AR glasses

Abstract

The embodiment of the invention relates to the technical field of optics, in particular to AR glasses. The embodiment of the invention provides AR glasses. The AR glasses comprise a glasses frame, a micro-projection device and at least one optical waveguide, wherein the spectacle frame comprises spectacle legs and a spectacle frame, and the optical waveguide comprises a waveguide substrate, a coupling-in area and a coupling-out area; the waveguide substrate is embedded in the mirror frame; the coupling-in area is arranged in the left upper area, close to the glasses legs, of the waveguide substrate, and / or the coupling-in area is arranged in the right upper area, close to the glasses legs, of the waveguide substrate, and the micro-projection device is arranged on the glasses legs, so that the sight line of a user is not shielded, and the size of the AR glasses is reduced; and meanwhile, a two-dimensional grating or a crossed one-dimensional grating is arranged in the coupling-in area, so that the bright band phenomenon of the central area can be solved, and the light field is uniformly distributed.

Description

Technical field [0001] Embodiments of the present invention relate to the field of optics, and more particularly to an AR glasses. Background technique [0002] Ar is a technology combined with real and virtual images, video, 3D model applications, and this technology is to interact in the real world on the screen. There are currently Google, Microsoft and other companies launched commercial AR glasses, leading the development and application of AR technology. [0003] The optical waveguide-based AR glasses are one of the most large-scale application prospects of AR glasses. Due to the small optical waveguide structure, the quality is light, and the optical function is powerful, it is a core device for achieving lightweight AR glasses. The optical waveguide currently based on the relief grating is the mainstream selection of the AR glasses light waveguide. The relief grating waveguide is currently a waveguide scheme based on one-dimensional gratings and a waveguide based on two-d...

AI Technical Summary

Problems solved by technology

[0004] However see figure 1 , in the existing AR glasses, the in-coupling area A is often placed directly above the out-coupling area B, so that the projection light engine is also directly above the lens, which not only blocks the user's line of sight above the front, but also is not conducive to reducing the overall size of the AR glasses. volume; at the same time, light field tracing is performed on this structure, such as figure 2 As shown, it is found that there will be an obvious bright band phenomenon in the central area, and the uniformity of the light field is poor

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