Katsuya Takemasa

Title: Katsuya Takemasa: Innovator in Optical Materials

Introduction

Katsuya Takemasa is a notable inventor based in Shizuoka, Japan. He has made significant contributions to the field of optical materials, holding a total of 2 patents. His work focuses on enhancing the functionality and efficiency of plastic optical fibers and heat-sensitive recording materials.

Latest Patents

Takemasa's latest patents include a "Preform for plastic optical material, production method thereof" and an "Optical coupling method of plastic optical fiber and connector used for optical coupling." The first patent describes a plastic optical fiber (POF) that features an inner core with a specific refractive index distribution. The design ensures that the ratio Ra/Rb of the outer diameter of the inner core to the outer core falls within the range of 0.67 to 0.87. This configuration allows for an outgoing beam from the POF to maintain a parallel area of at least 200 µm, enabling a space of at least 200 mm between the exit light and a light-receiving device without the need for additional collimating members. His second patent involves a heat-sensitive recording material that consists of a support with a color-developing layer and at least one UV-absorbing layer. This layer has a light transmittance of 70% or less at 400 nm, 5% or less at 370 nm, and 70% or more across the entire visible light spectrum.

Career Highlights

Throughout his career, Takemasa has worked with prominent companies such as Fuji Photo Film Company, Limited and Fujifilm Corporation. His experience in these organizations has allowed him to develop innovative solutions in optical technology.

Collaborations

Takemasa has collaborated with notable colleagues, including Naotaka Wachi and Ken Iwakura. Their combined expertise has contributed to advancements in the field of optical materials.

Conclusion

Katsuya Takemasa is a distinguished inventor whose work in optical materials has led to significant advancements in the industry. His patents reflect a commitment to innovation and practical applications in technology.