Tadatsugu Onuma

Title: Innovations of Tadatsugu Onuma

Introduction

Tadatsugu Onuma is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of holography, holding three patents to his name. His work focuses on the development of advanced hologram plates and their fabrication processes.

Latest Patents

One of his latest patents is a hologram plate and its fabrication process. This invention provides a hologram plate that is utilized with the double-focus replication process. It is integrated with a spacer to enhance marring resistance and includes a light-absorbing layer that allows zero-order light and first-order light to maintain substantially the same intensity. The hologram plate consists of an array of collective element holograms designed to diffract parallel light incident at a specific wavelength and angle, converging the light onto a specific focal length position. The structure of the hologram plate is multilayered, comprising a first transparent substrate, a hologram layer, an adhesive layer, and a second transparent substrate. The second transparent substrate defines a surface that comes into contact with a hologram photosensitive material during the replication process.

Career Highlights

Tadatsugu Onuma is associated with Dai Nippon Printing Co., Ltd., where he continues to innovate in the field of holography. His work has been instrumental in advancing the technology used in hologram production.

Collaborations

He has collaborated with notable coworkers, including Keiko Sekine and Hiroshi Kishimoto, contributing to various projects and innovations in their field.

Conclusion

Tadatsugu Onuma's contributions to holography through his patents and collaborations highlight his role as a significant inventor in the industry. His innovative approaches continue to influence the development of holographic technologies.