electric eye

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electric eye:

see photoelectric cellphotoelectric cell
or photocell,
device whose electrical characteristics (e.g., current, voltage, or resistance) vary when light is incident upon it. The most common type consists of two electrodes separated by a light-sensitive semiconductor material.
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electric eye

[i¦lek·trik ′ī]

photoelectric cell

A device incorporated in an electric circuit; in response to light that falls on the cell, the electrical output or the resistance varies; used in measuring devices and in control devices that depend on illumination level or the interruption of a light beam.
References in periodicals archive ?
Electric Eye, for instance, offers a range of Philips solutions starting at less than 1 [pounds sterling] a day for a standard black and white system to around 2 [pounds sterling] a day for a fully installed colour quad system complete with four cameras and time lapse VCR recording.
The system tells the operato which part number to install in the engine before him or her, lights a lamp ove the correct pigeonhole and activates an electric eye across it.
With the format skewing heavily toward women, Bos said items such as hair removal, electric eye lash curlers and foot baths are top sellers.
An electric eye that scans all food-grade peanuts for visual defects could one day do the same for wheat kernels.
When garbage does down in breaks an electric eye and compacts the garbage right into a plastic bay," he said.
Underwood says he is happy with $68,00 phone system; her only complaint is with the electric eye in the cradle, which disconnects when the handset is set down.
There is a screen of varying transparency mounted in the main camera lens system that is moved in accord with the amount of light that the electric eye sees, letting more light fail on the photographic plate when necessary.
Throw on that Electric Eye Muscle 7", kick up your heels and swing your fists
Container transfer and indexing is accomplished via chain driven live roller conveyors with electric eye sensing.
An electric eye at the feed throat detects when material is tossed into the throat and starts up the machine.
Nippon Oil, Sanyo Electric eye joint fuel cell venture
Container transfer and indexing are accomplished via chain driven live roller conveyors with electric eye sensing.