Shinichi Ohtsuka

Title: The Innovations of Shinichi Ohtsuka

Introduction

Shinichi Ohtsuka is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of optical storage devices, holding a total of 3 patents. His work focuses on improving the precision and efficiency of optical storage mechanisms.

Latest Patents

One of Ohtsuka's latest patents is an objective lens driving mechanism in an optical storage device. This invention includes a carriage mounted on a base, which is designed to move in a specific direction. The driving mechanism consists of a first coil fixed to the carriage and a first magnetic circuit mounted on the base. The objective lens is responsible for focusing a light beam onto an optical storage medium, while a lens holder supports the objective lens. Additionally, the device features a conductive elastic support member that allows for the movable support of the lens holder relative to the carriage. A flexible printed circuit board is also included, which connects electrically to the conductive elastic support member.

Another significant patent by Ohtsuka is a storage apparatus that offers improved precision in positioning the carriage relative to a disk. This storage apparatus is designed to have a high resonant frequency for the carriage driving coils, resulting in excellent precision. It is typically used in optical disk drives that read or write data from disks. The carriage is moved using driving coils mounted on its flanks, along with magnetic circuits composed of permanent magnets and yokes located outside the carriage. The design of the driving coils enhances the rigidity and precision of the carriage positioning.

Career Highlights

Shinichi Ohtsuka is currently employed at Fujitsu Corporation, where he continues to innovate in the field of optical storage technology. His work has been instrumental in advancing the capabilities of storage devices, making them more efficient and reliable.

Collaborations

Ohtsuka has collaborated with notable coworkers such as Shingo Hamaguchi and Yasuyuki Ozawa, contributing to various projects that enhance optical storage technologies.

Conclusion

Shinichi Ohtsuka's contributions to optical storage devices through his innovative patents demonstrate his expertise and commitment to advancing technology in this field. His work continues to influence the development of more precise and efficient storage solutions.