Chye Kiat Ang

Title: Innovations by Chye Kiat Ang in Optical Security Features

Introduction

Chye Kiat Ang is a notable inventor based in Singapore, recognized for his contributions to the field of optical security. With a total of 3 patents, he has developed innovative solutions that enhance the security of various objects through advanced technology.

Latest Patents

One of his latest patents involves a security feature using printed LEDs and wavelength conversion material. In this invention, a printed security mark consists of a random arrangement of printed LEDs and a wavelength conversion layer. During the fabrication of the mark, the LEDs are energized, creating a unique dot pattern that is converted into a digital first code and stored in a database. The emitted spectrum versus intensity and persistence of the wavelength conversion layer is also encoded in this first code. This mark can be applied to credit cards, casino chips, banknotes, passports, and other items for authentication purposes. To authenticate the mark, the LEDs are energized, and the dot pattern, spectrum versus intensity, and persistence are compared to the first code stored in the database. A match confirms the mark's authenticity.

Another significant patent by Ang focuses on printed LEDs and wavelength conversion areas on objects to provide an optical security feature. In this embodiment, an authentication area on a portable object, such as a credit card or casino chip, comprises a random arrangement of printed LEDs and a wavelength conversion layer. When the LEDs are energized during the authentication process, the emitted spectrum and/or persistence of the wavelength conversion layer is detected and encoded in a first code, which is then compared to valid codes stored in the database. If a match is found, the object is authenticated. The LED power may be remotely inductively coupled, and the LEDs may flash, while the wavelength conversion layer emission slowly decays during optical detection. The flash of blue LED light emitted from the edges of the object acts as a light guide, providing optical feedback to the user that the object is being authenticated.

Career Highlights

Chye Kiat Ang is currently associated with Nthdegree Technologies Worldwide Inc., where he continues to innovate in the field of optical security. His work has significantly contributed to enhancing the security features of various consumer and financial products.

Collaborations

Ang has collaborated with notable colleagues, including Steven B Roach and Richard A Blanchard, to further advance his research and development efforts.

Conclusion