Volume 5 Issue 2
Apr.  2012
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CHENG Zhi-feng, LI Ming, CHENG Xin. Optimal structure design of visible zoom lens[J]. Chinese Optics, 2012, 5(2): 154-160. doi: 10.3788/CO.20120502.0154
Citation: CHENG Zhi-feng, LI Ming, CHENG Xin. Optimal structure design of visible zoom lens[J]. Chinese Optics, 2012, 5(2): 154-160. doi: 10.3788/CO.20120502.0154

Optimal structure design of visible zoom lens

  • Received Date: 11 Nov 2011
  • Rev Recd Date: 13 Jan 2012
  • Publish Date: 10 Apr 2012
  • The primary tube of a visible zoom lens and its mounting are designed by UG advanced simulation according to the characteristcs of a wide temperature range(-40-+55 ℃) and little optical axis variation(0.2 mrad), and the deformation patterns in different conditions are gotten by using finite element analysis. An estimation way to get the optical axis variation is proposed, by which the more reasonable structure type is obtained. The results from the lens transfer function test and vibration test show that the Modulation Transfer Function(MTF) is above 0.2 and the fundamental frequency is 117 Hz. The practical image is stable and clear, which indicates that the optimized design of zoom lens is reasonable.

     

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