Hollow lightguide having multiple reflectors
First Claim
1. A lightguide comprising a staircase shape optical construction comprising a plurality of light reflecting risers, at least two risers in the plurality of light reflecting risers comprising non-parallel light reflecting portions,wherein the lightguide is hollow, and further comprises an input arm disposed facing first and second non-parallel light reflecting portions in the light reflecting portions, and the first and second non-parallel reflecting portions reflect light from the input arm into different directions that are on the same side of the input arm, andwherein the first and second non-parallel light reflecting portions are offset with respect to each other along two mutually orthogonal directions, each of the two mutually orthogonal directions is orthogonal or parallel to a thickness direction of the lightguide, and the first and second non-parallel light reflecting portions are rotated with respect to each other about an axis parallel to the thickness direction of the lightguide.
1 Assignment
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Accused Products
Abstract
Lightguide is disclosed. The lightguide includes a staircase shape optical construction that includes a plurality of light reflecting risers. At least two of the risers include non-parallel light reflecting portions.
7 Citations
16 Claims
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1. A lightguide comprising a staircase shape optical construction comprising a plurality of light reflecting risers, at least two risers in the plurality of light reflecting risers comprising non-parallel light reflecting portions,
wherein the lightguide is hollow, and further comprises an input arm disposed facing first and second non-parallel light reflecting portions in the light reflecting portions, and the first and second non-parallel reflecting portions reflect light from the input arm into different directions that are on the same side of the input arm, and wherein the first and second non-parallel light reflecting portions are offset with respect to each other along two mutually orthogonal directions, each of the two mutually orthogonal directions is orthogonal or parallel to a thickness direction of the lightguide, and the first and second non-parallel light reflecting portions are rotated with respect to each other about an axis parallel to the thickness direction of the lightguide.
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5. A lightguide comprising:
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an input arm; a first output arm; a second output arm; and a bend connecting the input arm to the first and second output arms and comprising; a first light reflector for reflecting light from the input arm to the first output arm; a second light reflector for reflecting light from the input arm to the second output arm, the second light reflector being offset relative to the first light reflector along two mutually orthogonal directions; and a staircase shape optical construction comprising a plurality of light reflecting risers, a first riser comprising the first light reflector, a second riser different than the first riser comprising the second light reflector, the first and second light reflectors are rotated with respect to each other about an axis parallel to a thickness direction of the lightguide to reflect light into different directions that are on the same side of the input arm. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A lightguide comprising:
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an input arm; a staircase shape optical construction comprising a plurality of light reflecting risers configured to reflect light from the input arm, and an emitting surface, at least a portion of the emitting surface being a top surface of the lightguide transversal to a thickness direction of the lightguide, wherein a first light reflecting riser in the plurality of light reflecting risers comprises a first light reflecting portion, a second light reflecting riser in the plurality of light reflecting risers comprises a second light reflecting portion, and the first and second light reflecting portions are rotated with respect to each other about an axis parallel to the thickness direction of the lightguide to reflect light from the input arm into different directions that are on the same side of the input arm. - View Dependent Claims (16)
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Specification