Location History:
- Hitachi-shi, Ibaraki JP (1993)
- Ibaraki-ken, JP (1996)
- Ibaraki, JP (1997)
- Hitachi, JP (1989 - 2014)
Company Filing History:
8 out of 836 
4 out of 42,508 
1 out of 2,333 
Years Active: 1989-2014
Title: The Innovative Journey of Tatsuya Kumagai
Introduction
Tatsuya Kumagai, a distinguished inventor based in Hitachi, Japan, has made significant contributions to the field of optical measurement and sensing technologies. With a remarkable portfolio of 10 patents, his work reflects a blend of innovative thought and practical application.
Latest Patents
Among his latest innovations, the Sagnac optical ingredient-measuring apparatus with circular polarizers stands out. This cutting-edge apparatus is designed to measure the concentration of optically rotative substances. It features a sensor main body that detects the phase difference between linear polarized light beams traveling through an optical fiber loop in opposite directions. The inclusion of a circular polarized input component enhances its functionality, allowing the conversion of linear polarized light into left-hand and right-hand circular polarized light. A concentration detector calculates the substance concentration based on the detected phase difference, showcasing a leap in optical measurement technology.
Another notable invention is the optical fiber vibration sensor, which integrates various components including a light source, an optical receiver, and a signal processing unit. This sensor uses an optical fiber loop, with parts installed both inside and outside the main body housing. This unique configuration enables precise vibration detection, enhancing the capabilities of optical fiber technology in sensing applications.
Career Highlights
Tatsuya's career has included significant roles at renowned organizations such as Hitachi Cable, Inc. and Hitachi, Ltd. His tenure in these companies has allowed him to collaborate with some of the brightest minds in the field, further enriching his inventive journey.
Collaborations
Throughout his career, Tatsuya Kumagai has worked closely with colleagues like Hiroshi Kajioka and Hisao Sonobe. Such collaborations have been pivotal in honing his skills and fostering an environment of mutual innovation. The synergy among these inventive minds contributes to the advancement of their projects and the overall growth of the technology sector.
Conclusion
Tatsuya Kumagai stands as a prominent figure in the world of innovation, particularly in optical measurement and sensing technologies. His ten patents highlight his dedication to advancing technological frontiers and his collaborative spirit underlines the importance of teamwork in driving innovation. As he continues to explore the realms of science and engineering, his future contributions will surely make a lasting impact on the field.