Osaka, Japan

Hiroyasu Fujinaka

USPTO Granted Patents = 57 

 

Average Co-Inventor Count = 1.5

ph-index = 8

Forward Citations = 235(Granted Patents)

Forward Citations (Not Self Cited) = 231(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Tottori, JP (1999)
  • Kadoma, JP (2001 - 2003)
  • Moriguchi, JP (2001 - 2003)
  • Yonago, JP (2000 - 2004)
  • Osaka, JP (2004 - 2023)

Company Filing History:


Years Active: 1999-2024

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Areas of Expertise:
Lens Barrel
Imaging Device
Lens Drive Unit
Linear Motor
Actuator
Image Stabilizing Device
Brushless Motor
Motor Core
Blower
Movable Body Driving Mechanism
Shielding Structure
Camera Technology
57 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Hiroyasu Fujinaka

Introduction

Hiroyasu Fujinaka is a prominent inventor based in Osaka, Japan, recognized for his significant contributions to optical technologies. With an impressive portfolio of 57 patents, Fujinaka's work primarily focuses on lens systems and imaging devices. His ingenuity has made a lasting impact on the fields of photography and videography.

Latest Patents

Among his latest patents is the invention of a lens barrel and imaging device comprising a unique mechanism. This lens barrel incorporates a holding frame, a guide pole, and a focusing lens unit that can be smoothly guided along the guide pole. The actuator moves the focusing lens unit axially relative to the holding frame, while leaf springs support the guide pole, allowing for precise and controlled movement.

Another notable patent is the design of a lens drive unit that includes permanent magnets, a yoke, and a coil. The yoke is carefully structured with center yoke portions and a back yoke portion, connected in a manner that enhances magnetic efficiency. This innovative design optimizes the height of the center yoke portions, ensuring improved performance in optical applications.

Career Highlights

Fujinaka's career includes significant tenures at reputable companies such as Matsushita Electric Industrial Co., Ltd. and Panasonic Intellectual Property Management Co., Ltd. His dedication to advancing optical technology has been pivotal in many of the company's innovative projects.

Collaborations

Throughout his career, Hiroyasu Fujinaka has collaborated with notable colleagues, including Tetsuya Uno and Shigeru Otsuka. Their combined expertise has fostered an environment of creativity and innovation, driving the development of groundbreaking technologies in the lens and imaging sectors.

Conclusion

Hiroyasu Fujinaka's inventive spirit and commitment to optical technology have earned him recognition in the industry. With 57 patents to his name, he continues to pave the way for advancements that enhance our visual experiences. His work embodies the essence of innovation, demonstrating how dedication and creativity can lead to remarkable inventions that benefit society.

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