Haiju Li

Title: Innovations by Inventor Haiju Li

Introduction

Haiju Li is a prominent inventor based in Campbell, California, known for his significant contributions to the field of lighting technology. With five patents to his name, he has played a vital role in enhancing the efficiency and performance of direct AC LED lighting devices. His innovative approach has garnered attention within the industry and showcases the importance of research and development in everyday technology.

Latest Patents

Haiju Li's recent patents illustrate his focus on improving the functionality of direct AC LED lighting devices. One of his notable inventions is aimed at improving Total Harmonic Distortion (THD) for direct AC LED lighting devices. This invention features a variable current source and a controller that optimizes THD compensation current when the LED string is not conducting, ultimately improving power factor and reducing THD.

Additionally, Li has developed a dimmer multi-fire mechanism that increases the efficiency of direct AC LED devices. This technology utilizes a controller that manages a bleeder circuit based on specific timing intervals following voltage changes. By carefully measuring delays and adjusting the circuit's operation, the invention ensures optimal performance in conjunction with leading-edge dimmer switches.

Career Highlights

Haiju Li has made remarkable strides in his career at Dialog Semiconductor GmbH, where his expertise in lighting technology has been instrumental in the company’s innovation efforts. His dedication to enhancing LED lighting solutions has positioned him as a key player in the ongoing evolution of lighting technologies, contributing valuable intellectual property through his patents.

Collaborations

Throughout his career, Haiju Li has collaborated with talented peers, such as Nan Shi and Xiaoyan Wang. Together, they have worked on various projects aimed at pushing the boundaries of lighting technology and achieving optimal efficiency in LED applications.

Conclusion

Haiju Li’s innovative contributions to the field of lighting technology reflect a deep commitment to advancement and efficiency. His patents are emblematic of the ongoing evolution in this sector, serving as a testament to his creativity and engineering prowess. As he continues to collaborate with colleagues and develop new technologies, Haiju Li is well-positioned to influence the future of direct AC LED lighting solutions.