skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: RF driven sulfur lamp having driving electrodes which face each other

Abstract

A high intensity discharge lamp without mercury is disclosed radiating a selected spectrum of which can be almost entirely in the visible range from an envelope that contains a sulfur containing substance. The lamp utilizes a signal source that generates an excitation signal that is externally coupled to the exterior surface of the envelope to excite the enclosed sulfur containing substance. Various embodiments of the lamp use electrodes adjacent the envelope to couple the excitation signal thereto with the face of the electrodes shaped to complement the shape of the exterior surface of the envelope. Two shapes discussed are spherical and cylindrical. To minimize filamentary discharges each envelope may include an elongated stem affixed to the exterior thereof whereby a rotational subsystem spins the envelope. In yet another embodiment the envelope has a Dewar configuration with two electrodes, one positioned near the external curved side surface of the body, and a second to the inner surface of the hole through the envelope. Further, the envelope may contain a backfill of a selected inert gas to assist in the excitation of lamp with that backfill at a pressure of less than 1 atmosphere, wherein the backfill pressure is directly related tomore » the increase or decrease of peak output and inversely related to the increase and decrease of the emitted spectrum from the envelope. The emitting fill can be less than 6 mg/cc, or at least 2 mg/cc of the envelope of a sulfur containing substance.« less

Inventors:
 [1];  [2];  [3];  [4];  [5]
  1. (Lafayette, CA)
  2. (Castro Valley, CA)
  3. (Oakland, CA)
  4. (Orinda, CA)
  5. (San Francisco, CA)
Issue Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
OSTI Identifier:
872346
Patent Number(s):
5914564
Assignee:
Regents of University of California (Oakland, CA) LBNL
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
rf; driven; sulfur; lamp; driving; electrodes; intensity; discharge; mercury; disclosed; radiating; selected; spectrum; entirely; visible; range; envelope; contains; containing; substance; utilizes; signal; source; generates; excitation; externally; coupled; exterior; surface; excite; enclosed; various; embodiments; adjacent; couple; thereto; shaped; complement; shape; shapes; discussed; spherical; cylindrical; minimize; filamentary; discharges; elongated; affixed; whereby; rotational; subsystem; spins; embodiment; dewar; configuration; positioned; near; external; curved; inner; contain; backfill; inert; gas; assist; pressure; atmosphere; directly; related; increase; decrease; peak; output; inversely; emitted; emitting; fill; mg; cc; directly related; containing substance; intensity discharge; sulfur containing; various embodiments; discharge lamp; inner surface; inert gas; exterior surface; excitation signal; signal source; positioned near; inversely related; rf driven; selected spectrum; electrodes adjacent; driving electrodes; visible range; sulfur lamp; rf drive; driven sulfur; disclosed radiating; /315/

Citation Formats

Gabor, George, Orr, Thomas Robert, Greene, Charles Maurice, Crawford, Douglas Gordon, and Berman, Samuel Maurice. RF driven sulfur lamp having driving electrodes which face each other. United States: N. p., 1999. Web.
Gabor, George, Orr, Thomas Robert, Greene, Charles Maurice, Crawford, Douglas Gordon, & Berman, Samuel Maurice. RF driven sulfur lamp having driving electrodes which face each other. United States.
Gabor, George, Orr, Thomas Robert, Greene, Charles Maurice, Crawford, Douglas Gordon, and Berman, Samuel Maurice. Fri . "RF driven sulfur lamp having driving electrodes which face each other". United States. https://www.osti.gov/servlets/purl/872346.
@article{osti_872346,
title = {RF driven sulfur lamp having driving electrodes which face each other},
author = {Gabor, George and Orr, Thomas Robert and Greene, Charles Maurice and Crawford, Douglas Gordon and Berman, Samuel Maurice},
abstractNote = {A high intensity discharge lamp without mercury is disclosed radiating a selected spectrum of which can be almost entirely in the visible range from an envelope that contains a sulfur containing substance. The lamp utilizes a signal source that generates an excitation signal that is externally coupled to the exterior surface of the envelope to excite the enclosed sulfur containing substance. Various embodiments of the lamp use electrodes adjacent the envelope to couple the excitation signal thereto with the face of the electrodes shaped to complement the shape of the exterior surface of the envelope. Two shapes discussed are spherical and cylindrical. To minimize filamentary discharges each envelope may include an elongated stem affixed to the exterior thereof whereby a rotational subsystem spins the envelope. In yet another embodiment the envelope has a Dewar configuration with two electrodes, one positioned near the external curved side surface of the body, and a second to the inner surface of the hole through the envelope. Further, the envelope may contain a backfill of a selected inert gas to assist in the excitation of lamp with that backfill at a pressure of less than 1 atmosphere, wherein the backfill pressure is directly related to the increase or decrease of peak output and inversely related to the increase and decrease of the emitted spectrum from the envelope. The emitting fill can be less than 6 mg/cc, or at least 2 mg/cc of the envelope of a sulfur containing substance.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

Patent:

Save / Share: