Optical waveguide system and augmented reality device

Abstract

An optical waveguide system and an augmented reality device are disclosed and have advantages of reducing the light leakage rate and improving the light energy efficiency. The optical waveguide system comprises an optical waveguide, the optical waveguide comprises a first side face and a second side face opposite each other; the first side face is provided with a grating; the second side face is provided with a light-leakage prevention element configured to reduce light emitted from the second side face. The light-leakage prevention element may reflect, diffract or absorb light incident to the light-leakage prevention element. Therefore, light emitted from the second side face of the optical waveguide (1) can be reduced, that is, a light leakage phenomenon is reduced; and the light can also be reflected to the grating by reflection or diffraction, thereby improving the utilization rate of light energy, that is, improving the light efficiency.

Dependencies are inferred from the claim text.