Naotoshi Matsuda

Title: The Innovations of Naotoshi Matsuda

Introduction

Naotoshi Matsuda, an accomplished inventor based in Chigasaki, Japan, holds an impressive portfolio of 53 patents. His groundbreaking work primarily focuses on light-emitting technologies, particularly in the development of advanced phosphors and light sources, which have far-reaching applications across various industries.

Latest Patents

Among Matsuda's latest innovations is a patented white light source that incorporates a combination of light-emitting diodes (LEDs) and phosphors. This invention features a cerium-activated yttrium aluminum garnet-based phosphor, with specific characteristics regarding the light emission spectrum. Notably, it ensures that the largest maximum value among at least one maximum present in the wavelength range of 400 nm to 500 nm does not exceed a ratio of 1.9 when compared to the minimum value adjacent in wavelength.

Another significant innovation of Matsuda is a europium-activated alkaline-earth chloroapatite phosphor. This phosphor is defined by the composition formula: (MEu)(PO)Cl, where 'M' represents an alkaline-earth element, including at least strontium and barium, with an atomic ratio defined within specific parameters (0.04 ≤ x ≤ 0.2). This invention ensures 90% or higher light absorptance at a wavelength of 400 nm, while limiting absorptance at a wavelength of 650 nm to 2% or less, showcasing a significant advancement in phosphor technology.

Career Highlights

Matsuda has worked with reputable companies such as Toshiba Corporation and Toshiba Materials Co., Ltd. Over the years, he has made remarkable contributions to the field of light-emitting devices, significantly enhancing their efficiency and application potential.

Collaborations

Throughout his career, Matsuda has collaborated with talented professionals, including Keiko Albessard and Yumi Fukuda. These partnerships have undoubtedly enriched his work and fostered an environment of innovation and creativity in the realm of light technology.

Conclusion

Naotoshi Matsuda's contributions to the field of lighting technology through his numerous patents have established him as a prominent figure in the innovation landscape. His work not only enhances the efficiency and effectiveness of light sources but also paves the way for future advancements in the field. As technology continues to evolve, the impact of his inventions will likely resonate for years to come.