Optical device and wearable device comprising same

Abstract

An optical device, according to one embodiment, comprises: a light guide comprising a first surface and a second surface; and a diffraction structure disposed on any one surface among the first surface and the second surface. The diffraction structure comprises: a first metal layer disposed on one surface of the light guide and comprising a plurality of diffraction patterns which are spaced apart from each other; and a second metal layer disposed on the upper surface of the diffraction patterns.

Dependencies are inferred from the claim text.