Dec. 2010

Article Contents

Chinese Optics> 2010> 3(6): 572-579.

ZHANG Yi-cha, LIU Wei, HU Chun-hui. Thermal-optical property of fore optical system in space hyper spectral imager[J]. Chinese Optics, 2010, 3(6): 572-579.

Citation:

ZHANG Yi-cha, LIU Wei, HU Chun-hui. Thermal-optical property of fore optical system in space hyper spectral imager[J].Chinese Optics, 2010, 3(6): 572-579.

ZHANG Yi-cha, LIU Wei, HU Chun-hui. Thermal-optical property of fore optical system in space hyper spectral imager[J]. Chinese Optics, 2010, 3(6): 572-579.

Citation:

ZHANG Yi-cha, LIU Wei, HU Chun-hui. Thermal-optical property of fore optical system in space hyper spectral imager[J].Chinese Optics, 2010, 3(6): 572-579.

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Thermal-optical property of fore optical system in space hyper spectral imager

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:11 May 2010
Rev Recd Date:13 Jul 2010
Publish Date:20 Dec 2010

Abstract

Abstract

The performance of a hyper spectral imager is affected severely by the turbulence of orbit temperature, which would result in the thermal elastic deformation for the fore reflective telescope in the imager. Moreover, the thermal elastic deformation of mirrors, mechanical structure of the telescope, and the resulting displacements of the mirrors would induce defocusing. Based on the present study for a type of space hyper spectral imager, a model for simulating the thermal elastic deformation of the frontal telescope was built via Finite Element Method. By simulating, the surface deviation amounts and displacements of all the mirrors under different temperature loads were worked out, and the correlation between defocusing magnitude and temperature was obtained through calculating the resulting displacements of the mirrors. The analyzing results could be used as a reference for designing thermal controlling strategy and focusing system and for doing thermal-optical experiments of the developing imager.
- hyper spectral imager,
- off-axial reflective telescope,
- thermal-optical property,
- defocusing amount

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References (1)

References

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