Kenjiro Hamanaka

Title: Kenjiro Hamanaka: Innovator in Optical Systems

Introduction

Kenjiro Hamanaka is a notable inventor based in Tokorozawa, Japan. He has made significant contributions to the field of optical systems, holding a total of 3 patents. His work focuses on enhancing the performance and reliability of optical recording and playback technologies.

Latest Patents

Hamanaka's latest patents include a focus error detection device for an optical recording/playing back system. This device utilizes a light detector composed of four light receiving elements arranged symmetrically. It generates multiplication signals by multiplying the output signals of two symmetrically arranged light receiving elements. These signals are then processed to produce a focus error signal, effectively reducing the offset caused by deviations in the light beam's position.

Another significant patent is the tracking signal error generator for optical information devices. This invention features multiple light receptors that receive reflected light fluxes from a recording medium. The tracking error signal is determined based on the differences between the output signals of these receptors, allowing for precise tracking of the recording track.

Career Highlights

Kenjiro Hamanaka is currently employed at Pioneer Electronic Corporation, where he continues to innovate in the field of optical technology. His work has been instrumental in advancing the capabilities of optical devices, making them more efficient and reliable.

Collaborations

Hamanaka has collaborated with notable coworkers such as Shinsaku Nozu and Katsuharu Sato. Their combined expertise has contributed to the development of cutting-edge optical technologies.

Conclusion

Kenjiro Hamanaka's contributions to optical systems through his innovative patents have significantly impacted the industry. His work continues to pave the way for advancements in optical recording and playback technologies.