Prof. Benny C.F. CHEUNG, Director of the State Key Laboratory of Ultra-precision Machining Technology and Associate Director of the Research Centre for SHARP Vision (RCSV), is leading an inter-institutional research project which aims to develop a novel smart self-adaptive shear interferometric (SSASI) system for optical characterisation.
The SSASI system is a specialised instrument that uses the wavefront of light to comprehensively measure the properties of materials. Whereas existing devices only measure optical parameters that are specific to optical characterisation for certain fields, the SSAI system enables the measurement of multiple optical properties within a single system. It will help technology companies evaluate surface imperfections (e.g., scratches, pits and dings) and validate the surface quality of the critical optical components used in their products.
The inter-institutional project has been granted the Collaborative Research Fund (CRF) 2022/2023 by the University Grants Committee, with support totalling HK$4,267,120. Each of the three participating institutions will develop specific research applications for the system. The School of Optometry and Research Centre for SHARP Vision at PolyU will work on optical characterisation of defocus spectacle lenses for human myopia control in optometry and ophthalmology. The Chinese University of Hong Kong will focus on laser beam quality and beam shaping for twophoton processing. The City University of Hong Kong will focus on optical characterisation of metasurfaces. The project will bring scientific advances to precision metrology, material science, optical engineering, and measurement science and technology.
Different configurations of the smart self-adaptive shearing interferometric (SSASI) system for different inter-institutional research applications
