An ar glass based on double-layer optical waveguide and an imaging method thereof

Abstract

This application provides an AR glasses based on a dual-layer optical waveguide and its imaging method. In the AR glasses, a dual-layer optical waveguide is disposed within the frame, including a visible light waveguide layer and a near-infrared waveguide layer. The near-infrared waveguide layer has a first waveguide coupling-in region and a first waveguide coupling-out region. The first waveguide coupling-in region guides near-infrared light into the near-infrared waveguide layer and transmits it to the first waveguide coupling-out region. A near-infrared camera is housed within the frame, its optical path aligned with the first waveguide coupling-out region to receive near-infrared light and generate an image of the external environment. The visible light waveguide layer has a second waveguide coupling-in region and a second waveguide coupling-out region. The image generation unit's optical path is aligned with the second waveguide coupling-in region to generate visible light for a virtual image based on the external environment image. The second waveguide coupling-in region transmits visible light through the visible light waveguide layer to the user's eyes. This achieves physical concealment of the camera module while ensuring effective transmission of the environmental perception optical path.

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