Sakai, Japan

Masaichi Shimomura

This inventor holds 2 USPTO granted patents. Top assignee: Minolta Camera Kabushiki Kaisha. Active years: 1979-1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaichi Shimomura. Retrieved from https://idiyas.com/inventor/masaichi-shimomura

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 = 2.0

ph-index = 2

Forward Citations = 20(Granted Patents)


Company Filing History:


Years Active: 1979-1985

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2 patents (USPTO):Explore Patents

Title: Masaichi Shimomura: Innovator in Zoom Lens Technology

Introduction

Masaichi Shimomura is a notable inventor based in Sakai, Japan. He has made significant contributions to the field of optical technology, particularly in the development of advanced zoom lens systems. With a total of 2 patents to his name, Shimomura's work has had a lasting impact on photography and imaging.

Latest Patents

Shimomura's latest patents include a zoom lens system that features an improved focusing mechanism. This innovative system consists of a front lens group, a zooming lens group with at least one movable lens, and a macroscopically fixed rear lens group. The rear group includes an aperture stop that is inclined towards the object side and a focusing lens group that is movable on the image side of the aperture stop. The design fulfills specific optical conditions to enhance performance. Another significant patent is for a two-group wide angle zoom lens system designed for use with a 35 mm single lens reflex camera. This compact system includes two lens groups that can be displaced along the optical axis to achieve desired variations in focal length. The first lens group has a negative refractive power, while the second group has a positive refractive power, ensuring adequate correction of aberrations while maintaining the compactness required for modern zoom lens systems.

Career Highlights

Masaichi Shimomura is associated with Minolta Camera Kabushiki Kaisha, a company renowned for its contributions to imaging technology. His work at Minolta has allowed him to push the boundaries of optical design and innovation.

Collaborations

Throughout his career, Shimomura has collaborated with talented individuals such as Hisayuki Masumoto and Mitsuaki Horimoto. These collaborations have fostered an environment of creativity and innovation, leading to advancements in lens technology.

Conclusion

Masaichi Shimomura's contributions to the field of zoom lens technology exemplify his innovative spirit and dedication to advancing optical systems. His patents reflect a commitment to improving imaging quality and functionality in photography.

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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