photodetector

[foh-toh-di-tek-ter]

noun

photosensor.
Electronics. any device, as a photodiode, phototube, or photovoltaic cell, that uses the photoelectric effect to convert radiant energy into an electrical signal.

Origin of photodetector

First recorded in 1945–50; photo- + detector

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018