Dec. 2010

Article Contents

Chinese Optics> 2010> 3(6): 580-585.

ZHAO Bo, YAN Chang-xiang, WANG Yi-qun, WANG Yong-meng. Experimental analysis of support structure for combined dispersing prisms at temperature difference[J]. Chinese Optics, 2010, 3(6): 580-585.

Citation:

ZHAO Bo, YAN Chang-xiang, WANG Yi-qun, WANG Yong-meng. Experimental analysis of support structure for combined dispersing prisms at temperature difference[J].Chinese Optics, 2010, 3(6): 580-585.

ZHAO Bo, YAN Chang-xiang, WANG Yi-qun, WANG Yong-meng. Experimental analysis of support structure for combined dispersing prisms at temperature difference[J]. Chinese Optics, 2010, 3(6): 580-585.

Citation:

ZHAO Bo, YAN Chang-xiang, WANG Yi-qun, WANG Yong-meng. Experimental analysis of support structure for combined dispersing prisms at temperature difference[J].Chinese Optics, 2010, 3(6): 580-585.

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Experimental analysis of support structure for combined dispersing prisms at temperature difference

1.
Changchun Institute of Optics,Fine Mechanics and Physics, Chinese Academy of Sciences,Changchun 130033,China;
2.
Graduate University of Chinese Academy of Sciences,Beijing 100039,China

Received Date:15 Aug 2009
Rev Recd Date:23 Oct 2009
Publish Date:20 Dec 2010

Abstract

Abstract

The support structure of the combined dispersing prisms used in a hyper-spectrum imager is introduced, and the influence of the temperature changing on the image quality is discussed. The material of the clamping support is chosen according to the requirments, and the deformation of prism assemblies is simulated with the Finite Element Method(FEM) at the temperature differences of 5 ℃ to 10 ℃. It resolves emphatically the deformation of a prism reflector caused by the different linear expansion coefficients and analyzes the effect of the thicknesses and contact areas of the gaskets on the surface profiles of prism assembiles after the PTEE gaskets are used as a temperature compensation. Experimental results show that the surface profile of the quartz prism meets the requirement of /6 when the gaskets are added between the clamping support and the prism. The optimal result provides a reference for the support structure design of the combined dispersing prism.
- prism,
- support structure,
- linear expansion coefficient,
- surface type,
- Finite Element Method(FEM)

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References (1)

References

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