System for producing a slender illumination pattern from a light emitting diode
First Claim
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1. An optic comprising:
- an inner side that rises with respect to a plane to form a cavity sized for receiving light from a light emitting diode, the cavity extending along the plane in two dimensions, farther in a first dimension than in a second dimension; and
an outer side that rises with respect to the plane to form a light emitting surface that extends along the plane in the two dimensions, farther in the second dimension than in the first dimension,wherein the inner side comprises a first contour along the first dimension and a second contour along the second dimension,wherein the light emitting surface comprises a third contour along the first dimension and a fourth contour along the second dimension,wherein the second contour is concave, comprises a first peak, and sags on opposing sides of the first peak,wherein the first contour is concave without sagging on opposing sides of the first peak,wherein the third contour is convex, comprises a second peak, and sags on opposing sides of the second peak, andwherein the fourth contour is convex without sagging on opposing sides of the second peak.
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Abstract
An optic can receive light from a dome of a light emitting diode and output light that, when cast upon a nearby flat surface, forms a strip of illumination. The optic can comprise a cavity that receives the light from the dome and an outer surface that emits the received light. An edge of the cavity can extend peripherally around the cavity in an oblong geometry. An edge of the outer surface can extend peripherally around the outer surface in an oblong geometry that is rotated ninety degrees relative to the oblong geometry of the cavity. A sidewall of the outer surface can comprise a region that is concave in nature or sags.
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Citations
18 Claims
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1. An optic comprising:
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an inner side that rises with respect to a plane to form a cavity sized for receiving light from a light emitting diode, the cavity extending along the plane in two dimensions, farther in a first dimension than in a second dimension; and an outer side that rises with respect to the plane to form a light emitting surface that extends along the plane in the two dimensions, farther in the second dimension than in the first dimension, wherein the inner side comprises a first contour along the first dimension and a second contour along the second dimension, wherein the light emitting surface comprises a third contour along the first dimension and a fourth contour along the second dimension, wherein the second contour is concave, comprises a first peak, and sags on opposing sides of the first peak, wherein the first contour is concave without sagging on opposing sides of the first peak, wherein the third contour is convex, comprises a second peak, and sags on opposing sides of the second peak, and wherein the fourth contour is convex without sagging on opposing sides of the second peak. - View Dependent Claims (2, 3, 4, 5)
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6. An optic comprising:
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a cavity sized to receive a dome of a light emitting diode and comprising an inner surface that rises above a first reference plane and that is intersected by a second reference plane along a first curve and by a third reference plane along a second curve, wherein the first, second, and third reference planes are perpendicular to one another; and a refractive outer surface opposite the inner surface, the refractive outer surface rising above the first reference plane and extending over the cavity, wherein the second reference plane intersects the refractive outer surface along a third curve that comprises a first peak, wherein the third reference plane intersects the refractive outer surface along a fourth curve that comprises the first peak, wherein the third curve sags while continuously rising above the first reference plane to the first peak, and the fourth curve continuously rises above the first reference plane to the first peak without sagging, wherein the first and second curves comprise a second peak, and wherein second curve sags while continuously rising above the first reference plane to the second peak, and the first curve continuously rises above the first reference plane to the second peak without sagging. - View Dependent Claims (7, 8, 9, 10, 11)
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12. An optic comprising:
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an inner surface defining a cavity configured for coupling to a light emitting diode and comprising a periphery that is elongated in a dimension; and an outer surface, opposite the cavity, comprising another periphery that is elongated perpendicular to the dimension, wherein, in a first cross section of the optic taken along the dimension, the inner surface continuously rises from an inner edge to a first peak without sagging, and the outer surface continuously rises from an outer edge to a second peak and sags between the outer edge and the second peak, and wherein, in a second cross section of the optic taken perpendicular to the first cross section, the inner surface continuously rises from the inner edge to the first peak and sags between the inner edge and the first peak, and the outer surface continuously rises from the outer edge to the second peak without sagging. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification