Lamp reflector
AssigneeSterner Lighting Systems Incorporated
InventorsWayne G. Nielson, Robert D. Kruger, Noah N. Rockey, Michael R. Specken, Gary V. Briesemeister, John B. Grunloh
Life of this patent
Estimating the term…
Abstract
A light fixture includes a lamp mounted within a reflector. The reflector includes a first surface lying in a generally parabolic sheet and being bounded in the generally parabolic sheet by first and second edges. A pair of generally opposing surfaces are connected to the first surface at the first and second edges. The generally opposing surfaces have a shape such that the lamp provides a generally rectangular beam pattern when the reflector reflects or redirects light from the lamp.
Claims31
A lamp reflector, comprising:
- a first surface lying in a generally parabolic sheet and having a central portion and first and second end portions, the first and second end portions having a first width in the parabolic sheet and the central portion having a second width in the parabolic sheet, the second width being smaller than the first width, the first surface being defined by first and second edges in the parabolic sheet, a first parabola lying in the parabolic sheet having a focal length, a focal point and an axis;
- a second surface, connected to the first surface along the first edge, the second surface comprising a section of a paraboloid wherein a second parabola lying in the paraboloid has an axis generally parallel with the first parabola and has a focal length different than the focal length of the first parabola;
- and
- a third surface, connected to the first surface along the second edge, the third surface comprising a section of the paraboloid wherein the first, second and third surfaces are arranged such that the focal points of the first and second parabolas coincide.
A light fixture, comprising:
- a reflector;
- a gas discharge lamp mounted within the reflector;
- wherein the reflector includes a first surface lying in a generally parabolic sheet and bounded in the generally parabolic sheet by first and second edges, the first surface having a central portion and first and second end portions, the first and second end portions having a first width in the parabolic sheet and the central portion having a second width in the parabolic sheet, the second width being smaller than the first width, the first and second widths being defined by the first and second edges in the parabolic sheet, and the reflector including a pair of generally opposing surfaces connected to the first surface at the first and second edges and having a shape such that the lamp provides a generally rectangular beam pattern when the reflector redirects radiation from the lamp;
- wherein the first surface defines a focal line, wherein the gas discharge lamp is generally elongate and has a longitudinal axis, and wherein the lamp is mounted within the reflector such that the longitudinal axis of the lamp is generally parallel to the focal line defined by the first surface;
- and
- wherein the longitudinal axis of the lamp is generally located on the focal line defined by the first surface.
A light fixture, comprising:
- a lamp;
- and
- a reflector, the lamp being mounted relative to the reflector so that radiation from the lamp reflected by the reflector provides a beam pattern, the reflector comprising:
- a first surface, a second surface, and a third surface, the second surface being connected to the first and third surfaces and between the first and third surfaces, the first, second and third surfaces being shaped to provide a generally rectangular beam pattern;
- a support assembly coupled to the reflector;
- and
- a plurality of fasteners coupled to the support assembly, for fastening the light fixture to railings, at least one of the fasteners including means whereby it may be moved relative to another of the fasteners along the support assembly to accommodate variation in spacing between the railings.
An apparatus for mounting a light fixture to a plurality of elongate members spaced from one another by a spacing, the apparatus comprising:
- a support assembly coupled to the light fixture;
- a first connector, coupled to the support assembly and connectable to a first of the plurality of elongate members;
- and
- a second connector, coupled to the support assembly and connectable to a second of the plurality of elongate members, the first and second connectors including means adjustably coupling such to the support assembly to accommodate for variations in the spacing between the first and second elongate members.
Dependencies are inferred from the claim text.