PASSIVE OPTICAL DEVICE AND LIGHT SOURCE MODULE

摘要

A passive optical device includes a first substrate, a second substrate, a stabilized liquid crystal (LC) layer and a surface micro-structure layer. The stabilized LC layer is disposed between the first substrate and the second substrate and has a polarization beam-splitting function via an aligning direction of liquid crystal molecules. The surface micro-structure layer is disposed on an exterior surface of at least one of the first substrate and the second substrate and used to produce a light-collecting effect.