SHELL WITH BRIGHTNESS GRADIENT EFFECT AND METHOD OF PREPARING THE SAME

摘要

A shell with brightness gradient effect and a method of preparing the same are provided. The shell comprises: a substrate (1) defining a first surface and a second surface; and a metal coating (2) disposed on the first surface of the substrate (1) and having a protrusion, a cross section of the protrusion having a parabolic top, and a light transmittance of the thickest portion of the protrusion being about 50% or more smaller than that of the thinnest portion of the protrusion.