Patent ID: 8190013

Claim:
An optical system, comprising: a photo sensor; a first WLO lens module, disposed on the photo sensor, and comprising a first transparent substrate and a first lens, wherein the first lens is disposed on the first transparent substrate and the materials of the first transparent substrate and the first lens are different; a second WLO lens module, located above the first WLO lens module, and a space being maintained between the first WLO lens module and the second WLO lens module, the second WLO lens module comprising a second transparent substrate and a second lens, wherein the second lens is disposed on the second transparent substrate and the materials of the second transparent substrate and the second lens are different; and a focusing motor, located between the first WLO lens module and the second WLO lens module, and suitable for moving the first WLO lens module or the second WLO lens module to adjust the space a plurality of spacer layers, respectively disposed between the first transparent substrate and the focusing motor and between the second transparent substrate and the focusing motor.