electric eye

electric eye

n. An electrical device that monitors motion in a given region by using a photoelectric cell to detect variations in the intensity of light.

electric eye

n (Electronics) another name for photocell

pho•to•cell

(ˈfoʊ toʊˌsɛl)

n. a solid-state electronic device that converts light into electrical energy by producing a voltage or that uses light to regulate the flow of current: used in automatic control systems for doors, burglar alarms, lighting, etc. [1890–95]

Thesaurus

Noun

1.

electric eye - a transducer used to detect and measure light and other radiationsmagic eye, photocell, photoconductive cell, photoelectric celldetector, sensing element, sensor - any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive mannerphotocathode - a cathode that emits electrons when illuminatedselenium cell - a photoelectric cell that uses a strip of seleniumtransducer - an electrical device that converts one form of energy into another