Dual-tool multiplexing model of parallel computer controlled optical surfacing

Xiaolong Ke, Tianyi Wang, Heejoo Choi, Weslin Pullen, Lei Huang, Mourad Idir, Dae Wook Kim

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Fabrication of large optics is a time-consuming process and requires a vast investment in manpower and financial resources. Increasing the material removal rate of polishing tools and minimizing dwell time are two common ways of reducing the processing time. Indeed, the polishing efficiency can be further improved if multiple tools are used at the same time. In this Letter, we propose a dual-tool deterministic polishing model, which multiplexes the dwell time and optimizes the run parameters of two polishing tools simultaneously. The run velocities of the two tools are coordinated by boundary conditions with a velocity adjustment algorithm, and the corresponding polishing paths are studied. We demonstrate this model with a simulation of polishing one segment of the Giant Magellan Telescope, where, with the proposed dual-tool multiplexing, the processing time of an ø8.4 m mirror has been reduced by 50.54% compared with that using two tools in a sequential schedule.

Original languageEnglish (US)
Pages (from-to)6426-6429
Number of pages4
JournalChinese Optics Letters
Issue number23
StatePublished - Dec 1 2020

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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