Volume 7 Issue 6
Nov.  2014
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SONG Shu-mei. Manufacturing and testing of rectangular off-axis aspheric mirror with double-swing polishing method[J]. Chinese Optics, 2014, 7(6): 975-981. doi: 10.3788/CO.20140706.0975
Citation: SONG Shu-mei. Manufacturing and testing of rectangular off-axis aspheric mirror with double-swing polishing method[J]. Chinese Optics, 2014, 7(6): 975-981. doi: 10.3788/CO.20140706.0975

Manufacturing and testing of rectangular off-axis aspheric mirror with double-swing polishing method

  • Received Date: 13 Sep 2014
  • Rev Recd Date: 15 Nov 2014
  • Publish Date: 25 Nov 2014
  • A kind of manufacturing and testing method for rectangular off-axis aspheric lightweight mirror is introduced. In order to overcome the corner effect, double-swing polishing(DSP) method is proposed. A DSP machine is made to achieve satisfying manufacturing result. The DSP and the 4-pole method are successfully applied for manufacturing optical system in the spectrometer. Four rectangular off-axis aspheric mirrors with the largest size of 266 mm110 mm are polished, and the final surface precision figures are better than 0.020(RMS, @633 nm). Manufacturing result shows that the double-swing polishing method improves the polishing efficiency and reduces the optical surface medium frequency error.

     

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