Highly efficient luminaire having optical transformer providing precalculated angular intensity distribution and method therefore
DC CAFCFirst 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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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.
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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