Patent ID: 8385013

Claim:
An optical module comprising: a substrate; an optical element directly built in a predetermined area of the substrate; and a piezoelectric element directly formed on the substrate along the circumference of the optical element, wherein the piezoelectric element drives the optical element, by displacing the predetermined area of the substrate, in such a manner to displace the optical element in the direction of the optical axis of the optical element or to incline the optical axis of the optical element, and includes a lower electrode layer formed on the substrate, a piezoelectric thin-film formed on the lower electrode layer, and an upper electrode layer formed on the piezoelectric thin-film by patterning, wherein the upper electrode layer is formed, by patterning, in ring form along the circumference of the optical element, wherein the substrate has an opening having a predetermined depth on the back side of the predetermined area of the substrate, and wherein the diameter of the outer circumference of the ring of the upper electrode layer, which is formed in ring form, is greater than the diameter of the opening.