Infrared Coatings for Gaze Tracking Systems

A head-mounted device may include near-eye displays and gaze tracking components to track a user's gaze. The head-mounted device may include an optical system, including a waveguide and optional lenses to guide images produced by display modules to an eye box. The gaze tracking components may i...

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Bibliographic Details
Main Authors Oudenhoven, Michael J, Lau, Brian S, Harder, Cameron A
Format Patent
LanguageEnglish
Published 06.06.2024
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:A head-mounted device may include near-eye displays and gaze tracking components to track a user's gaze. The head-mounted device may include an optical system, including a waveguide and optional lenses to guide images produced by display modules to an eye box. The gaze tracking components may include infrared emitters that emit infrared light toward the user's eyes and infrared sensors that detect infrared light that has been reflected from the user's eyes. To reduce interference with the gaze tracking components from environmental infrared light, the optical system may include an infrared-reflective coating and an infrared-absorptive coating. The infrared-reflective and infrared-absorptive coatings may be formed on the optional lenses or on other transparent structures in the optical system. Together, the infrared-reflective and infrared-absorptive coatings may reduce an amount of environmental infrared light that reaches the gaze tracking components and reduce a thermal load on internal components within the head-mounted device.
Bibliography:Application Number: US202418444284