Patent ID: 7742368

Claim:
A near field light generating device comprising: a light source; a waveguide core which transmits light emitted from the light source; and a solid immersion mirror which generates near field light, comprising: an upper transmission surface through which light from the waveguide core is transmitted into the solid immersion mirror; a lower reflection surface, opposite the upper transmission surface, which reflects light incident thereon; lateral reflection surfaces, facing each other at sides of the solid immersion mirror, which reflect light incident thereon; and a lower transmission region disposed at a center of the lower reflection surface; wherein light reflected from the lateral reflection surfaces forms a light spot on the lower transmission region, wherein the waveguide core is a flat panel type; wherein the solid immersion mirror is a flat panel type; wherein the effective refractive index of the solid immersion mirror is greater than the effective refractive index of the waveguide core; and wherein the thickness of the solid immersion mirror is greater than the thickness of the waveguide core.