Yuuji Kokumai

Title: Yuuji Kokumai: Innovator in Position Detection Technology.

Introduction

Yuuji Kokumai is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of position detection technology. His innovative work has led to the development of a patent that enhances the precision of mark position detection.

Latest Patents

Kokumai holds a patent for a "Position detecting method, position detecting unit, exposure method, exposure apparatus, and device manufacturing method." This invention involves obtaining an imaging signal, referred to as the raw waveform, from an image captured by an image pick-up device. The modified waveform is derived from the raw waveform through a waveform modifying unit. By utilizing both the raw and modified waveforms, the mark information calculating unit can determine essential mark information, such as the estimated mark position. Consequently, the position calculating unit detects the positional information of the mark based on multiple pieces of mark information, allowing for precise detection of the mark position, even in the presence of noise signals.

Career Highlights

Kokumai is currently employed at Nikon Corporation, a leading company in imaging and optical products. His work at Nikon has allowed him to focus on advancing technologies that improve imaging and detection methods. His dedication to innovation is evident in his patent and ongoing projects.

Collaborations

Kokumai collaborates with Kouji Yoshida, a fellow innovator at Nikon Corporation. Their partnership exemplifies the collaborative spirit within the company, fostering advancements in technology.

Conclusion

Yuuji Kokumai's contributions to position detection technology highlight his role as a significant inventor in the field. His patent demonstrates a commitment to enhancing precision in imaging and detection methods. His work continues to influence advancements in technology at Nikon Corporation.