Patent ID: 8059341

Claim:
A method for forming a lens assembly, comprising: providing a first lens layer having a first transparent substrate and a first lens on the first transparent substrate; providing a second lens layer having a second transparent substrate and a second lens on the second transparent substrate; stacking the first lens layer on the second lens layer; forming a spacer structure between the first lens layer and the second lens layer; and after the spacer structure is formed, thinning the first transparent substrate to a first thickness, wherein the forming of the spacer structure comprises: forming a first spacer layer directly on the first transparent substrate; forming a second spacer layer directly on the second transparent substrate; and stacking the first lens layer on the second lens layer to directly bond the first spacer layer with the second spacer layer, wherein the first spacer layer and the second spacer layer together form the spacer structure, and each of the first spacer layer and the second spacer layer comprises a clinging polymer material.