Optimal design and analysis of a space lightweight mirror with a directionally oriented 2.5D-CVT structure.
Appl Opt
; 63(16): 4386-4395, 2024 Jun 01.
Article
in En
| MEDLINE
| ID: mdl-38856618
ABSTRACT
Reflective mirrors are the key imaging components of space-borne telescopes, which require a high lightweight ratio integrated with excellent optical properties. In this context, a novel, to our knowledge, 2.5D centroidal Voronoi tessellation (CVT) generation methodology is proposed for designing and optimizing a lightweight mirror structure. Firstly, the initial designs are obtained combining global sensitivity factor mapping and local distribution optimization. Then, the optimal model is selected through multi-objective optimization and decision making. Subsequently, the FEA (finite element analysis) results indicate that, under the same mass, the proposed design exhibits better optomechanical performance. Finally, in practical applications, the approach presented in this paper outperforms the traditional design for each technological requirement, including a 62% reduction in RMS and a higher lightweight ratio. This method offers a kind of novel design and optimization process for space-based optomechanical lightweight structures.
Full text:
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Database:
MEDLINE
Language:
En
Journal:
Appl Opt
Year:
2024
Type:
Article