Masahiro Naruo

Title: Masahiro Naruo: A Pioneer in Lighting Innovations

Introduction

Masahiro Naruo, located in Osaka, Japan, is a distinguished inventor renowned for his innovative contributions to the field of lighting technology. With an impressive portfolio of 24 patents, Naruo has established himself as a key figure in the development of advanced lighting devices and communication systems that utilize visible light.

Latest Patents

Among his latest patents, Naruo has developed a groundbreaking lighting device and luminaire. This device utilizes a DC-to-DC converter that supplies current to light-emitting units. Key components include a switch unit connected to the light-emitting units and a control circuit that manages both the DC-to-DC converter and the switch unit. The innovative design features an inductor that channels current from the converter to the light-emitting units, along with a first switch element that controls the current flow by switching ON and OFF. The control circuit comprises a zero-crossing detector that identifies when the current flowing through the inductor is approximately zero, resulting in a zero-current detection signal. This signal prompts the switch controller to select a light-emitting unit, thus efficiently directing power to the chosen unit.

Naruo's work is not limited to lighting devices alone; he has also designed a visible light communication modulation circuit, which forms part of an illumination device and communication system. This circuit adjusts the current flowing through an LED light source by modifying its resistance. It incorporates a measurement circuit that monitors voltage and current, a calculation circuit for determining the equivalent series resistance of the LED, and a conversion circuit that alters the modulation resistance based on target parameters.

Career Highlights

Throughout his career, Naruo has been associated with notable companies such as Panasonic Intellectual Property Management Co., Ltd. and Matsushita Electric Works, Ltd. His experience at these prestigious organizations has played a significant role in shaping his innovative approach to technology.

Collaborations

Naruo has collaborated with esteemed colleagues, including Sana Esaki and Kenichi Fukuda. These partnerships have fostered a creative environment that emphasizes teamwork and intellectual exchange, further enhancing the impact of his inventions.

Conclusion

Masahiro Naruo's contributions to lighting technology and visible light communication are pivotal in advancing modern innovations. His 24 patents not only reflect his expertise but also signify his commitment to pushing the boundaries of technology. As a leading inventor based in Osaka, Japan, Naruo continues to inspire future generations of innovators with his groundbreaking work.