This inventor holds 2 USPTO granted patents and 4 published patent applications. Top assignees: Mitsubishi Gas Chemical Trading, Inc., National Institute of Advanced Industrial Science and Technology. Active years: 2025.
Company Filing History:
2 out of 4 
2 out of 1,762 
Years Active: 2025
Title: Ryohei Hokari: Innovator in Antireflection Structures and Wire-Grid Polarizers.
Introduction
Ryohei Hokari is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of optical technologies, particularly through his innovative patents. With a total of 2 patents, Hokari's work focuses on enhancing the performance of optical devices.
Latest Patents
Hokari's latest patents include an antireflection structure and a wire-grid polarizer. The antireflection structure comprises a transparent substrate with a multitude of holes featuring U-shaped or V-shaped cross-sections. This design is aimed at minimizing reflection and improving light transmission. The specifications detail that the average diameter of the openings ranges from 50 nm to 300 nm, with a depth of each hole between 80 nm to 250 nm. The metal oxide film's thickness increases with the depth of the holes, effectively reducing depth discrepancies.
The wire-grid polarizer, on the other hand, consists of metal reflectors embedded in grooves arranged in a one-dimensional grid pattern. The average width of these reflectors is 200 nm or less, and they are designed to gradually thin toward the tip. This innovative design enhances the polarizing efficiency of the device.
Career Highlights
Hokari has worked with esteemed organizations such as the National Institute of Advanced Industrial Science and Technology and Mitsubishi Gas Chemical Trading, Inc. His experience in these institutions has allowed him to refine his skills and contribute to cutting-edge research in optical technologies.
Collaborations
Throughout his career, Hokari has collaborated with talented individuals, including Kazuma Kurihara and Kyohei Takakuwa. These partnerships have fostered a creative environment that has led to the development of innovative solutions in the field.
Conclusion
Ryohei Hokari's contributions to optical technology through his patents demonstrate his commitment to innovation. His work continues to influence advancements in the industry, showcasing the importance of research and collaboration in driving technological progress.