Hiroto Itoi

Title: Hiroto Itoi: Innovator in Backlight Technology

Introduction

Hiroto Itoi is a prominent inventor based in Anan, Japan. He has made significant contributions to the field of backlight technology, holding a total of 4 patents. His innovative designs have advanced the functionality and efficiency of lighting systems in various applications.

Latest Patents

One of his latest patents is for a backlight unit and method of lighting a backlight unit. This invention includes a light-guide plate, a light source, and a phosphor sheet containing a red phosphor material. The light source is composed of blue light emitting diodes and green semiconductor lasers. The red phosphor material is excited by light from the blue light emitting diodes, which then emits red light. The phosphor sheet is solid and positioned on a surface of the light-guide plate, creating a first mixing light emission surface and a second mixing light emission surface. This design allows for the emission of green light from the green semiconductor lasers and blue light from the blue light emitting diodes toward the phosphor sheet, resulting in a comprehensive light output.

Another notable patent by Itoi is for a backlight unit and liquid crystal display device. This invention features a light-guide plate and a light source that is optically coupled with the light-guide plate. Light is input from a plane of the light-guide plate, producing white light output from the first principal plane of the light-guide plate. The light source includes multiple blue light emitting diodes, red phosphor material, and several green semiconductor lasers. The phosphor sheet is strategically placed on the surface of the light-guide plate to enhance the overall light quality.

Career Highlights

Hiroto Itoi has worked with notable companies such as Nichia Corporation and Dai Nippon Printing Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the lighting industry.

Collaborations

Throughout his career, Itoi has collaborated with talented individuals, including Ryosuke Wakaki and Ken Katsuragi. These partnerships have fostered innovation and creativity in his projects.

Conclusion

Hiroto Itoi is a distinguished inventor whose work in backlight technology has led to significant advancements in the field. His patents reflect a commitment to innovation and excellence, making him a key figure in the industry.