A Low-Cost Miniature Multispectral Image Sensor And Its Applications In Consumer Electronics

In this article, we present a low-cost miniature multispectral image sensor that can be easily adapted to consumer electronic devices. It is based on self-alignment concept, and can be massively produced with standard silicon wafer processing, wafer-level optics, and wafer-level packaging processes, which greatly reduces the fabrication cost. We demonstrated its potential applications in two examples: liveness detection and partial color temperature estimation.