This inventor holds 17 USPTO granted patents and 2 published patent applications. Top assignees: Hong Kong Applied Science and Technology Research Institute, The Hong Kong University of Science and Technology, The University of Hong Kong. Active years: 2009-2026.
Company Filing History:
12 out of 611 
4 out of 652 
1 out of 374 
Years Active: 2009-2026
Title: Xiuling Zhu: Innovator in Optical Security and Multifocal Systems
Introduction
Xiuling Zhu is a prominent inventor based in Hong Kong, CN. He has made significant contributions to the fields of optical security and multifocal systems. With a total of 17 patents to his name, Zhu's work showcases his innovative approach to technology.
Latest Patents
One of Zhu's latest patents is a multilayered optical security device. This device features a resonant waveguide grating (RWG) layer on an under layer that includes a hologram. The RWG layer consists of multiple RWGs designed to generate various patterns. Each RWG is divided into first and second portions, equipped with diffraction gratings of differing periods for effective light coupling. This design minimizes interference with the holographic image produced by the under layer, which is particularly beneficial for applications like digital holographic encryption that may involve biometric data, such as fingerprints.
Another notable patent is a multifocal system that achieves polarization-independent focusing. This system utilizes a polarization beam splitter (PBS) to divide an unpolarized light beam into two orthogonally polarized light beams. These beams are reflected by mirrors and enter a variable-focusing module, which includes waveplates that convert the light beams into circularly polarized forms. The optical assembly is composed of birefringent optical elements, including geometric phase lenses and polarization selectors, which can be electrically modulated to adjust optical power. The system ultimately recombines the focused light beams to create a single focused beam.
Career Highlights
Zhu has worked with esteemed organizations such as the Hong Kong Applied Science and Technology Research Institute Company Limited and The Hong Kong University of Science and Technology. His experience in these institutions has allowed him to further his research and development in optical technologies.
Collaborations
Zhu has collaborated with notable colleagues, including Jiaxin Sun and Zhiguo Meng. These partnerships have contributed to the advancement of his innovative projects and patents.
Conclusion
Xiuling Zhu's contributions to optical security and multifocal systems highlight his role as a leading inventor in his field. His patents reflect a commitment to advancing technology and addressing modern challenges.