Johannes T De Hair

Title: Innovations of Johannes T De Hair

Introduction

Johannes T De Hair is a notable inventor based in Eindhoven, Netherlands. He has made significant contributions to the field of lighting technology, particularly in the development of low-pressure mercury discharge lamps. With a total of seven patents to his name, his work has had a lasting impact on the industry.

Latest Patents

One of his latest patents is for a low-pressure mercury discharge lamp with color temperature adjustment. This innovative lamp features a lamp vessel that includes two portions, each with its own electrode and luminescent layer. The first portion radiates white light of a specific color temperature, while the second portion emits light of a different color temperature. This design allows for the adjustment of the color temperature over a wide range, enhancing the lamp's versatility and luminous efficacy. Another significant patent involves a method for selecting low-pressure mercury discharge lamps based on the emission spectrum of the visible light emitted by the luminescent layer. This method utilizes an external light source to excite the luminescent layer, enabling the selection of lamps based on their luminescent properties.

Career Highlights

Throughout his career, Johannes T De Hair has worked with prominent companies, including U.S. Philips Corporation. His experience in these organizations has contributed to his expertise in lighting technology and innovation.

Collaborations

He has collaborated with notable coworkers such as Johannes T Van Kemenade and Everhardus G Berns, further enriching his professional journey and contributions to the field.

Conclusion

Johannes T De Hair's innovative work in the development of low-pressure mercury discharge lamps showcases his expertise and commitment to advancing lighting technology. His patents reflect a deep understanding of the complexities involved in creating efficient and versatile lighting solutions.