Lightguide component for lighting devices and lighting device

Abstract

A lightguide component for illumination devices includes: a lightguide layer having a light-receiving portion and first and second principal faces; and a direction-changing layer arranged on a side of the first or second principal face that directs part of light propagating in the lightguide layer to an exit surface, wherein the lightguide layer comprises a first base layer, an adhesive layer, and a second base layer in this order from the exit surface; the direction-changing layer, and the first and second base layers are made of resin; a thickness of each of the direction-changing layer and the first base layer is not more than 100mm; a thickness of the second base layer is not more than

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