Egbertus J Maassen

Title: Egbertus J. Maassen and His Reflector-Lamp Patents.

Introduction

Egbertus J. Maassen is an inventor associated with Eindhoven, the Netherlands, and U.S. Philips Corporation. His recorded portfolio includes 8 patents, including inventions concerning electric reflector lamps.

Latest Patents

One of Maassen’s described patents concerns an electric reflector lamp designed to produce a well-mixed, comparatively high-flux beam and operate in a universal burning position. Its reflector surface combines a tilted parabolic form with axial lanes arranged in zones, creating regular polygonal cross-sections. A light source sits on the optical axis, with the reflector’s focus inside the source.

Another patent describes a lamp vessel with two mirrored wall portions. The portion near the window follows a parabolic branch whose axis is angled relative to the vessel’s axis, while its focus is spaced from the focus of the rear portion. A cylindrical light source is positioned along the axis to coincide with the two foci. This arrangement is intended to produce a wide beam while retaining dimensions typical of reflector lamps.

Career Highlights

Maassen’s listed work at U.S. Philips Corporation reflects a focus on reflector-lamp optics and light-beam shaping. The described designs address beam width, light distribution, lamp size, and operating orientation.

Collaborations

His listed coworkers include Franciscus A. Van Meel and Leonard C. Eijkelenboom.

Conclusion

Egbertus J. Maassen’s recorded inventions demonstrate how reflector geometry and light-source placement can be adapted to improve the performance and practicality of electric lamps.