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For the Inventor, By the Inventor

Tokorozawa, Japan

Atsushi Okuyama

This inventor holds 62 USPTO granted patents and 4 EPO patents, primarily in Image Projection Technology (CPC class G03B). Top assignees: Canon Kabushiki Kaisha, Mitsumi Electric Company Ltd., Hitachi-Johnson Controls Air Conditioning, Inc.. Active years: 1994-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Atsushi Okuyama. Retrieved from https://idiyas.com/inventor/atsushi-okuyama

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

USPTO Granted Patents = 62

% Patents Active = 58.1


Average Co-Inventor Count = 1.9

ph-index = 14

Forward Citations = 608(Granted Patents)

Forward Citations (Not Self Cited) = 588(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Saitama-ken, JP (2003)
  • Yamagata, JP (2004)
  • Saitama, JP (2004 - 2007)
  • Tokorozawa, JP (1997 - 2015)
  • Tokyo, JP (1994 - 2019)

Company Filing History:

goldMedal59 out of 92,901 
 
Canon Kabushiki Kaisha
 patents
silverMedal2 out of 1,576 
 
Mitsumi Electric Company Ltd.
 patents
bronzeMedal1 out of 95 
 
Hitachi-Johnson Controls Air Conditioning, Inc.
 patents

Years Active: 1994-2019

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Areas of Expertise:
Image Projection Apparatus
Optical System
Illumination Optical System
Polarization Conversion
Display Apparatus
Color Splitting
Optical Pickup
Image Display System
Luminous Flux Conversion
Projection Type Display
Phase Compensation
Image Observation
62 patents (USPTO):Explore Patents
1. 10389282 - DC power supply unit and air conditioner using same (2019-08-20),
2. 9057812 - Lens holder driving device capable of easily mounting upper elastic member to outer yoke (2015-06-16),
3. 8957980 - Image pickup apparatus (2015-02-17),
4. 8109637 - Wavelength-selective polarization conversion element for generating two light components having polarization directions and wavelength regions different from each other, illumination optical system, and image projection apparatus including the element (2012-02-07),
5. 7976166 - Optical system for image projection and image projection apparatus including a polarization beam splitting surface (2011-07-12),
6. 7935920 - Illumination optical system including luminous flux conversion system (2011-05-03),
7. 7597446 - Illumination optical system and image projection apparatus (2009-10-06),
8. 7472995 - Wavelength-selective polarization conversion element, projection displaying optical system and image projection apparatus (2009-01-06),
9. 7466368 - Image projection apparatus and adjusting method used for the same (2008-12-16),
10. 7258445 - Polarization splitter, optical unit and image projector (2007-08-21),
11. 7222967 - Image display optical system and projection type image display apparatus (2007-05-29),
12. 7213924 - Image projection apparatus and image projection system (2007-05-08),
13. 7196743 - Image display apparatus having particular phase difference (2007-03-27),
14. 7156520 - Color separating optical system, image display optical system, and projection image display apparatus (2007-01-02),
15. 7137704 - Color splitting/combining optical system and image projecting apparatus (2006-11-21),

Title: **Atsushi Okuyama: Innovator of Advanced Technologies**

Introduction

Atsushi Okuyama is a distinguished inventor based in Tokorozawa, Japan, known for his remarkable contributions to the fields of electrical engineering and technology. With an impressive portfolio of 62 patents, Okuyama has significantly influenced the efficiency and performance of various electronic devices.

Latest Patents

Among his latest innovations are two notable patents. The first is a **DC power supply unit** designed to enhance efficiency while minimizing harmonic currents. This system incorporates a bridge rectification circuit, a reactor, a smoothing capacitor, and an advanced converter control unit. The converter executes various control strategies, including diode rectification and synchronous rectification.

His second patent, a **lens holder driving device**, is engineered to simplify the mounting of an upper elastic member onto an outer yoke. This device includes a lens holder, a driving coil, a magnet, and an elastic member, all meticulously designed to support optical axis adjustments while maintaining precision in lens positioning.

Career Highlights

Okuyama has built a commendable career with prominent companies such as Canon and Mitsumi Electric Company Ltd. His work has continually pushed the boundaries of technology, ensuring that his inventions serve practical purposes in modern applications.

Collaborations

Throughout his career, Okuyama has had the opportunity to collaborate with other esteemed inventors, including Hiroyuki Kodama and Masayuki Abe. These collaborations have further cultivated an environment of innovation and creative problem-solving in the fields they engage in.

Conclusion

Atsushi Okuyama stands out as a remarkable figure in the realm of technological innovation. His ability to create solutions that improve device efficiency and functionality has made a lasting impact on the engineering landscape. With ongoing contributions and collaborations, Okuyama continues to inspire future generations of inventors and engineers.

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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