Eizaburo Hamano

Title: Eizaburo Hamano: Innovator in Picture Tube Technology

Introduction

Eizaburo Hamano is a notable inventor from Kumagaya, Japan, recognized for his contributions to the field of picture tube technology. With a total of 8 patents to his name, Hamano has made significant advancements that have influenced the design and functionality of color picture tubes.

Latest Patents

One of Hamano's latest patents is a mask-focusing color picture tube. This invention comprises an evacuated envelope, means to generate a number of electron beams, and a display screen featuring a multitude of phosphor stripes that luminesce in different colors. The design includes a plurality of masks spaced at predetermined distances, each with a number of apertures arranged in rows. Each electron beam is assigned to a phosphor stripe of a respective color through the corresponding mask aperture. An improvement in this design features at least one of the masks having projections on at least one side, separated by the rows of apertures.

Another significant patent is for a picture tube with an electron gun having a non-circular aperture. This invention includes an envelope with a phosphor screen and an electron gun that generates an electron beam, which is deflected by magnetic fields. The electron gun consists of a triode section and a focusing section along the electron beam's path. The triode section is equipped with an electrode containing a non-circular aperture, with major and minor axes of symmetry. The focusing section is designed to form an electrostatic focusing lens with a vertical focal length that is more elongated than the horizontal focal length.

Career Highlights

Eizaburo Hamano has worked with prominent companies such as Tokyo Shibaura Electric Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in the realm of picture tube technology.

Collaborations

Throughout his career, Hamano has collaborated with notable individuals, including Shigeo Takenaka and Tetsuo Komatsu. These partnerships have contributed to the advancement of technology in their respective fields.

Conclusion

Eizaburo Hamano's contributions to picture tube technology have left a lasting impact on the industry. His innovative patents and collaborations highlight his role as a significant figure in the field of electronics.