LIGHT EMITTING DEVICES AND APPLICATIONS THEREOF
First Claim
Patent Images
1. A light emitting device comprising:
- at least one light source;
a lightguide operable to receive light from the at least one light source at a first location on the lightguide;
at least one light extraction region optically coupled to the lightguide;
a substantially non-scattering region along a portion of the lightguide having a first total width in a first direction parallel to an optical axis of the at least one light source greater than 5% of the total width of the lightguide in the first direction.
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Abstract
In one aspect, the present invention provides light emitting devices, including light fixtures and luminaires. In some embodiments, a light emitting device comprises at least one light source, a lightguide operable to receive light from the at least one light source at a first location on the lightguide, at least one light extraction region optically coupled to the lightguide and a substantially non-scattering region along a portion of the lightguide.
144 Citations
54 Claims
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1. A light emitting device comprising:
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at least one light source; a lightguide operable to receive light from the at least one light source at a first location on the lightguide; at least one light extraction region optically coupled to the lightguide; a substantially non-scattering region along a portion of the lightguide having a first total width in a first direction parallel to an optical axis of the at least one light source greater than 5% of the total width of the lightguide in the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A light emitting device comprising:
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a first light source and a second light source, the first light source and the second light source separated by a distance D; a lightguide operable to receive light from the first light source at a first location on the lightguide and light from the second light source at a second location on the lightguide; at least one light extraction region optically coupled to the lightguide; at least one light blocking region at least partially covering a surface of the lightguide; and a substantially non-scattering region of a width W along a portion of the lightguide between the light blocking region and the light extraction region, wherein a ratio of W/D is greater than 1. - View Dependent Claims (48, 49, 50, 51, 52)
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53. A light emitting device comprising:
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a plurality of light sources; a light guide operable to receive light from the plurality of light sources along an edge of the lightguide; at least one light extraction region optically coupled to the lightguide and having a width ranging from about 0.5 inches to about 100 inches in a direction parallel to the optical axis of at least one of the plurality of light sources; a light blocking region at least partially covering a surface of the lightguide; and a substantially non-scattering region disposed between the light blocking region and the light extraction region having a width ranging from about 1 inch to about 25 inches, wherein the pitch of the light sources ranges from about 0.1 to about 13 inches. - View Dependent Claims (54)
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Specification