Fumihiko Yamaguchi

Title: Fumihiko Yamaguchi: Innovator in Electroacoustic Transducer Technology

Introduction

Fumihiko Yamaguchi is a notable inventor based in Akishima, Japan. He has made significant contributions to the field of electroacoustic transducers, showcasing his innovative spirit and technical expertise. His work has led to advancements that enhance the performance and efficiency of audio devices.

Latest Patents

Yamaguchi holds a patent for an electroacoustic transducer. The patent describes a diaphragm with an edge formed by alternately up-rolled and down-rolled portions, which are arranged at regular intervals in the circumferential direction. This unique design includes sloped-plane portions that connect the rims of adjacent up-rolled and down-rolled sections. The uneven shape of the edge varies the stiffness of the diaphragm during vibration, effectively canceling differences in vibratory driving force from coils in a magnetic circuit. This innovation helps to restrain any unbalanced vibratory driving force due to magnetic flux distribution, achieving optimum rigidity while allowing for dimensional minimization and thickness reduction.

Career Highlights

Fumihiko Yamaguchi is associated with Foster Electric Company, Limited, where he has applied his expertise in developing advanced audio technologies. His work has been instrumental in enhancing the quality and performance of electroacoustic devices.

Collaborations

Yamaguchi has collaborated with Hideo Koreeda, contributing to the development of innovative solutions in the field of electroacoustics.

Conclusion

Fumihiko Yamaguchi's contributions to electroacoustic transducer technology reflect his dedication to innovation and excellence. His patent demonstrates a significant advancement in diaphragm design, which has implications for the future of audio technology.