machining process. The program provides the way to manufacture plastic injection molding lens with aspheric shape of high precision, and is expected to be effective for correction and to shorten the processing time.
Keywords
Aspheric Surface; Compensation program; Injection Molding Lens; Shape accuracy; Core Correction;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Kang, S. D., 2005, "A Study on the Aspheric Design and Ultra-precision Compensation Machining of Optical Pick-up Mold Core," Master Dissertation, Wonkwang Univ., Republic of KOREA
2 Woo, S. H. and Lee, D. J., 2007, "A Study on Key Parameters and Characteristics in the Manufacturing Process of the Dual Pickup Objective Lens," Trans. of KSMTE, Vol. 16, No. 3, pp. 117-124   과학기술학회마을
3 Park, J. S., Kim, D. S., Lee, J. S., Jung, Y. H., Jun, C. S., Lee, T. K., Lee, H. G., and Ryee, K. T., 2001, "Development of a Dedicated CAD/CAM System for Aspheric Lens (II) : Module for Surface Fairing and CAM," Proceeding of KORMA & KIIE spring conference, pp. 473-476
4 Eugene, H., 2002, Optics, Addison Wesley, New York
5 Kang, S. D., Kim, W. S., Jang, K. H., and Kim, D. H., 2004, "A Study on the Compensation of Ultraprecision Aspheric Lens Mold," Proceeding of KSPE spring conference, pp. 237-238
6 Lee, S. J. and Hyun, D. H., 2007, "A Study on Influence of Parameter and Characteristics in the Injection Process on the Birefringence and Refractive Index for Pickup lens," Trans. of KSMTE, Vol. 16, No. 6, pp. 21-28   과학기술학회마을
7 Ikawa, N., 1991, "Ultraprecision Metal Cutting The Past, the Present and Future," Annals of the CIRP, Vol. 40, No. 2, pp. 587-594   DOI   ScienceOn
8 Seong, C. H., Han, B. S., Kim, H. C., Kim, K. S., and Namgung, S., 1997, "A Study on the Turning System for Ultra-precision Machining," Trans. of the KIIE, Vol. 22, No. 2, pp. 116-124
9 Warren J. Smith, 2001, Modern Optical Engineering, 3rd, McGraw-Hill, New York
10 Rim, C. S., and Jo, J. H., 2001, "Design and Evaluation for the Ultra-Compact Camera Lens," J. Sci. Res. Inst. Han Nam Univ., Vol. 31, pp. 85-97
11 William, M., Elaine, C., Russell, F., and Peter, S., "Practical Ray Tracing of Trimmed NURBS Surface," Computer Science Department, 1999
12 Park, Y. C., Yang, S. C., Kim, G. H., and Lee, Y. H., 2005, "The Performance Improvement of The Aspheric Form Accuracy by Compensation Machining Program," Journal of KSMPE, Vol. 4, No. 2, pp. 10-15
13 Parkinson, D. B. and Moreton, D. N., 1991, "Optimal biarc-curve fitting," Computer Aided Design, Vol. 23, No. 6, pp. 411-419   DOI   ScienceOn