The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 1986
Filed:
Dec. 19, 1985
Henricus F Giller, Eindhoven, NL;
Jacobus A Heijboer, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
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.