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For the Inventor, By the Inventor

Tokyo, Japan

Isao Ishibai

This inventor holds 13 USPTO granted patents. Top assignee: Hoya Corporation. Active years: 1981-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Isao Ishibai. Retrieved from https://idiyas.com/inventor/isao-ishibai

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

USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 1.8

ph-index = 6

Forward Citations = 114(Granted Patents)


Location History:

  • Toyko, JP (1984)
  • Machida, JP (1981 - 1991)
  • Tokyo, JP (1984 - 1993)

Company Filing History:

goldMedal13 out of 2,569 
 
Hoya Corporation
 patents

Years Active: 1981-1993

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13 patents (USPTO):Explore Patents
1. 5204781 - Infinite large-aperture lens system with aspherical surfaces (1993-04-20),
2. 5166830 - Aspherical lens system for a bar code sensor (1992-11-24),
3. 5087115 - Aspherical glass lens element suitable for an object lens element of a (1992-02-11),
4. 5020888 - Aspherical glass lens element suitable for a collimator lens (1991-06-04),
5. 5004330 - Aspherical glass lens element formed by a low dispersion glass material (1991-04-02),
6. 5002374 - Finite conjugation large-aperture lens with aspherical surfaces (1991-03-26),
7. 4776101 - Method and apparatus for testing aspherical lenses (1988-10-11),
8. 4650297 - Binocular optical system with automatic focusing mechanism (1987-03-17),
9. 4488037 - Automatic focusing binocular (1984-12-11),
10. 4436386 - Binoculars housing (1984-03-13),
11. 4293187 - Binocular optical system with automatic focussing (1981-10-06),
12. 4284325 - Eye span adjustment mechanism for binoculars (1981-08-18),
13. 4262988 - Binoculars with automatic focusing system (1981-04-21),

Title: The Innovative Contributions of Isao Ishibai

Introduction

Isao Ishibai is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, holding a total of 13 patents. His work focuses on developing advanced lens systems that enhance optical communication and sensor applications.

Latest Patents

One of Ishibai's latest patents is the "Infinite large-aperture lens system with aspherical surfaces." This innovative lens system is designed to read optical information and is applicable in optical communication transmission systems. The lens boasts a large aperture despite its very small focal length, thanks to the use of glass with a high refractive index and a high Abbe number, which provides excellent aberration characteristics. The manufacturing process utilizes ultra-precision press-molding technology, ensuring high-quality production.

Another notable patent is the "Aspherical lens system for a bar code sensor." This optical lens system incorporates first and second meniscus lenses arranged back to back along the optical axis on both object and image sides. These lenses are identical in configuration and optical characteristics, featuring effective aspherical surfaces defined by predetermined formulae. The design ensures optimal performance for bar code sensors.

Career Highlights

Isao Ishibai is currently associated with Hoya Corporation, a leading company in optical products. His work at Hoya has allowed him to push the boundaries of optical technology and contribute to advancements in the field.

Collaborations

Throughout his career, Ishibai has collaborated with notable colleagues, including Kunimitsu Kobayashi and Hitonobu Otsu. These collaborations have fostered innovation and have led to the development of cutting-edge optical technologies.

Conclusion

Isao Ishibai's contributions to optical technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence advancements in optical communication and sensor applications.

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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