John F Kelso

Title: **John F. Kelso: Innovator in Wavelength Conversion Technology**

Introduction

John F. Kelso, an esteemed inventor based in Exeter, NH, has made significant contributions to the field of optical technologies. With a total of six patents to his name, Kelso's work focuses on advancements in wavelength conversion and light-emitting devices. His innovative approaches have positioned him as a key player in the development of efficient lighting solutions.

Latest Patents

Kelso's most recent patents include a groundbreaking wavelength converter and a light-emitting device that incorporates this technology. The ceramic wavelength converter he designed utilizes an alumina-based material with a distinctive surface layer containing a second phase of alumina, ideally structured as alumina crystallites. This design, formed through a sintering process, ensures that the bulk ceramic remains substantially transparent. The synergy between the ceramic wavelength converter and a light-emitting diode creates a powerful light-emitting device.

Another notable patent involves a method for creating a single crystal wavelength conversion element derived from a polycrystalline counterpart. This innovative methodology allows for greater flexibility in producing single crystal elements compared to traditional melt-grown techniques. The advantages of this approach include enhanced activator contents, the ability to form intricate shapes without further machining, and achieving wider activator gradients with higher growth rates at lower temperatures.

Career Highlights

Kelso has held key roles in prominent companies such as Osram Sylvania Inc. and Osram Opto Semiconductors GmbH. His tenure at these organizations underscores his dedication to advancing optical technologies, contributing to a variety of innovative projects that leverage his expertise in wavelength conversion and light emission.

Collaborations

Throughout his career, Kelso has collaborated with esteemed colleagues, including Alan Piquette and Nathan M. Zink. These partnerships have facilitated the exchange of ideas and knowledge, further enhancing the development of pioneering technological solutions in the field.

Conclusion

John F. Kelso is a trailblazer in innovation, particularly within the realm of wavelength conversion technology. His patented inventions represent significant advancements in light-emitting devices, showcasing his commitment to推动ing the frontiers of optical engineering. With a robust portfolio and influential collaborations, Kelso continues to contribute to the evolution of lighting technologies, setting new standards for future developments.