Hiroaki Hanafusa

Title: Hiroaki Hanafusa: Innovator in Dielectric Multilayer Filters

Introduction

Hiroaki Hanafusa is a notable inventor based in Mito, Japan. He has made significant contributions to the field of optical communication systems, particularly through his innovative patents. With a total of 6 patents to his name, Hanafusa has established himself as a key figure in the development of advanced dielectric multilayer filters.

Latest Patents

Hanafusa's latest patents focus on methods of fabricating dielectric multilayer filters. One of his notable inventions is a dielectric multilayer filter applicable to optical communication systems. This invention includes a fluorinated polyimide base layer with a dielectric multilayer formed over it. The fabrication method involves applying liquid fluorinated polyimide material over a smooth surface to a predetermined thickness, followed by drying and hardening. A dielectric multilayer is then formed over the fluorinated polyimide layer using an ion assist vapor deposition method. This innovative approach allows for the production of filters that are easy and economical to manufacture, exhibit highly uniform physical and optical properties, and are durable and resistant to curling and warping.

Career Highlights

Throughout his career, Hanafusa has worked with prominent companies such as Nippon Telegraph and Telephone Corporation and Japan Aviation Electronics Industry, Limited. His experience in these organizations has contributed to his expertise in the field of optical communication technologies.

Collaborations

Hanafusa has collaborated with notable colleagues, including Juichi Noda and Yoshiaki Takeuchi. These collaborations have further enriched his work and innovations in the industry.

Conclusion

Hiroaki Hanafusa's contributions to the field of dielectric multilayer filters have made a significant impact on optical communication systems. His innovative methods and collaborations highlight his role as a leading inventor in this specialized area.