Company Filing History:
2 out of 203 
1 out of 256 Years Active: 2010-2011
Title: Eiji Okubo: Innovator in Optical Technology
Introduction
Eiji Okubo is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of optical technology, holding a total of 2 patents. His work focuses on developing compact and efficient optical devices that enhance performance and reliability.
Latest Patents
Eiji Okubo's latest patents include an optical element feeding device and an optical pickup unit using the same. The optical element feeding device is designed to be compact and lightweight while ensuring stable operation. It features a main shaft and a sub shaft that support a movable frame, allowing an optical element to move along the optical axis. The device incorporates a stepping motor, a lead screw, and a resin nut that engages with the lead screw, enabling movement in the optical axis direction. Additionally, a spring presses the movable frame towards the nut, and a cushioning material connects the two components.
Another significant patent is the optical element feeding device driving method and optical disk apparatus. This invention is capable of detecting issues in a stepping motor and conducting restoration. The optical disk apparatus includes a movable frame that supports a spherical aberration correcting lens, a spring for applying force, and a sensor for detecting the lens's reference position. The system also features a motor driving circuit and a decision circuit that judges abnormalities based on sensor output.
Career Highlights
Eiji Okubo has worked with prominent companies in the industry, including Hitachi Media Electronics Co., Ltd. and Nidec Copal Corporation. His experience in these organizations has contributed to his expertise in optical technologies and innovations.
Collaborations
Throughout his career, Eiji has collaborated with talented individuals such as Seiji Ono and Naomitsu Kuroda. These collaborations have further enriched his work and contributed to advancements in optical technology.
Conclusion
Eiji Okubo is a distinguished inventor whose contributions to optical technology have made a significant impact in the field. His innovative patents and collaborations reflect his dedication to advancing optical devices and systems.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.