Volume 41 Issue 8
Sep.  2012
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Article Navigation >  Infrared and Laser Engineering  > 2012  >  41(8): 2096-2101

Li Zongxuan, Jin Guang, Zhang Lei, Yan Yong, Xie Peng, Kong Lin. Support structure of large beam splitter in space[J]. Infrared and Laser Engineering, 2012, 41(8): 2096-2101.
Citation: Li Zongxuan, Jin Guang, Zhang Lei, Yan Yong, Xie Peng, Kong Lin. Support structure of large beam splitter in space[J]. Infrared and Laser Engineering, 2012, 41(8): 2096-2101.
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Support structure of large beam splitter in space

  • 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 100049,China

  • Beamsplitterisacrucialpartofalargespaceopticalremotesensortosplittheimaginglight intotwobeams.Inordertosolvetheproblemofsupportingalargebeamsplitterofaspacecamera, theresearchworkonthesupportingsyructureofalargebeamsplitterwithadimensionof200mm200mm 200mmwasperformed.Thedesignofthesupportingstructureofalargecubicbeamsplitterbasedon thephilosophyofsemi-kinematicmountingandpassivethermalcompensationwaspresented.Thecontact pairconstrainswerebuilt,thenonlinearityoftheboundaryconditionwassimulatedandtheengineering analysisontheprismassemblyutilizingnonlinearfiniteelementmethodswasperformed.Theanalysis resultsindicatedthesurfacefigureprecisionofthebeamsplitter'sLightPassSurface,thusthePVvalue waslessthan73.2nmandtheRMSvaluewaslessthan12nmunderthecouplingofgravityand15℃ stationarytemperaturechange;thefirstnaturalfrequencyofthebeamsplitterassemblyreached183Hz. Thesupportingstructuredesignofthebeamsplittterisvalid,andcansatisfythedemandsonthe structuralstiffnessandthermalstabilityinthespaceenvironment.
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  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Support structure of large beam splitter in space

  • 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 100049,China

Abstract: Beamsplitterisacrucialpartofalargespaceopticalremotesensortosplittheimaginglight intotwobeams.Inordertosolvetheproblemofsupportingalargebeamsplitterofaspacecamera, theresearchworkonthesupportingsyructureofalargebeamsplitterwithadimensionof200mm200mm 200mmwasperformed.Thedesignofthesupportingstructureofalargecubicbeamsplitterbasedon thephilosophyofsemi-kinematicmountingandpassivethermalcompensationwaspresented.Thecontact pairconstrainswerebuilt,thenonlinearityoftheboundaryconditionwassimulatedandtheengineering analysisontheprismassemblyutilizingnonlinearfiniteelementmethodswasperformed.Theanalysis resultsindicatedthesurfacefigureprecisionofthebeamsplitter'sLightPassSurface,thusthePVvalue waslessthan73.2nmandtheRMSvaluewaslessthan12nmunderthecouplingofgravityand15℃ stationarytemperaturechange;thefirstnaturalfrequencyofthebeamsplitterassemblyreached183Hz. Thesupportingstructuredesignofthebeamsplittterisvalid,andcansatisfythedemandsonthe structuralstiffnessandthermalstabilityinthespaceenvironment.

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