Shunji Egawa

Title: Shunji Egawa: Innovator in LED Technology

Introduction

Shunji Egawa is a prominent inventor based in Tokorozawa, Japan. He has made significant contributions to the field of LED technology, holding a total of 13 patents. His work focuses on developing advanced LED driving circuits that enhance the efficiency and functionality of LED systems.

Latest Patents

One of Egawa's latest inventions is an LED driving circuit designed to switch the connection of LED blocks with proper timing. This innovation takes into account the supply voltage and the forward voltage (Vf) specific to individual LEDs within each block. The circuit includes a rectifier, a first circuit with a current detection unit, and a first current control unit that manages the current flowing from the first LED array to a negative power supply output. Additionally, a second circuit is incorporated, which features a second current detection unit and a second current control unit for the second LED array. This design allows for efficient current management and switching between LED arrays based on real-time conditions.

Another notable patent by Egawa also focuses on an LED driving circuit that adjusts the connection of LED blocks according to the supply voltage and the Vf of individual LEDs. This circuit similarly includes a rectifier and a first circuit with a current detection unit and a current limiting unit. The innovation ensures that the current flowing through the LED arrays is effectively managed, enhancing the overall performance of the LED system.

Career Highlights

Throughout his career, Shunji Egawa has worked with notable companies such as Citizen Watch Company, Ltd. and Citizen Holdings Company, Ltd. His experience in these organizations has allowed him to refine his skills and contribute to the advancement of LED technology.

Collaborations

Egawa has collaborated with talented individuals in the field, including Masato Yamada and Isao Ochi. These partnerships have fostered innovation and have played a crucial role in the development of his patented technologies.

Conclusion

Shunji Egawa's contributions to LED technology through his innovative patents and collaborations highlight his significant impact on the industry. His work continues to influence the efficiency and effectiveness of LED systems, paving the way for future advancements.