Different configurations of smart self-adaptive shearing interferometric (SSASI) system for different interinstitutional research applications
Prof. Benny Cheung, Associate Director of RCSV; Director of State Key Laboratory of Ultra-precision Machining Technology; Professor, Department of Industrial and Systems Engineering and two RCSV Members, Prof. To Chi-ho, Visiting Chair Professor of Experimental Optometry and Dr Dennis Tse, Associate Professor, School of Optometry received Research Grants Council Collaborative Research Fund (RGC CRF)2022/23 of $4,267,120.
Prof. Cheung is the Project Coordinator (PC) while Prof. To serves as Co-Principal Investigator (Co-PI) and Dr Tse serves as Co-Investigator (Co-I) of the project titled “Smart Self-adaptive Shearing Interferometry for Wavefront Optical Characterization”. Prof. Cheung led 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 makes use of wavefront of light to provide a comprehensive measurement of the properties of materials. Unlike existing devices that only measure optical parameters that are specific to the optical characterisation for certain fields, the SSAI system can perform multiple optical properties measurement within a single system. It will help technology companies evaluate the surface imperfections (e.g., scratches, pits, digs) and validate the surface quality of the critical optical components used in their products.
The interinstitutional project involves three institutions to develop specific research applications for the system. The School of Optometry and RCSV of PolyU will work on optical characterisation of defocus spectacles for human myopia control in optometry and ophthalmology. The Chinese University of Hong Kong will focus on laser beam quality and beam shaping for two-photon processing. The City University of Hong Kong will focus on metasurface optical characterisation. The project will bring scientific advances to precision metrology, material science, optical engineering and measurement science and technology.
