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photodiode

photodiode

1 6.6
A small device that makes electricity when light hits it to show how bright the light is
  • noun
  • /ˈfoʊtoʊˌdaɪoʊd/
  • Specialized
translation icon : fotodiodo
  • When exposed to sunlight, the photodiode generates a small electric current that can be measured.
  • Avalanche photodiode
  • Photodiode array
  • silicon photodiode

And each one of these pairs of photodiodes is used to do phase detection, focusing.

Examples

  • A photodiode array is utilized to detect the amount of light that passes through the solution being examined.

    Academic text (2013)
  • The light valves could be operated under a polarizing microscope, and the reflectivity monitored by a silicon photodiode.

    Academic text (2000)
  • The light measurement uses an exclusive photodiode.

    Academic text (2005)
  • And we have photodiodes all around our finger.

  • And each one of these pairs of photodiodes is used to do phase detection, focusing.

  • The photodiodes face the zenith direction and have a field of view of 60 degrees.

    Blog text (31)
  • To mitigate dust degradation, a magnetic ring has been placed around each photodiode with the aim of maximizing their operational time.

    Blog text (31)
  • In the online monitoring system, optical signals from each blade tip (or optical revolution sensors) are detected by a photodiode circuit.

    Academic text (1996)
  • Optobionics' microchip has 5,000 photodiodes, or solar cells, that are intended to stimulate the remaining healthy retinal cells and use them to process images.

    Academic text (2003)
  • The linear CCD scanner shown schematically in Figure 3a consists of a single row of photodiodes, which capture the photons.

    Academic text (1992)

Synonyms

photovoltaic cell
vsphotodiode
  • Specialized
2 4.6

A device that changes sunlight into electricity

generates current to sense light rather than to produce usable power
photocell
vsphotodiode
  • Specialized
2 6.2

A device that senses light and makes an electric signal

generates current directly rather than focusing on producing a signal
photodetector
vsphotodiode
  • Specialized
1 7.2

A device that senses light and makes an electric signal

generates current directly instead of primarily producing a signal for detection
phototransistor
vsphotodiode
  • Specialized
1 7.4

A small device that changes its electric signal when light falls on it

generates current rather than primarily altering an existing output
photoconductive cell
vsphotodiode
  • Specialized
1 8.1

A small device that lets more electricity pass when light hits it

generates current directly instead of mainly altering resistance when lit
photoelectric cell
vsphotodiode
  • Specialized
4.6

A device that makes a small electric signal when light hits it to detect or measure light

generates electric current directly for sensing light rather than general energy use
photoreceptor
vsphotodiode
  • Specialized
6.3

A part in a camera or machine that detects light and makes an electric signal

generates current directly and is not limited to instrument use

How Sensitive

photomultiplier
  • Specialized
1 9.4
photodiode
  • Specialized
1 6.6

Surface Forms

photodiode singular
photodiodes plural

Morphology

photodiode = diode (semi-transparent) = photo + diode

The device is clearly built from 'photo-' plus 'diode', but the specialized technical meaning is not fully predictable for an average learner.

Etymology

Photodiode is like a tiny electrical 'eye': photo- means 'light' (as in photograph) and diode is an electric part that makes or controls current. So a photodiode makes an electric current when light hits it, which is why it is used to detect or measure light.