Highly efficient luminaire having optical transformer providing precalculated angular intensity distribution and method therefore
DC CAFC
First Claim
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1. A lighting system, comprising:
- a housing;
a light assembly supported by the housing, the light assembly including a light source for emitting light; and
a light pipe having a first end in close association with the light source for coupling the light thereinto, and a second end opposite the first end from which the light is dispersed; and
a light transformer between the first end and the second end of the light pipe in close proximity to the second end with a transformer axis coaxial to the longitudinal axis of the light pipe, the light transformer having a curved conical reflective surface that redirects and redistributes light received from the light source, wherein the light transformer provides an omnidirectional pattern in a horizontal plane with precalculated angular luminous intensity distribution in a vertical plane;
a power source operatively connected to the light assembly for providing power thereto.
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Accused Products
Abstract
A highly efficient luminaire. The luminaire includes a light source that emits light. The emitted light is redirected by a light transformer having a curved circular reflective interior surface, the reflective interior surface reflecting the light in a predetermined pattern. A substantial amount of light being may be reflected close to an axis coincident with a radial line defining a radius of the circular reflective interior surface. Additionally, a substantial amount of light may be reflected in a pattern with low divergency or parallel with an axis of the light transformer. The light is transmitted to the exterior of the luminaire by an optical window.
49 Citations
24 Claims
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1. A lighting system, comprising:
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a housing;
a light assembly supported by the housing, the light assembly including a light source for emitting light; and
a light pipe having a first end in close association with the light source for coupling the light thereinto, and a second end opposite the first end from which the light is dispersed; and
a light transformer between the first end and the second end of the light pipe in close proximity to the second end with a transformer axis coaxial to the longitudinal axis of the light pipe, the light transformer having a curved conical reflective surface that redirects and redistributes light received from the light source, wherein the light transformer provides an omnidirectional pattern in a horizontal plane with precalculated angular luminous intensity distribution in a vertical plane;
a power source operatively connected to the light assembly for providing power thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An elevated airfield luminaire comprising:
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a housing;
a light assembly, including an LED light source for emitting light;
a cylindrical light pipe having a first end with a semispherical input surface located at a focal distance from the light source, the first end receiving light from the light source, and a second end located opposite the first end, the second end emitting light omnidirectionally perpendicular to a longitudinal axis of the light pipe;
a light transformer between the first end and the second end of the light pipe in close proximity to the second end with a transformer axis coaxial to the longitudinal axis of the light pipe, the light transformer having a curved conical reflective surface that redirects and redistributes light received from the light source, wherein the light transformer provides an equal, uniform and omnidirectional pattern in a horizontal plane with precalculated angular luminous intensity distribution in a vertical plane, wherein a cone vertex is located on the transformer axis. - View Dependent Claims (20, 21, 22, 23)
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24. A lighting system, comprising:
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a housing;
a light assembly supported by the housing, the light assembly including a light source for emitting light; and
a light pipe having a first end in close association with the light source for coupling the light thereinto, and a second end opposite the first end from which the light is dispersed; and
a light transformer between the first end and the second end of the light pipe in close proximity to the second end with a transformer axis coaxial to the longitudinal axis of the light pipe, the light transformer having a curved conical reflective surface that redirects and redistributes light received from the light source, wherein the light transformer provides an omnidirectional pattern in a horizontal plane with precalculated angular luminous intensity distribution in a vertical plane.
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Specification
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Litigation Data
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Current AssigneeLight Transformation Technologies LLC (Acacia Research Corporation)
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Original AssigneeFarlight, LLC
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InventorsRuiz, David, Rizkin, Alexander, Tudhope, Robert H., Agurok, Il'ya
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Primary Examiner(s)Alavi, Ali
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Application NumberUS10/391,327Publication NumberTime in Patent Office931 DaysField of Search362/551, 362/558, 362/555, 362/559, 362/560, 362/554, 362/576, 362/581, 362/431, 362/153.1, 385/901US Class Current362/559CPC Class CodesB64D 2203/00 Aircraft or airfield lights...B64F 1/205 arranged underground, e.g. ...E01F 9/559 illuminatedF21S 10/06 flashing, e.g. with rotatin...F21V 13/04 the elements being reflecto...F21V 21/0824 Ground spikesF21V 5/046 the lens having a rotationa...F21V 7/0008 providing for indirect ligh...F21V 7/0091 using total internal reflec...F21V 7/04 Optical designF21W 2111/06 for aircraft runways or the...F21Y 2103/33 annularF21Y 2115/10 Light-emitting diodes [LED]Y10S 362/80 Light emitting diode
