公开(公告)号：US20240045101A1

公开(公告)日：2024-02-08

申请号：US17746879

申请日：2022-05-17

Applicant: Apple Inc.

Inventor： Peter J Guest ,  Ivan S Maric ,  Cole Snider ,  Ming Kun Shi ,  David Carnahan ,  Thomas T Morgan

IPC: G02B1/04 ,  G02B27/00 ,  G06F1/16 ,  C09D5/00 ,  C09D7/20 ,  C09D7/61 ,  C09D7/40 ,  C09D7/45 ,  C09D7/65

CPC classification number: G02B1/04 ,  G02B27/0093 ,  G06F1/163 ,  G06F1/1656 ,  C09D5/006 ,  C09D7/20 ,  C09D7/61 ,  C09D7/70 ,  C09D7/45 ,  C09D7/65

Abstract: An electronic device may include components that emit and detect infrared light. For example, a head-mounted device may have optical modules that present images to a user's left and right eyes. Each optical module may have an infrared light-emitting diode that emits infrared light that illuminates an eye box at an infrared wavelength, and an infrared camera that captures an image from the eye box at the infrared wavelength. A low-reflectance coating may be applied to one or more electronic device housing walls to prevent interference with the infrared components or with the visibility for a user. In particular, the low-reflectance coating may be a low-visible-reflectance-and-low-infrared-reflectance coating that exhibits low-reflectance across both visible and infrared wavelengths. The low-reflectance coating may be formed from carbon nanotubes and at least one organic solvent with zero polarity to ensure a low volatile organic component in the coating.