Location History:
- Asaka, JA (1977)
- Asaka, JP (1979 - 1983)
- Saitama, JP (1983 - 1985)
Company Filing History:
Years Active: 1977-1985
Title: Eiichi Hasegawa: Innovator in Optical Information Recording
Introduction
Eiichi Hasegawa is a prominent inventor known for his contributions to the field of optical information recording. He is based in Asaka, Japan, and has been awarded a total of 14 patents throughout his career. His innovative methods have significantly advanced the technology used in optical memory materials.
Latest Patents
Hasegawa's latest patents include a "Method for copying optical information" and a "Method for recording light information." The method for copying optical information involves disposing a master mask with a tracking signal over an optical memory material. This material can be thermally altered to deform or remove it upon the application of an energy beam. The process allows for recording on the altered material and includes techniques such as irradiating the master disk with flash light for a brief period or scanning with a laser beam. The method for recording light information focuses on using a heat mode recording layer that consists of a metal and metal compounds. This innovative approach allows for highly sensitive recording with lower energy light beams.
Career Highlights
Hasegawa has made significant strides in his career while working at Fuji Photo Film Company, Limited. His work has been instrumental in developing advanced optical recording technologies that are widely used in various applications today.
Collaborations
Throughout his career, Hasegawa has collaborated with notable coworkers, including Minoru Wada and Yonosuke Takahashi. These collaborations have contributed to the success of his innovative projects and patents.
Conclusion
Eiichi Hasegawa's work in optical information recording has made a lasting impact on the industry. His innovative methods and patents continue to influence the development of optical memory technologies.