Snap Inc. (20250102808). WAVEGUIDE AND DIFFRACTION GRATING FOR AUGMENTED REALITY OR VIRTUAL REALITY DISPLAY

WAVEGUIDE AND DIFFRACTION GRATING FOR AUGMENTED REALITY OR VIRTUAL REALITY DISPLAY

Organization Name

Snap Inc.

Inventor(s)

Alexandra Crai of Abingdon GB

Claran Phelan of Wallingford GB

ohmed Salim Ibrahim Valera of Sutton Coldfield GB

David Nicholas Crosby of Oxford GB

WAVEGUIDE AND DIFFRACTION GRATING FOR AUGMENTED REALITY OR VIRTUAL REALITY DISPLAY

This abstract first appeared for US patent application 20250102808 titled 'WAVEGUIDE AND DIFFRACTION GRATING FOR AUGMENTED REALITY OR VIRTUAL REALITY DISPLAY

Original Abstract Submitted

a waveguide for use in a virtual reality, vr, or augmented reality, ar, device, is disclosed. the waveguide comprising an input region configured to couple light into the waveguide so that it propagates under total internal reflection (tir) within the waveguide, and an output region comprising optical structures configured to receive image bearing light from the input region. the output region comprises a plurality of zones having different diffraction to each other, the plurality of zones comprising diffraction efficiencies so as to reduce rainbow artefacts.