Volume 4 Issue 6
Dec.  2011
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LIU Lei. Design of off-axis aspherical collimator with lightweight and high stability[J]. Chinese Optics, 2011, 4(6): 588-593.
Citation: LIU Lei. Design of off-axis aspherical collimator with lightweight and high stability[J]. Chinese Optics, 2011, 4(6): 588-593.

Design of off-axis aspherical collimator with lightweight and high stability

  • Received Date: 21 Sep 2011
  • Rev Recd Date: 23 Nov 2011
  • Publish Date: 25 Dec 2011
  • To meet the testing requirements of high-precision cameras in the outer environment, an off-axis collimator with lightweight, high accuracy, and high temperature stability is designed. Silicon carbide and carbon fiber/epoxy resin matrix composite are adopted to make a reflector and a shading tube respectively for the off-axis aspherical collimator. The collimator can keep accuracy stability in their linear expansion coefficients in a twice at a certain temperature range. After testing, the wavefront aberration of the off-axis collimagor with a diameter of 400 mm and a focal length of 8 m is 1/5(P-V, =632.8 nm) and 1/27(RMS) at a temperature range of (2010) ℃. The collimator can be used in the outer environment.

     

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