Illumination systems providing direct and indirect illumination
First Claim
1. An illumination system comprising:
- multiple light emitting elements (LEEs);
a first light guide extending along a first plane, the first light guide being positioned and arranged to receive light from at least some of the LEEs and guide the light in a first direction in the first plane;
a second light guide extending along the first plane, the second light guide being positioned and arranged to receive light from at least some other of the LEEs and guide the light in a second direction in the first plane opposite to the first direction;
a first redirecting optic positioned and arranged to receive light from the first light guide and direct the light in a first angular range and a second angular range; and
a second redirecting optic positioned and arranged to receive light from the second light guide and direct the light in a third angular range and a fourth angular range,wherein each of the light guides and the redirecting optics has a longitudinal dimension that is (i) parallel to the first plane and (ii) orthogonal to the first and second directions,wherein the LEEs are distributed along the longitudinal dimension, andwherein the first, second, third and fourth angular ranges are different, such thateach of prevalent propagation directions of the first angular range and the second angular range has a component that is opposite the first direction, andeach of prevalent propagation directions of the third angular range and the fourth angular range has a component that is opposite the second direction.
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Accused Products
Abstract
Illumination devices are described for illuminating a target area, e.g., floors of a room, using solid-state light sources. In general, an illumination device includes a first light guide extending along a first plane, the first light guide to receive light from first light emitting elements (LEEs) and guide the light in a first direction in the first plane; a second light guide extending along the first plane, the second light guide to receive light from second LEEs and guide the light in a second direction in the first plane opposite to the first direction; a first redirecting optic to receive light from the first light guide and direct the light in first and second angular ranges; and a second redirecting optic to receive light from the second light guide and direct the light in third and fourth angular ranges, where the first, second, third and fourth angular ranges are different.
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Citations
6 Claims
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1. An illumination system comprising:
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multiple light emitting elements (LEEs); a first light guide extending along a first plane, the first light guide being positioned and arranged to receive light from at least some of the LEEs and guide the light in a first direction in the first plane; a second light guide extending along the first plane, the second light guide being positioned and arranged to receive light from at least some other of the LEEs and guide the light in a second direction in the first plane opposite to the first direction; a first redirecting optic positioned and arranged to receive light from the first light guide and direct the light in a first angular range and a second angular range; and a second redirecting optic positioned and arranged to receive light from the second light guide and direct the light in a third angular range and a fourth angular range, wherein each of the light guides and the redirecting optics has a longitudinal dimension that is (i) parallel to the first plane and (ii) orthogonal to the first and second directions, wherein the LEEs are distributed along the longitudinal dimension, and wherein the first, second, third and fourth angular ranges are different, such that each of prevalent propagation directions of the first angular range and the second angular range has a component that is opposite the first direction, and each of prevalent propagation directions of the third angular range and the fourth angular range has a component that is opposite the second direction. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification