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:
Aug. 29, 2000
Filed:
May. 09, 1996
Dale Work, Flemington, NJ (US);
Mark Fellows, New Fairfield, CT (US);
Gregory Nelson, Painted Post, NY (US);
Kent Collins, Hammondsport, NY (US);
Robertus A Keyser, Veldhoven, NL;
Andrew Jackson, Hammondsport, NY (US);
Oscar J Deurloo, Veldhoven, NL;
Aswin J Linden, Weert, NL;
Peter A Seinen, Veldhoven, NL;
Willem J Van Den Hoek, GB St. Oedenrode, NL;
Hendrik A Van Esveld, Geldrop, NL;
Josephus C Hendricx, Geldrop, NL;
Philips Electronics North America Corporation, New York, NY (US);
Abstract
An integrated reflector lamp includes a sealed envelope enclosing a high pressure gas discharge device. A shell has a rim portion which receives the sealed envelope and an opposing basal portion carrying a screw base. A ballast for igniting and operating the discharge device is enclosed within the shell between the screw base and the sealed envelope. The sealed envelope includes a reflective surface which directs light emitted by the discharge device. The reflective surface also provides effective heat management for preventing overheating of the ballast by the heat generated by the discharge device. The integrated lamp has photometrics and luminous efficacy which exceeds that of corresponding halogen and halogen IR reflector lamps while having an overall planform which fits within that of the corresponding lamp. In a favorable embodiment, the ballast drives the discharge device at a high frequency above about 19 kHz and below the lowest acoustic resonant frequency of the discharge device, facilitating a small physical size for the ballast while also avoiding acoustic resonance. In one embodiment, the reflector lamp fits within the ANSI outline for a PAR 38 lamp and has total lumens at least substantially equal to and a luminous efficacy which substantially exceeds that of a corresponding PAR 38 lamp having an incandescent filament.