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

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Effect of Injection Temperature Condition on Root Mean Square and Peak-to-Valley of F-theta Lens

사출온도조건이 에프세타 렌즈의 표면조도와 표면형상에 미치는 영향에 관한 연구

  • Park, Yong-Woo (Department of Convergence Mechanical Engineering, Gyeongsang National University) ;
  • Moon, Seong-Min (School of Mechanical & Aerospace Engineering, Gyeongsang National University) ;
  • Lyu, Sung-Ki (School of Mechanical & Aerospace Engineering, Gyeongsang National University)
  • 박용우 (경상대학교 대학원 융합기계공학과) ;
  • 문성민 (경상대학교 기계항공공학부) ;
  • 류성기 (경상대학교 기계항공공학부)
  • Received : 2021.01.17
  • Accepted : 2021.01.31
  • Published : 2021.06.30
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Abstract

This study is focused on the root mean square and peak-to-valley based on the injection conditions of the f-theta lens, one of the main components of laser printers and laser scanning systems. The f-theta lens of an aspherical plastic lens requires ultra-preaction. Injection molding is typically used for the mass production of aspherical plastic lenses. In the injection-molding method, the resin in the lens shape is filled with the resin after melting the plastic pellets at a constant temperature and then cooled. It is necessary to maintain a uniform injection molding system to produce high-quality lenses. These injection-molding systems are influenced by different factors, such as pressure, speed, temperature, mold, and cooling. It is possible to obtain a lens that exhibits the optical characteristics required to achieve harmony. We investigated the root mean square and peak-to-valley caused by variations in temperature, a critical parameter in the melting and cooling of plastic resins generated inside and outside the injection mold.

Keywords

Acknowledgement

This study was supported by the Regional Leading Research Center of NRF and MOCIE(Grant number: NRF-2019R1A5A8083201).

References

  1. Noh, M. J., Hyun, D. H., Chang, H. S., Park, Y. W., and Park, C. Y., "System Design for Laser Scanning Unit using A3", Journal of the Korean Society of Manufacturing Technology Engineers, Vol. 11, No. 4, pp. 71-72, 2011.
  2. Yoo, K. S., Hyun, D. H., Chang, H. S., Park, Y. W., and Park, C. Y., "Injection Molding of a Laser Scanning Unit Optical System", Journal of the Korean Society of Manufacturing Technology Engineers, Vol. 11, No. 4, pp. 102-103, 2011.
  3. Robert, E., Hopkins and D. Stephenson, Optical Scanning(Marcel Dekker), pp. 27~82, 1991.
  4. Park, K., and Han, C. Y., "Numerical Analysis for the Injection Molding of an Aspheric Lens for a Photo Pick-up Device", Journal of the Korean Society of Precision Engineering, Vol. 21, No. 1 1, pp.163~170, 2004.
  5. Jeong, I. S., Ban, M. S, Son,, K. E., and Lee, B. B, "Development of Ftheta Lens for Laser Scanning Unit", Technology and Innovation, Vol. 1, No. 1, pp. 13~19, 2013.
  6. Rim, C. S., "The effect analysis of birefringence of plastic f-theta lens on the beam diameter", Korean Journal of the Optics and Photonics, Vol 10, No. 1, pp. 15-20, 1999.
  7. Bringans, R. D., "Application of Blue Diode Lasers to Printing," Mrs online Proceedings Library(OPL), Vol. 482, pp. 1203, 1997. https://doi.org/10.1557/PROC-482-1203
  8. Sakuma, N., "Aspherical Surface in the Laser Writing Optics," Optical Design, No. 17, pp. 9-15, 1999.
  9. Carmina, L., William, T. P. and Peter, P. C., "Athermalization of a Single-Component Lens with Diffractive Optics," Applied Optics, Vol. 32, No. 13, pp. 2295-2302, 1993. https://doi.org/10.1364/AO.32.002295
  10. Minoura, K., "Historical Review and Future Trends of Scanning Optical Systems for Laser Beam Printers," International Society for Optics and Photonics, Vol. 1987, pp. 264-273, 1993.
  11. Park, K., and Han, C. Y. "Numerical Analysis for the Injection Molding of an Aspheric Lens for a Photo Pick-up Device," Journal of the Korean Society of Precision Engineering, Vol. 21, pp. 163-170, 2004.
  12. Klepek, G. "Manufacturing optical lens by injection compression molding," Kunststoffe, Vol. 77, pp. 13, 1987.