Kouji Hasegawa

Title: Kouji Hasegawa: Innovator in Cathode-Ray Tube Technology

Introduction

Kouji Hasegawa is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of display technology, particularly through his innovative work on cathode-ray tubes.

Latest Patents

Hasegawa holds a patent for a cathode-ray tube with an electrostatic convergence electrode assembly. This invention features an electron gun sealed in a neck that faces a phosphor screen. The electron gun includes a cathode assembly that emits three electron beams and a main lens region that allows these beams to pass through. The design incorporates a high-voltage electrode positioned closer to the phosphor screen, along with an assembly of electrostatic deflection plates that converge the electron beams into a single spot on the screen. The electrostatic convergence electrode assembly, which may consist of two or three juxtaposed flat electrodes with electron beam passage holes, plays a crucial role in applying an astigmatic effect to the beams.

Career Highlights

Hasegawa is associated with Sony Corporation, a leading company in the electronics industry. His work has contributed to advancements in display technology, enhancing the quality and performance of cathode-ray tubes.

Collaborations

Throughout his career, Hasegawa has collaborated with talented individuals such as Yukinobu Iguchi and Yoshifumi Nakayama. These collaborations have fostered innovation and development in their respective fields.

Conclusion

Kouji Hasegawa's contributions to cathode-ray tube technology exemplify his innovative spirit and dedication to advancing display technology. His patent reflects a significant step forward in the field, showcasing the importance of collaboration and creativity in engineering.