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Conference Aug 2026

Comprehensive measurement system for surface topography and focal length of microlens arrays based on a Twyman-Green interometer and the axial-scanning-assisted angular method

Surface topography and focal length are two key parameters of microlens arrays that directly determine their optical performance. Conventional characterization methods generally require two independent measurement systems for topography and focal length, making it difficult to establish precise spatial correspondence b...

Zong-Jun Xiong, Yao Hu, Qun Hao · 0 citations
Aug 2026

Surface figure error and parameter testing of aspheric segments in segmented telescope primary mirrors

The segmented primary mirror represents a major breakthrough in large-scale optical engineering, overcoming the long-standing difficulties associated with the fabrication, transportation, and installation of large monolithic primary mirrors. During manufacturing and alignment, interferometric testing based on computer-...

Hao-Ran Li, Yao Hu, Qun Hao · 0 citations

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