公开(公告)号：US10989868B1

公开(公告)日：2021-04-27

申请号：US16051354

申请日：2018-07-31

Applicant: Apple Inc.

Inventor： Yi Zou ,  Hua Song ,  Liming Wang ,  Daniel A. Podhajny

IPC: G02B6/00 ,  G02B6/036 ,  F21V8/00 ,  C03C25/105 ,  D21H21/30

Abstract: An item such as a fabric-based item may have a layer of fabric such as a layer of woven fabric. The fabric layer may include warp and weft strands. The fabric may cover keys in a keyboard or may be used in forming other structures in the fabric-based item. Each key may have an illuminated key label. Portions of the fabric may be processed by pressing heated protrusions on a textured mold into polymer optical fibers in the fabric. The protrusions form corresponding light-scattering recesses in cladding portions of the optical fibers. Light-emitting diodes or other light sources may be coupled to respective end surfaces of the optical fibers. The light-emitting diodes emit light that is emitted from the thermally imprinted light-emitting regions formed by pressing the heated protrusions into the optical fibers.