Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Development of the Aspherical Lens Polishing System with MR Fluid and Analysis of the Basic Polishing Characteristic of MR Polishing System

MR Fluid를 이용한 비구면 렌즈 연마 시스템 개발 및 기초 연마 특성 분석

  • Received : 2013.12.27
  • Accepted : 2014.02.26
  • Published : 2014.02.28
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Abstract

An aspherical lens, which resolves several problems with a spherical lens,typically serves asa key part of an optical system. Generally, an aspherical lens is fabricated using a diamond turning machine or by mean of injection molding. However, residual stress and/or tool marks can arise when using a commercial fabricating method such as DTM or injection molding. A polishing process, thus, is commonly used to obtain a high-precision aspherical lens. In this study, a polishing method using MR fluid was applied to minimize several problems, in this case residual stress and the creation of tool marks, during the cutting process. The MR polishing system was developed to polish aspherical lenses. A series of experiments were performed to obtain a very fine surface roughness. PMMA (the lens material for molding) was used as a workpiece, and the gap size, magnetic field intensity, wheel speed and feed rate were selected as the parameters in this study. Finally, a very fine surface roughness of Ra=2.12nm was obtained after MR polishing.

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References

  1. Aono, Y., Negishi, M. and Takano, J., "Development of large aperture spherical lens with glass molding", Proc. SPIE. Adv. Opt. Manu. Test. Tech., Vol. 4231, pp. 16-19, 2000.
  2. Kim, H. S. and Park, K. Y., "Aspherical lens design and development of spherical aberration measuring system by use of spherical aberration", J. Kor. Soc. Mach. Tool. Eng., Vol. 16, No. 6, pp. 175-180, 2007.
  3. Yoshizumi, K., Murao, T., Masui, J. Imanaka, R. and Okino, Y., "Ultra high accuracy 3-D profilometer", App. Opt. Vol. 26, No. 9, pp. 1637-1653, 1987.
  4. Venkatesh, V. C., Izman, S., Sharif, S., Mon, T. Y. and Konneh, M., "Precision micro-machining ofsilicon and glass", Proc. IEEE. ICIAT, pp. 1146-1151, 2002.
  5. Lee, H. C. and Kim, J. E., "Development of polishing machine of aspherical glass lens mold with airbag tool", Proc. Mach. Tool. Eng., pp. 51-54, 2007.
  6. Suzuki, H., Kodera, S., Maekawa, S., Morita, N., Sakurai, E., Tanaka, K., Takada, H., Kuriyagawa, T. and Syokji, K., "Study on precision grinding of micro aspherical surface(feasibility study of micro aspherical surface by inclined rotational grinding)", J. Jap. Soc. Prec. Eng., Vol. 64, No. 4, pp. 619-623, 1998. https://doi.org/10.2493/jjspe.64.619
  7. Oliver, W., Faehnle, Hedser, H., and Van Brug, "Novel approaches to generate aspherical optical surfaces", Opt. Manu. and Test. III, Proc. SPIE 3782, pp. 170-180, 1999.
  8. Shin, Y. J., Kim, D. W., Lee, E. S. and Kim, K. W., "The development of polishing system a magnetorheological fluids", J. Kor. Soc. Prec. Eng., Vol. 21, No. 7, pp. 46-52, 2004.
  9. Kim, K. D., "A controllable micro damper using magneto-rheological fluids", J. Kor. Soc. Prec. Eng., Vol. 17, No. 8, pp. 44-45, 2000.

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