U.S. Philips Corporation

Jacobus A Heijboer

Henricus F Giller

The electric reflector lamp according to the invention has a blown glass lamp envelope, of which a concave internally mirror-coated wall portion, a translucent wall portion and a tubular wall portion constitute a single blow moulding. Within the lamp envelope is arranged a metal reflector body, which has a concave spherically curved reflecting surface facing the mirror-coated wall portion. Its axis and its center of curvature coincide with the axis and the focus, respectively, of the mirror-coated wall portion. A light source surrounds the focus. The lamp does not or substantially does not, emit stray light and concentrates the generated light very effectively.

Growing community of inventors

Eindhoven, Netherlands

Jacobus A Heijboer