Johannes H Roosen

Title: Innovations of Johannes H Roosen

Introduction

Johannes H Roosen is a notable inventor based in Eindhoven, Netherlands. He is recognized for his contributions to the field of cathode ray tube technology. His innovative work has led to the development of a unique patent that enhances the performance and durability of cathode ray tubes.

Latest Patents

Roosen holds a patent for a cathode ray tube featuring a multilayer interference filter. This filter is strategically placed between the cathodoluminescent screen and the interior side of the faceplate. The design incorporates alternate layers of materials with high and low refractive indices. The high refractive index material used is niobium pentoxide, while the low refractive index material can be either silicon oxide or magnesium fluoride. This innovative filter is designed to be substantially free from the crazing that typically occurs in known filters during the thermal processing of cathode ray tubes.

Career Highlights

Roosen has made significant strides in his career, particularly through his work at U.S. Philips Corporation. His expertise in cathode ray tube technology has positioned him as a key figure in the industry. His patent reflects his commitment to improving the functionality and reliability of electronic display technologies.

Collaborations

Throughout his career, Roosen has collaborated with esteemed colleagues such as Leendert Vriens and Henricus M De Vrieze. These collaborations have contributed to the advancement of technology in their field.

Conclusion

Johannes H Roosen's innovative work in cathode ray tube technology exemplifies the impact of dedicated inventors in the electronics industry. His patent for a multilayer interference filter showcases his ability to solve complex challenges in technology.