I/UCRC FRP: Minimizing uncertainty in freeform optics metrology using CMMs

I/UCRC FRP：使用坐标测量机最大限度地减少自由曲面光学计量的不确定性

• 批准号: 1432990
• 负责人: Christopher Evans
• 金额: $ 19.87万
• 依托单位: University of North Carolina at Charlotte
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-01 至 2017-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1432990&HistoricalAwards=false
• 关键词: UCRC; FRP; Minimizing; uncertainty; freeform

This I/UCRC Fundamental Research Program project plans to research the adaptation of in-situ self-calibration methods developed for interferometric measurement of optical surfaces to measurement of freeform optical surfaces on precision coordinate measuring machines (CMMs). In optics manufacturing, a fundamental measurement is a map of surface errors, a hit map which is used to perform corrective polishing. This project will develop calculation methods that evaluate the uncertainty point-wise in that map and enable the estimation of the uncertainty in any parametric description of the error map. Methods developed in ultraprecision interferometric metrology will be applied to contact measurement of complex optical surfaces. The result will enable new optical surface shapes to be measured, and hence made, thus opening up new design space that researchers on CeFO faculty and elsewhere can explore productively.Freeform optics represent a transformative opportunity, enabling compact, light,high resolution infra-red imaging systems that can have broad application from automotive to manufacturing process control, defense and disaster relief. The fundamental metrology knowledge will be developed with member companies of the Center for Freeform Optics, ensuring rapid technology transfer and uptake of new methods. The work is supported by the Industry Advisory Board as well as individual industry members of the center and has the potential to extend the center's portfolio while potentially attracting new members. Research results will be integrated into the PI's undergraduate manufacturing class, where high tech optics inspire interest.

该I/UCRC基础研究计划项目计划研究用于光学表面干涉测量的原位自校准方法在精密三坐标测量机上测量自由曲面的适应性。在光学制造中，一个基本的测量是表面误差图，一个用于执行校正抛光的命中图。该项目将开发计算方法，以评估该图中逐点的不确定性，并能够估计误差图的任何参数描述中的不确定性。超精密干涉测量方法将应用于复杂光学表面的接触测量。结果将使新的光学表面形状能够被测量，从而制造出来，从而开辟了新的设计空间，CeFO教员和其他地方的研究人员可以有效地探索。自由曲面光学代表了一个变革性的机会，使紧凑、轻便、高分辨率的红外成像系统能够从汽车到制造过程控制、国防和救灾等广泛应用。基础计量知识将与自由形式光学中心的成员公司一起开发，确保快速的技术转移和新方法的采用。这项工作得到了行业咨询委员会以及该中心的个别行业成员的支持，并有可能扩大中心的投资组合，同时有可能吸引新成员。研究成果将整合到PI的本科制造课程中，高科技光学激发了学生的兴趣。