公开(公告)号：US20240151982A1

公开(公告)日：2024-05-09

申请号：US18407081

申请日：2024-01-08

Applicant: Apple Inc.

Inventor： Yifei Wang ,  Xiaoyong Fu ,  Wencong Zhu ,  Xianwei Zhao ,  Brandon Born

IPC: G02B27/09 ,  G02B27/01 ,  G02B27/42

CPC classification number: G02B27/0944 ,  G02B27/0172 ,  G02B27/4272 ,  G02B2027/0174 ,  G02B2207/101

Abstract: An electronic device may have a display system. The display system may include a waveguide, an input coupler, and a surface relief grating (SRG) structure. The SRG structure may be formed from a high-index material that includes titanium dioxide nanoparticles. To increase the refractive index of the high-index material, the ratio of the size of the nanoparticle core to the size of the capping layer may be increased. The high-index material may also include nanoparticles of different sizes to increase the packing density of the nanoparticles. The SRG structure may be depth modulated in a lateral direction to maximize efficiency. The SRG structure may include slanted ridges covered by an encapsulant. The SRG structure may include a blazed grating with ridges that are covered by a coating and encapsulated by an encapsulant.

公开(公告)号：US10694607B1

公开(公告)日：2020-06-23

申请号：US16450813

申请日：2019-06-24

Applicant: Apple Inc.

Inventor： Tingjun Xu ,  Guocheng Shao ,  Lei Yu ,  Ove Lyngnes ,  Sunggu Kang ,  Tianbo Sun ,  Xianwei Zhao ,  Xiaoyong Fu ,  Xingxing Cai

IPC: H05B37/02 ,  H05B47/11 ,  F21V8/00 ,  G02B5/28

Abstract: An electronic device may have a housing with a display. A transparent portion of the housing may serve as a display cover layer and may overlap an array of pixels in the display. The array of pixels may form an active area of the display for displaying images for a user. An ambient light sensor window may be formed in an inactive area of the display that does not overlap pixels. An ambient light sensor may be mounted in an interior region of the housing. A metal-coated light guide may have a first end aligned with the ambient light sensor window to receive ambient light from an exterior region surrounding the device and may have a second end at which the ambient light is provided to the ambient light sensor.