Tokyo, Japan

Tomohisa Koizumi

This inventor holds 1 USPTO granted patent. Top assignee: Fujinon Corporation. Active years: 2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomohisa Koizumi. Retrieved from https://idiyas.com/inventor/tomohisa-koizumi

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 1

Forward Citations = 2(Granted Patents)


Company Filing History:


Years Active: 2008

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1 patent (USPTO):Explore Patents

Title: The Innovations of Tomohisa Koizumi

Introduction

Tomohisa Koizumi is a prominent inventor based in Tokyo, Japan. He is known for his significant contributions to the field of optical technology, particularly in autofocus systems. His innovative approach has led to advancements that enhance the functionality of lens systems.

Latest Patents

One of Koizumi's notable patents is an autofocus system. This invention allows for a momentary mode in which autofocus (AF) is activated when an AF switch is pressed, as well as a continuous mode where AF operates continuously. The system utilizes a CPU that employs the AF switch as an AF stop switch, effectively halting the AF process when the switch is pressed during continuous mode. This innovation showcases his ability to improve user experience in photography and videography.

Career Highlights

Koizumi is associated with Fujinon Corporation, a well-respected company in the optical and imaging industry. His work at Fujinon has allowed him to explore and develop cutting-edge technologies that push the boundaries of lens design and functionality.

Collaborations

Throughout his career, Koizumi has collaborated with talented individuals such as Masayuki Miyazaki and Tadashi Sasaki. These partnerships have fostered a creative environment that encourages innovation and the sharing of ideas.

Conclusion

Tomohisa Koizumi's contributions to autofocus technology exemplify his dedication to advancing optical systems. His innovative spirit and collaborative efforts continue to influence the industry, making him a noteworthy figure in the realm of inventions.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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