Toshimasa Umezawa

Title: Innovations of Toshimasa Umezawa

Introduction

Toshimasa Umezawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, holding a total of four patents. His work focuses on enhancing the capabilities of cameras and photodetectors, addressing critical challenges in sensitivity and data reception.

Latest Patents

One of Umezawa's latest innovations is a TOF (Time of Flight) camera. This camera is designed to provide high sensitivity even when the output to the outside is weak. It includes a light source, a demultiplexing unit that separates light into first and second demultiplexed light, and a first modulator that modulates the first demultiplexed light to create a modulated signal. The camera also features an emission unit that emits this modulated signal and a phase imparting means that applies various phase shifts to the second demultiplexed light. Additionally, it has a multiplexing unit that combines light from outside the camera with the phase-imparted local light, allowing for accurate analysis of the position or distance of a subject.

Another notable patent is the high-speed photodetector array. This invention enables the reception of massively parallel optical communication, allowing for instantaneous reception of large volumes of data for multi-mode or multi-core transmission. The photodetector consists of a two-dimensional array of photodetectors, each with a light reception area measuring no more than 100 micrometers. The design ensures that the photodetectors are spaced apart adequately to optimize performance.

Career Highlights

Umezawa has worked with notable organizations such as Yokogawa Electric Corporation and the National Institute of Information and Communications Technology. His experience in these institutions has contributed to his expertise in optical technologies and innovations.

Collaborations

Throughout his career, Umezawa has collaborated with esteemed colleagues, including Morio Wada and Masayuki Suehiro. These partnerships have fostered a collaborative environment that has led to significant advancements in their respective fields.

Conclusion

Toshimasa Umezawa's contributions to optical technology through his innovative patents demonstrate his commitment to advancing the field. His work continues to influence the development of high-performance cameras and photodetectors, showcasing the importance of innovation in technology.