公开(公告)号：US11644617B1

公开(公告)日：2023-05-09

申请号：US17408300

申请日：2021-08-20

Applicant: Apple Inc.

Inventor： Shenglin Ye ,  Wei Lin ,  Prabhakar Gulgunje ,  Shubhaditya Majumdar ,  Boyi Fu ,  Sudirukkuge T. Jinasundera ,  Nathan K. Gupta

IPC: G02B6/04 ,  G02B6/10

CPC classification number: G02B6/04 ,  G02B6/102

Abstract: A system may include one or more electronic devices. Fiber bundles may be provided to convey light. A fiber bundle may have a bend along its length. Fibers for the fiber bundle may be formed from polymer cores coated with polymer claddings. The fibers may have end faces coated with antireflection coatings. The antireflection coatings may be formed from amorphous fluoropolymer deposited from solution. The fluoropolymer may be applied to the end faces of the fibers by dipping, spraying, or by dispensing with a needle dispenser or other dispensing tool. An optical component such as a light-emitting device for a communications system, an illumination system, or a sensor system may provide infrared light that is guided through the fiber bundle.

公开(公告)号：US11215752B1

公开(公告)日：2022-01-04

申请号：US17112147

申请日：2020-12-04

Applicant: Apple Inc.

Inventor： Wei Lin ,  Di Liu ,  Chunchia Huang ,  Nathan K. Gupta ,  Prabhakar Gulgunje ,  Shenglin Ye ,  Shubhaditya Majumdar

IPC: G02B6/08 ,  G02B6/02

Abstract: An electronic device may have a housing with a display. A protective display cover layer for the display may have an image transport layer such as an image transport layer formed from optical fibers. Extruded filaments of binder material may be fused together to form a layer of binder for the image transport layer. Each filament may contain multiple embedded optical fibers. As a result of the extrusion process, the optical fibers may be characterized by increasing lateral deformation at increasing distances from the center of the filament in which the optical fibers are embedded. Tension variations and variations in the orientation angle of the fibers in the image transport layer can be maintained below desired limits to ensure satisfactory optical performance for the image transport layer. The optical fibers and binder may be formed from polymers or other clear materials.

公开(公告)号：US20170371086A1

公开(公告)日：2017-12-28

申请号：US15260993

申请日：2016-09-09

Applicant: Apple Inc.

Inventor： Jun Qi ,  Rong Liu ,  Victor H. Yin ,  Shenglin Ye ,  Sudirukkuge Tharanga Jinasundera ,  Nathan K. Gupta

IPC: F21V8/00

CPC classification number: G02B6/0016 ,  G02B6/00 ,  G02B6/0065 ,  G02B6/0068 ,  G02B6/0073

Abstract: A display may have a backlight with a row of light-emitting diodes that emit light into an edge surface of a light guide layer. The light guide layer may have opposing planar surfaces. Light-scattering structures such as light-scattering holes that extend between the planar surfaces may be used to scatter rays of light by refraction and/or diffraction and can thereby homogenize light from the light-emitting diodes. The homogenized light may then be extracted from the light guide layer and may serve as backlight illumination for an array of pixels such as an array of liquid crystal display pixels. Light-scattering structures such as grooves, pits, bumps, and other structures for scattering light from the light-emitting diodes may be formed on the edge surface of the light guide layer to enhance light mixing.