This inventor holds 37 USPTO granted patents and 3 published patent applications, primarily in Photocathode Technology. Top assignees: Hamamatsu-Photonics K.k., Hamamatsu Photonics Kabushiki Kaisha. Active years: 1986-2016.
Location History:
- Shizuoka, JP (1992)
- Hamamatsu, JP (1986 - 2016)
Company Filing History:
36 out of 3,132Â 
1 out of 134Â 
Years Active: 1986-2016
Areas of Expertise:
Title: Innovations by Minoru Niigaki: A Pioneer in Photodetector Technology
Introduction
Minoru Niigaki, based in Hamamatsu, Japan, has made remarkable contributions to the field of photodetector technology with a total of 37 patents to his name. His innovative designs have significantly advanced the capabilities of optical devices, particularly in relation to the interaction of light with materials.
Latest Patents
One of Niigaki's notable recent inventions is a photodetector that features a multilayer structure. This device comprises a first layer made of either a first metal or a first semiconductor, a semiconductor structure layer strategically mounted on the first layer, designed to excite an electron through plasmon resonance. The photodetector is further enhanced by a second layer, which is crafted from a second metal or semiconductor.
Moreover, his inventions also include various advancements in photocathode technology. Niigaki's designs for field assist type photocathodes and arrays focus on the interaction between light and surface plasmons. When light encounters the antenna layer of the photocathode, specific wavelengths couple with surface plasmons, resulting in the emission of near-field light from a through hole. The intensity of this emitted near-field light is not only proportional to, but also surpasses, the intensity of the incident light, specifically tailored for absorption in a photoelectric conversion layer. Such innovations facilitate the generation of photoelectrons, enhancing the efficiency of light-to-electrical conversion in these devices.
Career Highlights
Throughout his career, Minoru Niigaki has been associated with prominent companies in the photonics sector, including Hamamatsu Photonics K.K. and Hamamatsu Photonics Kabushiki Kaisha. His work has consistently focused on developing cutting-edge technologies that leverage the properties of light for various applications.
Collaborations
During his tenure, Niigaki has collaborated with notable colleagues such as Toru Hirohata and Masami Yamada. These partnerships have enriched his research and fostered an environment of creativity and innovation, allowing for the exchange of ideas that have led to the advancement of photonics technology.
Conclusion
Minoru Niigaki stands out as a prominent inventor in the field of photodetector technology. His significant contributions, encapsulated in his extensive portfolio of patents, demonstrate his commitment to pushing the boundaries of optical technology. As he continues to innovate, his work is poised to influence the future of photonics, paving the way for new applications and advancements in this vital field.