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15. (WO2017180403) WAVEGUIDES WITH EXTENDED FIELD OF VIEW

Pub. No.:    WO/2017/180403    International Application No.:    PCT/US2017/026253
Publication Date: Fri Oct 20 01:59:59 CEST 2017 International Filing Date: Fri Apr 07 01:59:59 CEST 2017
IPC: G02B 27/00
G02B 27/01
Applicants: MICROSOFT TECHNOLOGY LICENSING, LLC
Inventors: VALLIUS, Tuomas
TERVO, Jani
Title: WAVEGUIDES WITH EXTENDED FIELD OF VIEW
Abstract:
An input-coupler of an optical waveguide couples light corresponding to the image and having a corresponding FOV into the optical waveguide, and the input-coupler splits the FOV of the image coupled into the optical waveguide into first and second portions by diffracting a portion of the light corresponding to the image in a first direction toward a first intermediate-component, and diffracting a portion of the light corresponding to the image in a second direction toward a second intermediate-component. An output-coupler of the waveguide combines the light corresponding to the first and second portions of the FOV, and couples the light corresponding to the combined first and second portions of the FOV out of the optical waveguide so that the light corresponding to the image and the combined first and second portions of the FOV is output from the optical waveguide. The intermediate-components and the output-coupler also provide for pupil expansion.