Light-guiding system comprising a plate-like triangular guiding member
First Claim
1. A light-guiding system comprising a plate-like light-guiding element having a substantially flat lateral surface and means for coupling in light through said lateral surface, characterized in that said means comprise a light-guiding member substantially having a flat plate-like and triangular shape, wherein a shorter side comprises light-coupling means for coupling in light into said light-guiding member, wherein a longer side comprises a coupling-out surface which faces said lateral surface for coupling in light into said light-guiding element, and wherein the third side of the triangle comprises a number of surfaces that are positioned at an angle to the direction of said third side, all said surfaces being perpendicular to the plane of said plate-like shape.
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Accused Products
Abstract
A light-guiding system comprising a plate-like light-guiding element (20) having a substantially flat lateral surface and means for coupling in light through said lateral surface. Said means comprise a light-guiding member (1,21) substantially having a flat platelike and triangular shape, wherein a shorter side (2) comprises light-coupling means (5) for coupling in light into said light-guiding member (1,21). A longer side of the triangle comprises a coupling-out surface (7) which faces said lateral surface for coupling in light into said light-guiding element (20). The third side (8) of the triangle comprises a number of surfaces (10) that are positioned at an angle to the direction of said third side (8).
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Citations
14 Claims
- 1. A light-guiding system comprising a plate-like light-guiding element having a substantially flat lateral surface and means for coupling in light through said lateral surface, characterized in that said means comprise a light-guiding member substantially having a flat plate-like and triangular shape, wherein a shorter side comprises light-coupling means for coupling in light into said light-guiding member, wherein a longer side comprises a coupling-out surface which faces said lateral surface for coupling in light into said light-guiding element, and wherein the third side of the triangle comprises a number of surfaces that are positioned at an angle to the direction of said third side, all said surfaces being perpendicular to the plane of said plate-like shape.
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14. A method of guiding light into a plate-like light-guiding element having a flat lateral surface, wherein light is coupled in through said lateral surface, characterized in that light is coupled in by a light-guiding member substantially having a flat plate-like and triangular shape, wherein light is coupled in into said light-guiding member through a shorter side of the triangle by light-coupling means, and wherein a longer side of the triangle comprises a coupling-out surface which faces said lateral surface for coupling in light into said light-guiding element, and wherein the third side of the triangle comprises a number of surfaces that are positioned at an angle to the direction of said third side, all said surfaces being perpendicular with respect to the plane of said plate-like shape, so that the light is reflected by the surfaces at an angle to the direction of the third side and is thus directed to said coupling-out surface and coupled in into said light-guiding element.
Specification