Linear light using LEDs
AssigneeArgent Electric, Inc.
InventorRobert S. Feldstein
Life of this patent
Estimating the term…
Abstract
A lighting fixture provides a substantially uniform line of light (bar of light) for illumination or signage. It uses a linear array of LEDs (light-emitting diodes) which are relatively efficient, long-lasting and resistant to damage from vibration. The LEDs are arranged within a reflective shell within the fixture and one or more elongated cylindrical focusing lenses are positioned at a specific distance in front of the LEDs to focus the light into a line of light. A focusing lens may also be the protective window of the reflective shell.
Claims13
A lighting fixture to illuminate a line of light, the lighting fixture comprising:
- (a) a base,
- (b) a plurality of at least three LEDs (Light Emitting Diodes) mounted on the base, the LEDs being aligned sequentially in a line;
- (c) a first elongated rod focusing lens spaced from and parallel to the LEDs and adapted to focus light into a line of light;
- and
- (d) a second elongated rod focusing lens, spaced from and parallel to the first focusing lens and adapted to focus light onto the first focusing lens;
- and
- (e) a reflector extending from the base to the first focusing lens, said reflector
- comprising two opposite curved walls having reflective surfaces.
A lighting fixture to illuminate an egress path in an emergency with a line of light, the lighting fixture comprising:
- (a) a base,
- (b) a plurality of at least three LEDs (Light Emitting Diodes) mounted on the base, the LEDs being aligned sequentially in a line;
- (c) a first elongated rod focusing lens spaced from and parallel to the LEDs and adapted to focus light into a line of light;
- (d) a second elongated rod focusing lens spaced from and parallel to the first focusing lens and adapted to focus light onto the first focusing lens;
- (e) a battery;
- and
- (c) a switch which electrically connects the battery to energize the LEDs upon loss of AC power.
Dependencies are inferred from the claim text.