Kunio Ishiyama

Title: **Innovator Spotlight: Kunio Ishiyama**

Introduction

Kunio Ishiyama is a notable inventor based in Mobara, Japan, recognized for his significant contributions to the field of color cathode ray tube technology. With a total of six patents to his name, Ishiyama has played a pivotal role in advancing display technologies, which have been crucial in shaping the visual experiences we encounter today.

Latest Patents

Among his latest innovations is a color cathode ray tube designed with an adjustment magnet assembly at the neck portion. This remarkable invention features a vacuum vessel that includes a panel portion with a phosphor screen, a neck portion housing an inline electron gun, and a funnel portion connecting these components. The electron gun comprises a main lens and cathodes that generate three aligned electron beams. To enhance precision, the tube employs a deflection yoke and a pair of two-pole ring magnets that adjust the trajectory of the electron beams. The unique magnetic flux density distribution of these ring magnets is meticulously calculated to improve alignment, ensuring an optimal visual output.

Another notable patent by Ishiyama involves a similar color cathode ray tube with an emphasis on the arrangement of the 2-pole ring magnets. In this design, the ring magnet is strategically positioned closer to the phosphor screen than the electrostatic main lens of the electron gun assembly, thereby optimizing the performance of the tube and facilitating superior beam deflection.

Career Highlights

Ishiyama has had a distinguished career with influential firms, including Hitachi, Ltd. and Hitachi Automotive Engineering Company, Ltd. These experiences have provided him with a strong foundation in the innovative processes that drive technological advancements in electronics and display systems.

Collaborations

Throughout his career, Ishiyama has collaborated with esteemed colleagues such as Teruaki Odaka and Kentaro Oku. These partnerships have likely enriched his inventive endeavors and have contributed to the development of his notable patents.

Conclusion

Kunio Ishiyama’s work in the realm of color cathode ray tubes showcases his ingenuity and commitment to innovation. His advancements not only enhance technological capabilities but also lead the way for future developments in display technology. As the industry evolves, the impact of his contributions will continue to be felt, underscoring the vital role of inventors in shaping our world.