LED-based lamps
AssigneeIntematix Corporation
InventorHaitao Yang
Life of this patent
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Abstract
An LED-lamp (lighting bar) comprises a plurality of solid state light emitters (LEDs) configured as an elongate (linear) array and a generally concave cylindrical light reflective surface disposed along the length of the array of LEDs. The concave light reflective surface is configured to direct light over an illumination plane located to a side of the lamp. The LEDs can be configured such that their emission axes are oriented to the illumination plane at an angle of between 0° and 90. The lamp can further comprise a second generally concave cylindrical light reflective surface in which the concave light reflective surfaces are configured to direct light over illumination planes located on respective sides of the lamp. There is also disclosed a panel lamp and sign incorporating the lamp(s) of the invention.
Claims27
A lamp comprising:
- a plurality of solid state light emitters configured as an elongate array;
- and
- a first generally concave cylindrical light reflective surface disposed along a length of the array of light emitting devices and configured to direct light over an illumination plane located to a side of the lamp;
- an elongate channel shaped body in which the light emitters are located within and spaced along the length of the body;
- wherein the body comprises a base portion, a first wall portion, and a second wall portion, and the concave light reflective surface extends between the base portion and the first wall portion;
- wherein the light emitters extend along the second wall portion;
- and
- a substantially convex light reflective cylindrical surface located within the body and extending along the second wall portion and configured such that in operation the concave and convex light reflective surfaces direct light over the illumination plan.
A panel lamp comprising:
- an enclosure including a base;
- and
- at least one lamp including
- a plurality of solid state light emitters configured as an elongate array,
- a first generally concave cylindrical light reflective surface disposed along a length of the array of light emitting devices, and
- a second generally concave cylindrical light reflective surface disposed along a length of the array of light emitting devices,
- wherein the first and second concave light reflective surfaces are configured to direct light over an illumination plane located on respective sides of the lamp;
- wherein the at least one lamp is located in the enclosure and configured to emit light towards the base of the enclosure.
A panel lamp comprising:
- an enclosure;
- and
- at least one lamp including a plurality of solid state light emitters configured as an elongate array and a first generally concave cylindrical light reflective surface disposed along a length of the array of light emitting devices and configured to direct light over an illumination plane located to a side of the lamp;
- and
- at least one phosphor material operable to absorb at least a portion of light emitted by the light emitters and to emit light of a different wavelength range, wherein the at least one phosphor material is provided at the enclosure opening.
A light emitting sign comprising a light transmissive display surface and at least one lamp that is configured to illuminate the displace surface;
- wherein the at least one lamp includes a plurality of solid state light emitters configured as an elongate array and a first generally concave cylindrical light reflective surface disposed along a length of the array of light emitting devices and configured to direct light over an illumination plane located to a side of the lamp;
- and
- at least one phosphor material operable to absorb at least a portion of light emitted by the light emitters and to emit light of a different wavelength range, wherein the at least one phosphor material is located on the display surface.
Dependencies are inferred from the claim text.