Electrodeless lamp having compound resonant structure

Patent 4887192 Issued on December 12, 1989. Estimated Expiration Date:

November 4, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Microwave discharge light source apparatus
Patent #: 4673846
Issued on: 06/16/1987
Inventor: Yoshizawa , et al.

Lamp having segmented reflector
Patent #: 4683525
Issued on: 07/28/1987
Inventor: Camm

Microwave powered electrodeless light source utilizing de-coupled modes Patent #: 4749915
Issued on: 06/07/1988
Inventor: Lynch , et al.

Inventors

Assignee

Fusion Systems Corporation

Application

No. 267426 filed on 11/04/1988

US Classes:

362/265, Including circuit arrangement315/39, Discharge device load with distributed parameter-type transmission line (e.g., wave-guide, coaxial cable)315/248, Induction-type discharge device load315/344, Electromagnetic influenced discharge device362/263, Ionized gas or vapor light source362/297With or including plural, distinct reflecting surfaces

Examiners

Primary: Husar, Stephen F.

Attorney, Agent or Firm

Pollock, Vande Sande & Priddy

Foreign Patent References

60696 JP. 04/13/1982
123954 JP. 08/13/1985
45665 JP. 09/13/1987

International Class

F21K 007/00

Abstract

An electrodeless lamp which couples to a small bulb and obtains a relatively high light output therefrom. A cavity which comprises a compound resonant structure including vestibule and reflector portions is provided. The combination of vestibule and reflector results in a condition of resonance throughout the cavity, whereby strong fields are coupled to the small bulb and a reflector is provided for directing and enhancing light output.