Patent ID: 9272449
Filing Date: 2016-03-01
CPC Classification: B29C,B29D,B29L,G02B

Claim Text:
1. A method for making a lens array, the method comprising: (1) providing an imprinting mold, the imprinting mold comprising a molding surface, the molding surface comprising a plurality of microstructures formed thereon, a plurality of first alignment marks adjacent to the corresponding microstructures, and a second alignment mark, wherein corresponding pairs of the plurality of first alignment marks are arranged symmetrically opposite each other across a center of each microstructure and spaced from the corresponding microstructure; (2) providing a substrate, the substrate comprising a surface, the surface including a plurality of imprinting regions, a third alignment mark formed in each of the imprinting regions, each of the imprinting regions including a plurality of molding sections, a plurality of fourth alignment marks being formed in each of the molding sections; (3) applying molding material on each of the molding sections of a selected one of the imprinting regions; (4) aligning the first alignment marks with the corresponding fourth alignment marks and aligning the second alignment mark with the third alignment mark of the selected one of the imprinting regions, the imprinting mold being able to align with each of the imprinting regions, and each molding section of the imprinting region being able to align with each of the corresponding microstructures of the imprinting mold; (5) pressing the imprinting mold on the molding material applied on the imprinting region; (6) solidifying the pressed portions of molding material on the imprinting region to obtain a plurality of lenses on the imprinting region; and (7) repeating steps (3) through (6) so as to obtain an array of the lenses formed on each of the imprinting regions.