Selectivity by polarization

摘要

Representative implementations of devices and techniques provide selectivity for imaging devices and systems. Polarization may be applied to emitted light radiation and/or received light radiation to select a desired imaging result. Using polarization, an imaging device or system can pass desired light radiation having desired information and reject unwanted or stray light radiation.

主权项

1. An apparatus, comprising:
an emitter arranged to emit light radiation, illuminating at least a portion of a preselected area; a first polarizer associated with the emitter and arranged to polarize the light radiation in a first polarization; an image sensor arranged to detect an object within the preselected area based on receiving a reflection of the light radiation, the image sensor further arranged to detect the object within the preselected area based on time-of-flight principles; and a second polarizer associated with the image sensor and arranged to pass light radiation having the first polarization and to attenuate light radiation not having the first polarization.