OPTICAL SENSORS FOR DETECTING RELATIVE MOTION AND/OR POSITION AND METHODS AND SYSTEMS FOR USING SUCH OPTICAL SENSORS

摘要

An optical sensor, according to an embodiment of the present invention, includes a photodetector region and a plurality of slats over the photodetector region. In an embodiment, the slats are made of an opaque polymer material, such as an opaque photoresist. In an embodiment, the slats are angled relative to a surface of the photodetector region.