OPTICAL SYSTEMS FOR ELECTRONIC DEVICES WITH DISPLAYS

    公开(公告)号:WO2018226367A1

    公开(公告)日:2018-12-13

    申请号:PCT/US2018/032445

    申请日:2018-05-11

    Applicant: APPLE INC.

    Abstract: An electronic device may have a pixel array. A light source may illuminate the pixel array to produce image light. The image light may pass through a multi-element lens and may be coupled into a waveguide using an input coupler such as a prism. An output coupler such as a diffraction grating may couple the image light out of the waveguide and towards a user. The user may view the image light and may observe real-world objects through the waveguide. The waveguide may have locally modified portions that define an aperture stop at a distance from an exit surface of the multi-element lens. The multi-element lens may have first and second achromatic doublets and first and second singlets between the first and second achromatic doublets. The lens elements of the multi-element lens may include lens elements with aspheric surfaces.

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