photoelectric


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photoelectric

, photoelectrical
of or concerned with electric or electronic effects caused by light or other electromagnetic radiation

photoelectric

[¦fōd·ō·i′lek·trik]
(electronics)
Pertaining to the electrical effects of light, such as the emission of electrons, generation of voltage, or a change in resistance when exposed to light.

photoelectric

Converting photons into electrons. When light is beamed onto a metal, electrons are released from its atoms. The higher the light frequency, the more electron energy released. Photonic sensors of all kinds work on this principle. They sense light and cause an electric current to flow.

Although most people think Einstein won the Nobel Prize because of his Theory of Relativity, it was actually due to his discovery of the photoelectric effect. He theorized that light was made of particles (later called photons) and that it carried an amount of energy exactly proportional to its frequency. See phototransistor and photovoltaic.
References in periodicals archive ?
San Francisco, CA, June 03, 2015 --(PR.com)-- The global photoelectric sensors market has till date retained its lengthened legacy; however, recently newfangled sensors such as low-end vision sensors as well as ultrasonic sensors are setting a headlong hard-hitting counteraction for photoelectric sensors by functioning in similar application areas.
The open-circuit voltage [V.sub.oc] (V), the short-circuit current density [J.sub.sc] (mA/[cm.sup.2]), the fill factor (FF), and the photoelectric conversion efficiency ([eta]%) of each DSSC were also measured.
Unlike a photoelectric sensor which essentially indicates whether there is something detected or not, the Checker has a few advantages, such as being able to detect features (e.g., graphics) and operating without precise part handling or fixturing.
Key words: Saturn, photometry, photoelectric measurements.
IFM ELECTRONIC reports its OID photoelectric sensor, considered a game-changer when it was launched less than two years ago, has now been joined by a new version featuring the safer class one laser.
The industry-standard housings are threaded-barrel M30x1.5 style for proximity and photoelectric sensors.
In current studies of DSSCs, DSSCs are mostly sensitized by chemical synthetic dyes because their photoelectric conversion efficiency can reach 11-12% [3, 4].
Photoelectric sensors feature the SmartReflect principle for reliable object detection.
This sensitivity provides an extremely reliable standard of detection that is unattainable with photoelectric sensors.
A common way of detecting the ASRS position is based on using four photoelectric sensors, mounted in a square pattern on the ASRS.
Long-range ML7 background suppression photoelectric sensors feature a compact 31 mm x 11 mm x 23 mm housing and deliver a sensing range of up to 350 mm.