Patent ID: 8173949

Claim:
An image sensing apparatus comprising: a lens group which forms a concave focal surface; an optical unit comprising: a curved top surface, a flat bottom surface, and a plurality of light guides, the curved top surface corresponding to the concave focal surface, the optical unit being disposed under the lens group so that the curved top surface coincides with the concave focal surface, and the plurality of light guides collecting light emitted from the lens group and guiding the light to the flat bottom surface; and an image sensor disposed under the optical unit, wherein the plurality of light guides are a plurality of artificial ommatidia and the optical unit is an artificial ommatidia unit, wherein each of the plurality of light guides of the optical unit comprises: a micro lens disposed at the top surface of the optical unit, and a waveguide disposed under the micro lens, which transmits the light entering the micro lens, wherein each of the plurality of light guides is perpendicular to a respective tangent of the curved top surface where a top surface of the waveguide intersects the curved top surface, such that a first light guide, of the plurality of light guides, is perpendicular to a first tangent where a top surface of a waveguide of the first light guide intersects the curved top surface, and a second light guide, of the plurality of light guides, is perpendicular to a second tangent where a top surface of a waveguide of the second light guide intersects the curved top surface, and wherein the first tangent is different from the second tangent.