Ming Wai Alwin Tam

Title: Innovations of Ming Wai Alwin Tam

Introduction

Ming Wai Alwin Tam is a prominent inventor based in Hong Kong, CN. He has made significant contributions to the field of optical and digital technologies, holding a total of 4 patents. His work focuses on enhancing security measures through innovative encoding and decoding systems.

Latest Patents

One of his latest patents is an optical-digital encoding-decoding system aimed at anti-counterfeiting. This system integrates both optical and digital approaches to provide robust spoof protection, particularly in print anti-spoofing applications. The system utilizes an encoded medium, such as a security label, to display images that are encoded with digital data. A decoding device is employed to decrypt this data, thereby achieving stronger authentication for security-related purposes. The images are encoded into resonant waveguide gratings (RWGs), which allow for angle multiplexing and address various secrecy requirements. Additionally, aperiodic diffraction gratings are used to enhance the viewing experience of selected images over a wider range of angles.

Another notable patent is the multifocal system with polarization-independent focusing. This system employs a polarization beam splitter (PBS) to split an unpolarized light beam into two orthogonally linearly-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 light. The optical assembly consists of birefringent optical elements, including geometric phase lenses and polarization selectors, which can be electrically modulated to optimize focusing. The final result is a single focused light beam that enhances the efficiency of optical systems.

Career Highlights

Ming Wai Alwin Tam is associated with the Hong Kong Applied Science and Technology Research Institute Company, Limited. His work at this institute has allowed him to explore and develop cutting-edge technologies that have practical applications in various industries.

Collaborations

He has collaborated with notable coworkers, including Xiuling Zhu and Kin Lung Chan, contributing to the advancement of research and innovation in their respective fields.

Conclusion

Ming Wai Alwin Tam's innovative patents and contributions to optical and digital technologies highlight his role as a leading inventor in Hong Kong. His work continues to influence the landscape of security technologies and showcases the importance of research and development in combating counterfeiting.