Yukihiro Sugawara

Title: Yukihiro Sugawara: Innovator in Optical Disc Technology

Introduction

Yukihiro Sugawara is a notable inventor from Yamanashi-ken, Japan, recognized for his contributions to optical disc technology. His innovative work has led to the development of a high-density optical disc configuration, which has implications for data storage and retrieval.

Latest Patents

Sugawara holds a patent for a high-density optical disc configuration. This optical disc includes two transparent substrate layers, each featuring a recording surface with a plurality of pits arranged either concentrically or spirally. These pits represent the information stored on the recording surface. Each substrate layer has a thickness of 0.6 ± 0.03 mm. A reflecting layer is formed on each recording surface, and the inclining angle between a pit's inner wall and the normal line of each substrate layer is set between 20° and 55°. The pit depth is defined as λ/3.5N - λ/2.7N, where λ is the wavelength of the laser beam used for reading the information, and N is the index of refraction of each substrate layer.

Career Highlights

Throughout his career, Yukihiro Sugawara has worked with prominent companies in the electronics industry. He has been associated with Pioneer Video Corporation and Pioneer Electronic Corporation, where he contributed to advancements in optical technologies.

Collaborations

Sugawara has collaborated with various professionals in his field, including his coworker Satoru Fukuoka, enhancing the development of innovative technologies.

Conclusion

Yukihiro Sugawara's work in optical disc technology exemplifies the impact of innovation on data storage solutions. His patent and career achievements highlight his significant contributions to the field.