Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Eight-axis-polishing Machine for Large Off-axis Aspheric Optics

  • Rhee, Hyug-Gyo (Center for Space Optics, Korea Research Institute of Standards and Science) ;
  • Yang, Ho-Soon (Center for Space Optics, Korea Research Institute of Standards and Science) ;
  • Moon, Il-Kweon (Center for Space Optics, Korea Research Institute of Standards and Science) ;
  • Kihm, Hag-Yong (Center for Space Optics, Korea Research Institute of Standards and Science) ;
  • Lee, Jae-Hyub (Center for Space Optics, Korea Research Institute of Standards and Science) ;
  • Lee, Yun-Woo (Center for Space Optics, Korea Research Institute of Standards and Science)
  • Received : 2011.09.23
  • Accepted : 2011.11.11
  • Published : 2011.12.25
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Abstract

For the purpose of fabricating off-axis aspheric optics, we propose an 8-axis-polishing machine combined with a testing tower whose height is up to 9 m. The proposed polishing machine was designed and analyzed by using a well-known finite element method. The eight axes of the machine have a synchronized motion generated by a computer, and each axis was calibrated by a heterodyne laser interferometer or an optical encoder. After calibration, the maximum positioning error of the machine was less than 2 ${\mu}m$ within a whole 2 m ${\times}$ 2 m area. A typical fabrication result of a ${\phi}1.5$ m concave mirror was also described in this manuscript.

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References

  1. A. Offner and D. Malacara, "Null tests using compensators," in Optical Shop Testing, 2nd ed., D. Malacara, ed. (Wiley, New York, USA, 1992).
  2. M. V. Mantravadi, "Newton, Fizeau, and Hidinger interferometers," in Optical Shop Testing, 2nd ed., D. Malacara, ed. (Wiley, New York, USA, 1992).
  3. J. E. Greivenkamp and J. H. Bruning, "Phase shifting interferometers," in Optical Shop Testing, 2nd ed., D. Malacara, ed. (Wiley, New York, USA, 1992).
  4. P. Zhou and J. H. Burge, "Coupling of surface roughness to the performance of computer-generated holograms," Appl. Opt. 46, 6572-6576 (2007). https://doi.org/10.1364/AO.46.006572
  5. J. C. Wyant, "Dynamic interferometry," Opt. Photon. News 14, 36-41 (2003).
  6. H. Kihm and Y. W. Lee, "A fiber-diffraction interferometer using a coherent fiber optic taper," Meas. Sci. Technol. 21, 105306-1-105306-5 (2010). https://doi.org/10.1088/0957-0233/21/10/105306
  7. J. E. Millerd, N. J. Brock, J. B. Hayes, M. B. North-Morris, M. Novak, and J. C. Wyant, "Pixelated phase-mask dynamic interferometer," Proc. SPIE 5531, 304-314 (2004). https://doi.org/10.1117/12.560807
  8. Y. S. Kim, K. B. Ahn, K. Park, I. K. Moon, and H. S. Yang, "Accuracy assessment for measuring surface figures of large aspheric mirrors," J. Opt. Soc. Korea 13, 178-183 (2009). https://doi.org/10.3807/JOSK.2009.13.2.178
  9. E. O. Doebelin, "Motion and dimensional measurement," in Measurement Systems Application and Design, 4th ed., E. O. Doebelin, ed. (McGraw-Hill, Singapore, 1990).
  10. I. K. Moon and Y. W. Lee, "Optical performance of metal plated contoured back lightweight mirrors," J. Korean Phys. Soc. 54, 1506-1512 (2009). https://doi.org/10.3938/jkps.54.1506
  11. M. Ando, M. Negishi, M. Takimoto, A. Deguchi, and N. Nakamura, "Super-smooth surface polishing on aspheric optics(II): achievement of a super-smooth polishing," Proc. SPIE 2576, 348-356 (1995). https://doi.org/10.1117/12.215613