Company Filing History:
Years Active: 2006-2007
Title: Innovations of Hirofumi Ueno in Electron Gun Technology
Introduction
Hirofumi Ueno is a notable inventor based in Ibaraki, Japan, recognized for his contributions to electron gun technology. He holds two patents that showcase his innovative approach to improving the performance of color cathode ray tube apparatuses.
Latest Patents
Ueno's latest patents include an in-line type electron gun and a color cathode ray tube apparatus utilizing this technology. The in-line type electron gun employs a field superimposing type main lens system, which enhances focusing properties by minimizing the size of the electron beam spot across the phosphor screen. This design avoids the need for a mechanically large structure. The main lens consists of two tubular electrodes positioned opposite each other, with plate-like field correction electrodes attached to the sides. The openings formed by the edge and folded portions of the electrodes create an elongated flat-sided oval aperture, optimizing the electron beam's performance.
The color cathode ray tube apparatus features a main lens composed of a focus electrode, an intermediate electrode, and an anode electrode arranged in sequence along the electron beam's path. The focus and anode electrodes share a common electron beam passage aperture, which is designed to reduce moire effects while maintaining excellent focus across the phosphor screen. This innovation does not increase the cost of the driving circuit or compromise the withstand voltage characteristics.
Career Highlights
Hirofumi Ueno is currently employed at Matsushita Toshiba Picture Display Co., Ltd., where he continues to develop advanced technologies in display systems. His work has significantly impacted the field of electron optics and display technology.
Collaborations
Ueno collaborates with Tsutomu Takekawa, contributing to the advancement of their shared projects and innovations in the industry.
Conclusion
Hirofumi Ueno's innovative patents in electron gun technology demonstrate his commitment to enhancing display performance. His contributions continue to influence the development of high-quality visual technologies.
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