Nobuyuki Tsuda

Title: **Innovative Contributions of Nobuyuki Tsuda in Cathode-Ray Tube Technology**

Introduction

Nobuyuki Tsuda, an esteemed inventor based in Kawasaki, Japan, has made significant strides in the field of projection cathode-ray tube (CRT) technology. With a total of two patents to his name, Tsuda's work has greatly influenced the quality and performance of projection video apparatus, ensuring brighter and more stable images.

Latest Patents

Tsuda's latest innovations include two noteworthy patents related to projection CRT technology. The first patent titled "Projection CRT with a Green Emitting Terbium Activated Lanthanum" involves a cathode-ray tube designed with a green-emitting screen that utilizes a terbium-activated lanthanum oxychloride phosphor. This phosphor not only demonstrates a luminance maximum at a minimal beam size, which is advantageous for high-resolution images, but it also remains chemically stable at elevated temperatures. Notably, the emission efficiency of this phosphor shows no substantial decrease, even at temperatures around 80 degrees Celsius, achieving an emission luminance that is double that of prior art.

The second patent, "Projection Type Green Cathode Ray Tube, Method for Manufacturing," focuses on a projection type green CRT that achieves improved brightness while withstanding higher temperatures on the faceplate. This patent outlines a method for manufacturing a phosphor screen using a cerium-activated calcium sulfide phosphor, free of barium ions, to enhance the brightness of images without significant changes over time.

Career Highlights

Tsuda is currently associated with Tokyo Shibaura Denki Kabushiki Kaisha, a leading company in the electronics sector, where he continues to innovate and contribute to advancements in projection technology. His work has not only improved product performance but has also set new standards for brightness and stability in CRTs.

Collaborations

Throughout his career, Tsuda has had the pleasure of collaborating with talented professionals such as Masaaki Tamatani and Fukaya Ajiro. Their collective efforts have driven significant advancements in the technology used in projection devices, helping to push the boundaries of what's possible in video imaging.

Conclusion

Nobuyuki Tsuda's innovative contributions to cathode-ray tube technology exemplify his dedication to enhancing visual quality in projection systems. His patents serve as a testament to his ingenuity and the impact he has made in the field. As technology continues to evolve, his work will undoubtedly remain a cornerstone in the realm of video apparatus innovation.