LIGHT EMITTING DIODE BASED LINEAR LAMPS
First Claim
1. A lamp comprising:
- a plurality of LEDs configured as a linear array and an elongate lens disposed over the array of LEDs, the lens comprising a generally concave central portion and generally convex edge portions wherein the lens is configured such that in operation a variation in illuminance is less than 10% over an angular range of at least 90°
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1 Assignment
0 Petitions
Accused Products
Abstract
A linear lamp (lighting bar) comprises: a linear array of LEDs and an elongate lens disposed over the array of LEDs. The lens comprises a generally concave central portion (divergent) and generally convex edge portions (convergent) and is configured such that in operation a variation in illuminance is less than 10% over an angular range of at least 90°. In one arrangement the concave central portion comprises an inner generally concave surface that faces the LEDs and an outer substantially planar and/or generally concave surface overlying the LEDs. The convex edge portions can comprise an outer generally convex surface. The lamp is suited for use in a light box for light emitting signage, under-cabinet/under-shelf lighting, cove lighting, retail display lighting, advertisement display lighting, wall sconce lighting and outdoor or indoor area lighting
167 Citations
38 Claims
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1. A lamp comprising:
- a plurality of LEDs configured as a linear array and an elongate lens disposed over the array of LEDs, the lens comprising a generally concave central portion and generally convex edge portions wherein the lens is configured such that in operation a variation in illuminance is less than 10% over an angular range of at least 90°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a plurality of LEDs configured as a linear array and an elongate lens disposed over the array of LEDs, the lens comprising a generally concave central portion and generally convex edge portions wherein the lens is configured such that in operation a variation in illuminance is less than 10% over an angular range of at least 90°
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13. A light box comprising:
- a housing having an opening that comprises a light emitting plane of the light box and at least one lamp comprising;
a plurality of LEDs configured as a linear array and an elongate lens disposed over the array of LEDs, the lens comprising a generally concave central portion and generally convex edge portions wherein the lens is configured such that in operation a variation in illuminance is less than 10% over an angular range of at least 90°
. - View Dependent Claims (14, 15, 16, 17, 18, 19)
- a housing having an opening that comprises a light emitting plane of the light box and at least one lamp comprising;
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20. A lamp comprising:
- a plurality of LEDs configured as a linear array and an elongate lens disposed over the array of LEDs, wherein the lens has a cross-section comprising an inner generally concave surface that faces the LEDs and an outer generally convex surface including a planar and/or concave surface overlying the LEDs.
- View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A light box comprising:
- a housing having an opening that comprises a light emitting plane of the light box and at least one LED lamp comprising;
a plurality of LEDs configured as a linear array and an elongate lens disposed over the array of LEDs, wherein the lens has a cross-section comprising an inner generally concave surface that faces the LEDs and an outer generally convex surface including a planar and/or concave surface overlying the LEDs. - View Dependent Claims (34, 35, 36, 37, 38)
- a housing having an opening that comprises a light emitting plane of the light box and at least one LED lamp comprising;
Specification