Koichi Umezawa

Title: Koichi Umezawa: Innovator in Liquid Crystal Technology

Introduction

Koichi Umezawa is a notable inventor based in Kodaira, Japan. He has made significant contributions to the field of liquid crystal technology, holding a total of 4 patents. His work has been instrumental in advancing the capabilities of liquid crystal projectors.

Latest Patents

Umezawa's latest patents include innovations in liquid crystal projectors and projection lens units. One of his key inventions is a liquid crystal projector that features an illuminating optical system, which includes a light source and a color separating optical system. This system separates illuminating light rays into three colors. The projector also comprises a projection lens unit that includes a projection lens and a cross dichroic prism, along with multiple liquid crystal panels arranged around the prism. The design ensures that the projector maintains a compact size, measuring 263 mm by 318 mm or below, with a display screen size of 0.9 inches. Additionally, a cooling fan is strategically placed beside the projection lens to cool the liquid crystal panels effectively.

Career Highlights

Throughout his career, Umezawa has worked with prominent companies such as Hitachi, Ltd. and Hitachi Video and Information Systems, Inc. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the field of optics and display systems.

Collaborations

Umezawa has collaborated with notable colleagues, including Nobuhiko Konuma and Hidetomo Yoshimura. These partnerships have fostered innovation and have been crucial in the development of his patented technologies.

Conclusion

Koichi Umezawa's contributions to liquid crystal technology have had a lasting impact on the industry. His innovative designs and patents continue to influence the development of advanced projection systems.