Cornelis A Jacobs

Title: Cornelis A Jacobs: Innovator in High-Pressure Discharge Lamps

Introduction

Cornelis A Jacobs is a notable inventor based in Eindhoven, Netherlands. He has made significant contributions to the field of high-pressure discharge lamps, holding a total of 14 patents. His work focuses on improving the efficiency and functionality of these lighting technologies.

Latest Patents

One of Jacobs' latest inventions is the Emitterless SDN electrode. This invention pertains to a high-pressure sodium vapor discharge lamp that features a ceramic discharge vessel. The discharge vessel contains sodium, and possibly mercury, along with a rare gas. A refractory metal electrode is housed within the discharge vessel, and during operation, the discharge emanates from the tip of this electrode. Notably, the electrode is free from alkaline earth metals, and its tip reaches a temperature between 2400 K and 2700 K during operation. This design prevents the disappearance of sodium caused by the electrode material.

Another significant patent is for a high-pressure metal vapor discharge lamp. This invention includes an external ignition auxiliary means that is connected electrically to a first main electrode. In the lamp's inoperative condition, this ignition means extends along the wall of the discharge vessel, reaching up to 3 mm beyond the second main electrode. The design ensures that the external ignition element extends over at most 3 mm along the first main electrode, facilitating a regular ignition of the lamp and significantly restricting variations in the ignition voltage pulse required for ignition.

Career Highlights

Cornelis A Jacobs has dedicated his career to advancing lighting technology through innovative designs and solutions. His work at U.S. Philips Corporation has positioned him as a key figure in the development of high-pressure discharge lamps. His inventions have not only improved the performance of these lamps but have also contributed to energy efficiency in lighting applications.

Collaborations

Throughout his career, Jacobs has collaborated with notable colleagues, including Peter A Tielemans and Antonius J Driessen. These collaborations have fostered a creative environment that has led to groundbreaking advancements in lighting technology.

Conclusion

Cornelis A Jacobs is a distinguished inventor whose work in high-pressure discharge lamps has made a lasting impact on the industry. His innovative patents and collaborations reflect his commitment to enhancing lighting technology.