Highly efficient luminaire having optical transformer providing precalculated angular intensity distribution and method therefore
First Claim
Patent Images
1. A light transformer for directing light with low divergence or substantially parallel with an axis of light direction comprising:
- a first total internal reflection surface;
a first member including a portion of the first total internal reflection surface;
a first planar optical window located at an end of the first member, the first planar optical window being substantially perpendicular to the axis of light direction; and
an aspheric lens adjacent to the first member.
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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.
17 Citations
10 Claims
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1. A light transformer for directing light with low divergence or substantially parallel with an axis of light direction comprising:
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a first total internal reflection surface;
a first member including a portion of the first total internal reflection surface;
a first planar optical window located at an end of the first member, the first planar optical window being substantially perpendicular to the axis of light direction; and
an aspheric lens adjacent to the first member. - View Dependent Claims (2, 3, 10)
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4. A light transformer comprising:
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a first end that receives light from a light source;
a second end that outputs the received light, the second end located on an opposite end of the device from the first end;
a first member located on a third end of the light redirecting device the first member having an outer wall comprising a total internal reflection surface;
a second member located on a fourth end of the light redirecting device, the fourth end located on an opposite end of the redirecting device from the third end, the second member having an outer wall comprising a total internal reflection surface; and
an axis located between the third end and the fourth end, the axis being perpendicular to the first end, wherein the first face and the second face redirects the received light in a direction of the second end.
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5. A method for designing a reflective surface for a light transformer comprising:
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receiving maximum and minimum output angles;
receiving a location of a portion of the light transformer with respect to a light source that provides light; and
iteratively point-by-point calculating an optical transformer reflective surface by providing an associated increment for an output angle for each increment of an input angle, the associated increment for the output angle being consistent with a predetermined output intensity distribution to reflect light provided by the light source according to the received maximum and minimum output angles based on the received location of a portion of the light transformer.
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6. An apparatus for emitting light in a predetermined pattern comprising:
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a light source that emits light;
a light transformer having a curved conical reflective surface, the reflective surface reflecting most of the light emitted by the light source in a pattern with a precalculated angular luminous intensity distribution; and
an optical window the transmits the light to the exterior of the light transformer. - View Dependent Claims (7, 8, 9)
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Specification
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Current AssigneeLight Transformation Technologies LLC (Acacia Research Corporation)
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Original AssigneeFarlight, LLC
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InventorsRizkin, Alelxander, Tudhope, Robert H., Ruiz, David, Agurok, Il?apos;ya
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current362/559
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CPC 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
