US 11,754,779 B1
Electronic devices with coherent fiber bundles
Ying-Da Wang, Taipei (TW); Chih-Yao Chang, Taipei (TW); Chun-Chih Chang, Taichung (TW); Nathan K. Gupta, San Francisco, CA (US); Wei Lin, Santa Clara, CA (US); and Xiani Li, Shenzhen (CN)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jul. 15, 2021, as Appl. No. 17/376,460.
Claims priority of provisional application 63/059,075, filed on Jul. 30, 2020.
Int. Cl. G02B 6/06 (2006.01)
CPC G02B 6/06 (2013.01) 17 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
a display configured to produce an image; and
a coherent fiber bundle having opposing input and output surfaces and configured to receive the image at the input surface, wherein the coherent fiber bundle has a central portion, wherein the coherent fiber bundle has a border portion with bent fibers that surrounds the central portion and is attached to the central portion by adhesive, wherein the bent fibers are bent away from the central portion toward the output surface of the coherent fiber bundle, wherein the border portion comprises first fiber cores, first fiber cladding, and a first binder, wherein the central portion comprises second fiber cores, second fiber cladding, and a second binder, wherein at least one of: the first and second fiber cores, the first and second fiber cladding, and the first and second binders are formed from different materials, wherein the output surface at the central portion is planar, and wherein the output surface at the border portion has a curved cross-sectional profile.