Norio Ishii

Title: Norio Ishii: Innovator in Optical Technologies

Introduction

Norio Ishii is a prominent inventor based in Tokyo, Japan, known for his significant contributions to optical technologies. With a total of 11 patents to his name, Ishii has made remarkable advancements in the field of optical films and laminated glass.

Latest Patents

Ishii's latest patents include innovations such as an optical film, a polarizing plate, an image display device, and an optical film selection method. His optical film is designed to suppress rainbow unevenness when viewed with the naked eye without increasing the in-plane phase difference. This optical film features a low-refractive index layer on a biaxially stretched plastic film, which has an in-plane phase difference of 2500 nm or less. The low-refractive index layer is positioned on the outermost surface, and the optical film meets specific conditions regarding ΔEab, calculated from differences in L*, a*, and b* values obtained under defined conditions.

Additionally, Ishii has developed a laminated glass that reduces the occurrence of voids and liquid crystal accumulation. This laminated glass is structured with a first glass plate, a first intermediate film, a liquid crystal film, a second intermediate film, and a second glass plate, layered in that order. The design ensures that the first and second glass plates have a larger outer shape than the liquid crystal film, with spacers provided in regions where the liquid crystal film is absent.

Career Highlights

Throughout his career, Ishii has worked with notable companies such as Dai Nippon Printing Co., Ltd. and Mitsui Engineering and Shipbuilding Company Limited. His work in these organizations has allowed him to refine his expertise in optical technologies and contribute to various innovative projects.

Collaborations

Ishii has collaborated with talented individuals in his field, including coworkers Keisuke Miura and Yusuke Hagiwara. These collaborations have further enhanced his innovative capabilities and led to the development of cutting-edge technologies.

Conclusion

Norio Ishii's contributions to optical technologies through his patents and collaborations highlight his role as a leading inventor in the industry. His work continues to influence advancements in optical films and laminated glass, showcasing the importance of innovation in this field.