Location History:
- Chiba, JP (1988)
- Tokyo, JP (1990)
- Kanagawa, JP (1995 - 1996)
Company Filing History:
Years Active: 1988-1996
Title: The Innovations of Yoshifumi Nakayama
Introduction
Yoshifumi Nakayama is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of electron gun technology, particularly in the development of cathode-ray tubes. With a total of 4 patents to his name, Nakayama's work has had a lasting impact on the electronics industry.
Latest Patents
One of Nakayama's latest patents is an electron gun for color cathode-ray tubes. This innovative design features three cathodes arranged in parallel, along with multiple grid electrodes and a convergence deflector. The electron gun is equipped with a tetrode magnetic field generator that includes a pair of permanent magnets, which help to correct astigmatic effects on the central beam. Additionally, an astigmatism eliminator is integrated into the design to address aberrations in the side beams, ensuring precise convergence of the electron beams.
Another significant patent is for a cathode-ray tube that includes an electrostatic convergence electrode assembly. This assembly is strategically placed between the high-voltage electrode and the deflection plates, allowing for the convergence of three electron beams into a single spot on the phosphor screen. The design incorporates multiple flat electrodes with electron beam passage holes, which can be selectively energized to apply an astigmatic effect to the beams.
Career Highlights
Yoshifumi Nakayama has had a distinguished career at Sony Corporation, where he has been instrumental in advancing technologies related to cathode-ray tubes. His innovative designs have contributed to the enhancement of image quality in electronic displays, making him a key figure in the field.
Collaborations
Throughout his career, Nakayama has collaborated with talented individuals such as Yukinobu Iguchi and Koji Ichida. These partnerships have fostered a creative environment that has led to groundbreaking advancements in electron gun technology.
Conclusion
Yoshifumi Nakayama's contributions to the field of electronics, particularly in the development of cathode-ray tubes, have established him as a prominent inventor. His innovative patents continue to influence the industry, showcasing the importance of creativity and collaboration in technological advancements.