OPTICAL SENSOR AND ELECTRONIC DEVICE COMPRISING SAME

An electronic device includes: a light-emitting unit disposed on a substrate, where the light-emitting unit includes light sources configured to emit light in different wavebands; first optical waveguides configured to transfer light emitted through the light-emitting unit in a first direction parallel to a surface of the substrate; and a light concentration change member configured to change an angle of light such that light transferred from the first optical waveguides is discharged in a second direction substantially perpendicular to the first direction by the light concentration change member, where the light concentration change member has a structure configured to concentrate, at one point, light rays transferred from the first optical waveguides in different positions.