Volume 3 Issue 5
Nov.  2010
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GUO Bang-hui, SUN Qiang, WANG Zhi, WANG Jian, WU Hong-sheng, LIU Dian-shuang. Design of 300-1 100 nm multiband optical imaging system and its stray light analysis[J]. Chinese Optics, 2010, 3(5): 474-479.
Citation: GUO Bang-hui, SUN Qiang, WANG Zhi, WANG Jian, WU Hong-sheng, LIU Dian-shuang. Design of 300-1 100 nm multiband optical imaging system and its stray light analysis[J]. Chinese Optics, 2010, 3(5): 474-479.

Design of 300-1 100 nm multiband optical imaging system and its stray light analysis

  • Received Date: 13 May 2010
  • Rev Recd Date: 17 Jul 2010
  • Publish Date: 25 Oct 2010
  • A multichannel optical system working in 300-1 100 nm was designed to detect the information of objects in the multi-band, which could obtain images at the same time in the near ultraviolet, visible and near infrared ranges. As the system was easy to produce stray light and ghost images due to reflecting of barrel and prism, the stray light and ghost images were simulated and analyzed with the help of Light Tools software. From the simulation results, it is shown that the incidences out of the field in the range of 11.7-18.3 and -11.7--18.3 can be reflected by the up and down surfaces of the prism, and then be focused on the image surfaces of the three detectors to form the ghost images; the incidences in the range of 6.2-9.8 and -6.2--9.8 can be reflected by the barrel to form stray lights. The analyzed result was approved by the image achieved from the multichannel system, and it indicates that the analysis is a contribution to design and manufacture of multichannel system. Several kinds of methods to decrease the stray lights and ghost images was proposed and they have been proved to be effective.

     

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