Hisatoshi Uehara

Title: Hisatoshi Uehara: Innovator in Retardation Film Technology

Introduction

Hisatoshi Uehara is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of optical materials, particularly in the development of retardation films and related technologies. With a total of 9 patents to his name, Uehara's work has had a substantial impact on various applications in the optical industry.

Latest Patents

Uehara's latest patents include innovations such as a retardation film, a circularly-polarizing plate, and an image-displaying device. The retardation film he developed is designed to excel in optical properties, heat resistance, mechanical properties, and reliability. This invention features a thermoplastic resin and is composed of a single layer. It achieves a wavelength dispersion ratio of retardations at 450 nm and 550 nm between 0.75 and 0.92. Additionally, the birefringence at 550 nm and the wavelength dispersion satisfy a specific relationship, ensuring high performance. His work on the circularly-polarizing plate also incorporates a resin with positive refractive index anisotropy, enhancing its optical capabilities.

Career Highlights

Throughout his career, Uehara has worked with notable companies such as Mitsubishi Chemical Corporation and Nitto Denko Corporation. His experience in these organizations has allowed him to refine his expertise in optical materials and contribute to groundbreaking innovations in the field.

Collaborations

Uehara has collaborated with esteemed colleagues, including Shingo Namiki and Yuuichi Hirami. These partnerships have fostered a creative environment that has led to the development of advanced technologies in optical applications.

Conclusion

Hisatoshi Uehara's contributions to the field of optical materials, particularly through his innovative patents, have established him as a key figure in the industry. His work continues to influence advancements in optical technology and applications.