Jan Antoon Kesseler

Title: Jan Antoon Kesseler: Inventor of Reflector-Lamp Innovations

Introduction

Jan Antoon Kesseler is an inventor associated with Eindhoven, the Netherlands, and U.S. Philips Corporation. His work includes innovations in electric reflector lamps, with a focus on filament placement, reflector geometry, and improved light output. He holds 2 patents.

Latest Patents

Kesseler’s listed patents address two approaches to reflector-lamp design.

- **Bowl mirrored lamp.** This invention positions the filament asymmetrically around the lamp envelope’s axis, extending over an angle greater than 180 degrees. The arrangement prevents the filament from coinciding with its image in the mirrored bowl portion. Used with a reflector, this configuration can produce a light beam with very high central intensity.

- **Electric reflector lamp.** This design combines an ellipse-like curved reflector with a hyperbola-like curved infrared reflector. Its geometry aligns the reflectors’ foci and places the light source at their shared focus within the enclosed space. The patent also specifies a relationship between the reflectors’ dimensions, with the aim of improving lamp efficiency.

Career Highlights

Kesseler’s patent work reflects an engineering interest in how lamp components interact to shape and direct light. His inventions explore both the positioning of the light source and the geometry of the surrounding reflectors.

Collaborations

Kesseler’s listed coworkers include Leonard C. Eijkelenboom and John Fitzgerald. His work is associated with U.S. Philips Corporation.

Conclusion

Jan Antoon Kesseler’s two patents document practical innovations in reflector-lamp design, using carefully arranged filaments and coordinated reflector shapes to improve light distribution and efficiency.