Location History:
- Shibuya-ku, JP (2007)
- Tokyo, JP (2002 - 2010)
- Yokohama, JP (2014)
- Ibaraki, JP (2021)
- Mito, JP (1993 - 2022)
Company Filing History:
9 out of 5,290 
3 out of 164 
2 out of 2,145 
Years Active: 1993-2022
Title: Koichi Arishima - Innovator in Optical Technologies
Introduction
Koichi Arishima is a prominent inventor based in Tokyo, Japan, known for his impactful contributions to optical technologies. With an impressive portfolio of 16 patents, he has significantly advanced the field of optical connection apparatuses and optical fiber technologies.
Latest Patents
Among his latest innovations is an optical connection apparatus that features a prism designed to extract N×M beams of outgoing light from an optical circuit. This invention includes a two-dimensional GRIN lens array consisting of N×M GRIN lenses, coupled with a spacer that provides an appropriate thickness correlating to the optical path length within the prism. The apparatus effectively transmits the N×M outgoing beams through the two-dimensional GRIN lens array to a fiber array, ensuring that the beams are incident on optical fibers positioned at the focal points.
Another of Arishima's recent patents is centered on an optical fiber member combined with an optical fiber holder. This design incorporates two holding members that securely maintain an optical fiber, ensuring the end surface is suitably positioned. The design also addresses alignment issues with holding flat portions and features a curved surface adjacent to the fiber's curving portion, all while ensuring equal thermal expansion coefficients between the holding members.
Career Highlights
Throughout his career, Koichi Arishima has made significant strides in the telecommunications industry, particularly during his tenure at Nippon Telegraph and Telephone Corporation. His roles at this influential company provided him with the platform to innovate and refine optical technologies, demonstrating his commitment to enhancing communication systems.
Collaborations
Arishima has collaborated with notable professionals in the field, including Mamoru Hirayama and Shin Sumida. These collaborations have allowed for the exchange of ideas and further innovation in optical technology, underscoring the importance of teamwork in the advancement of industry standards.
Conclusion
Koichi Arishima’s contributions to optical technology are noteworthy, with his 16 patents spanning vital innovations that improve optical connections and fiber technologies. His work continues to influence the telecommunications landscape, making him a pivotal figure in modern optical engineering.