1. A lens assembly, comprising: a plurality of lenses formed by stacking and bonding a plurality of lens wafers, each lens wafer including a plurality of lens units, and then dicing the stacked and bonded plurality of lens wafers according to lens unit, wherein each of the lenses of the plurality of lenses includes curvature parts and peripheral parts, wherein the peripheral parts of the plurality of lenses are coupled to each other, wherein the curvature parts of the plurality of lenses have different curvatures according to the lenses; and a stop substrate interposed between lenses of the plurality of lenses in order to adjust an amount of light, wherein the stop substrate is provided with a hole passing through the stop substrate.