Naokatsu Yamamoto

Title: Naokatsu Yamamoto: Innovator in Optical Technology

Introduction

Naokatsu Yamamoto is a prominent inventor based in Koganei, Japan. He has made significant contributions to the field of optical technology, holding a total of seven patents. His work focuses on enhancing camera sensitivity and improving optical modulation systems.

Latest Patents

One of his latest innovations is a TOF (Time of Flight) camera designed to provide high sensitivity even when the output to the outside is weak. This camera incorporates 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 emission unit emits this modulated signal, while a phase imparting means applies various phase shifts to the second demultiplexed light, resulting in phase-imparted local light. The camera also features a multiplexing unit that combines incident light and phase-imparted local light, a light receiving element for detecting the multiplexed light, and an analysis processing unit that determines the position of a subject or the distance between the subject and the camera.

Another notable patent involves technology for evaluating optical modulators based on phase recovery. This system estimates the imbalance between the electrical-optical responses of an in-phase (I) channel and a quadrature (Q) channel in an optical amplitude and phase modulator. It includes an optical detector, an analog-digital converter, and an imbalance operation unit that utilizes information from the modulation signal and intensity data from the digitalized output to estimate the imbalance.

Career Highlights

Naokatsu Yamamoto is affiliated with the National Institute of Information and Communications Technology, Incorporated. His work at this institution has allowed him to push the boundaries of optical technology and contribute to advancements in the field.

Collaborations

He has collaborated with notable colleagues such as Tetsuya Kawanishi and Takahide Sakamoto, further enhancing the impact of his research and innovations.

Conclusion

Naokatsu Yamamoto's contributions to optical technology through his patents and collaborations highlight his role as a leading inventor in the field. His innovative solutions continue to pave the way for advancements in camera technology and optical modulation systems.