Patent ID: 7692256
Filing Date: 2010-04-06
Classification: G02B,H01L,H04N

Abstract:
1. A method of producing a wafer scale package including two substrates and a plurality of optical elements, wherein the substrates are stacked in an axial direction, said method comprising the following steps: providing a first substrate and a second substrate, wherein at least one of the first substrate and the second substrate is pre-shaped and comprises at least one recess; providing a replication tool having a plurality of replication sections having structural features corresponding to a shape of the optical elements; producing the optical elements on the first substrate by moving the replication tool and the first substrate towards one another, with a replication material in a deformable state located between the replication tool and the first substrate, causing the first substrate to abut against the replication tool with replication material remaining between the replication sections and the first substrate, hardening the replication material, and separating the first substrate from the replication tool; moving the first substrate and the second substrate towards one another and causing the first substrate to abut against the second substrate such that at least one cavity is formed in the at least one recess, wherein at least one optical element is located in the at least one cavity; connecting the first substrate and the second substrate.