Optical waveguide combiner and head-mounted device

Abstract

The invention provides an optical waveguide combiner and a head-mounted device. The optical waveguide combiner comprises an optical waveguide sheet, a first metasurface and a second metasurface, the first metasurface and the second metasurface are respectively arranged in areas at two ends of the optical waveguide sheet; the first metasurface and the second metasurface respectively comprise same rectangular columnar unit structures, and the rectangular columnar unit structures are arranged according to the phase difference and the diffraction efficiency to light and have different rotation angles; therefore, an incident first light beam is transmitted in the optical waveguide sheet after being diffracted by the first metasurface, and is uniformly emitted after being diffracted by the second metasurface, so that a second light beam incident from the second metasurface is uniformly emitted in a diopter divergence manner after being diffracted by the second metasurface. When the optical waveguide combiner is applied to head-mounted equipment, the first light beam and the second light beam are fused in front of human eyes, so that immersive experience can be enhanced, and the second light beam has diopter divergence, so that the optical waveguide combiner can have the function of myopia glasses.

Description

technical field [0001] The invention relates to the technical field of metasurfaces, in particular to an optical waveguide combiner and a head-mounted device. Background technique [0002] Augmented reality (Augmented Reality, referred to as AR), is a technology that calculates the position and angle of the camera image in real time and adds the corresponding image. The goal of this technology is to put the virtual world on the screen and interact with the real world. Emphasize the seamless combination of virtual and real. Augmented reality devices, such as AR glasses, are widely used in stereoscopic movies as a head-mounted device. [0003] Because there are myopic viewers among the audiences of stereoscopic movies, myopic audiences need to wear myopic glasses and AR glasses at the same time when watching stereoscopic movies, which brings poor viewing experience to myopic audiences. Contents of the invention [0004] The invention provides an optical waveguide combiner ...

AI Technical Summary

Problems solved by technology

[0004] The invention provides an optical waveguide combiner and a head-mounted device, which is used to solve the defect that the head-mounted device does not have the function of myopia correction in the prior art, and can integrate the function of the myopia correction into the head-mounted device to facilitate myopia crowd use

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