Hiroshi Shimizu

Title: **Hiroshi Shimizu: Innovator in Piezoelectric Technology**

Introduction

Hiroshi Shimizu is a distinguished inventor based in Sendai, Japan, renowned for his contributions to the field of piezoelectric technologies. With a total of six patents to his name, Shimizu has made significant strides in the development of gyroscopes and resonators that utilize piezoelectric materials for enhanced performance and efficiency.

Latest Patents

Among his latest innovations, Shimizu's noteworthy patent includes a **Gyroscope using circular rod type piezoelectric vibrator**. This revolutionary system involves a vibrating body that is vibrated in a specific direction by a piezoelectric actuator. When subjected to rotation, a Coriolis force causes another perpendicular vibration to occur, which is then detected as an electric signal representative of the rotational speed by a piezoelectric transducer. The design focuses on utilizing a circular rod of piezoelectric material featuring multiple elongated electrodes on its surface to simplify the installation of these transducers. The innovative approach of arranging electrodes at equiangularly spaced positions enhances the gyroscope’s functionality and accuracy.

Another significant patent is the **Surface Acoustic Wave Resonator**, which comprises an interdigital transducer located on a piezoelectric substrate. This resonator integrates grating reflectors with electrode strips that match the width and pitch of the transducer’s electrodes. By optimizing the weight distribution of the interdigital transducer, Shimizu has maximized its aperture, thereby improving the efficiency of the surface wave propagation path.

Career Highlights

Throughout his career, Hiroshi Shimizu has been associated with reputable companies such as Tohoku Metal Industries and Kokusai Electric Co., Ltd. His work in these organizations has allowed him to apply and expand his expertise in piezoelectric systems, contributing to the advancement of technology in this specialized area.

Collaborations

Shimizu has collaborated with notable colleagues, including Hiroshi Watanabe and Tadashi Kanda. These partnerships have facilitated the exchange of ideas and fostered innovation in piezoelectric applications, further advancing the industry's understanding and capabilities in gyroscopic and resonator technologies.

Conclusion

Hiroshi Shimizu's contributions to piezoelectric technology and his inventive spirit have positioned him as a significant figure in the realm of modern innovation. His patents not only reflect his ingenuity but also pave the way for future advancements in the field. As he continues to innovate, Shimizu's work remains a testament to the potential of piezoelectric materials in transforming various technological applications.