Cees Ronda

Title: Cees Ronda: Innovator in White Light Emitting Diodes

Introduction

Cees Ronda is a notable inventor based in Aachen, Germany. He has made significant contributions to the field of light-emitting devices, particularly in the development of white light emitting diodes (LEDs). His innovative work has implications for various applications in lighting technology.

Latest Patents

Cees Ronda holds a patent for a white light emitting diode. This light-emitting device comprises a UV-diode with a primary emission range of 300 nm to 370 nm. It features a phosphor layer that includes a combination of a blue-emitting phosphor with an emission band of 430 nm to 490 nm, a green-emitting phosphor with an emission band of 520 nm to 570 nm, and a red-emitting phosphor with an emission band of 590 nm to 630 nm. This combination emits high-quality white light, achieving a color-rendering index (CRI) of approximately 90 at a color temperature of 4000 K. The color rendition is dependent solely on the composition of the three phosphors, allowing for easy control and regulation.

Career Highlights

Cees Ronda is associated with U.S. Philips Corporation, where he has been instrumental in advancing LED technology. His work has not only contributed to the company's portfolio but has also influenced the broader lighting industry.

Collaborations

Cees has collaborated with notable colleagues such as Thomas Justel and Hans Nikol. Their combined expertise has furthered the development of innovative lighting solutions.

Conclusion

Cees Ronda's contributions to the field of white light emitting diodes exemplify the impact of innovation in lighting technology. His patent and collaborative efforts continue to shape the future of efficient and high-quality lighting solutions.