Location History:
- Katano, JP (1992 - 1995)
- Sakai, JP (1999)
- Osaka, JP (1999 - 2023)
Company Filing History:
5 out of 27,375 
1 out of 13,247 Years Active: 1992-2023
Title: Hisayuki Ii: Innovator in Zoom Lens Technology
Introduction
Hisayuki Ii is a prominent inventor based in Katano, Japan. He has made significant contributions to the field of optical technology, particularly in the development of zoom lens systems. With a total of 6 patents to his name, his work has had a lasting impact on imaging devices.
Latest Patents
His latest patents include a zoom lens system, lens barrel, image capture device, and camera system that incorporates the zoom lens system. The zoom lens system features a first lens group with positive power and a second lens group with negative power. Additionally, it includes following lens groups, which consist of a first focus lens group with negative power and a second focus lens group with positive power. These groups are arranged adjacent to each other and closer to the image than the first focus lens group. During focusing, the first and second focus lens groups move along the optical axis from an infinity focus point to a close focus point. The system is designed to change intervals between lens groups while the first lens group remains fixed with respect to the image plane. The zoom lens system adheres to the inequality -0.23 < f2/TTL < -0.15, where TTL represents the optical total length at the telephoto end and f2 is the focal length of the second lens group.
Career Highlights
Hisayuki Ii has worked with notable companies such as Matsushita Electric Industrial Co., Ltd. and Panasonic Intellectual Property Management Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to advancements in optical technology.
Collaborations
Throughout his career, Hisayuki has collaborated with talented individuals, including Shusuke Ono and Hiroaki Okayama. These partnerships have fostered innovation and creativity in his projects.
Conclusion
Hisayuki Ii's contributions to zoom lens technology and his collaborations with industry professionals highlight his importance in the field of optical innovations. His work continues to influence the development of imaging devices today.
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.