photosensor
Detects ambient light
A photosensor is a device that detects light and converts it into an electrical signal.
Photosensors appear in cameras, automatic doors, streetlights, and countless other applications where machines need to respond to light levels or movement: The photosensor triggers the porch light at dusk.
Light-sensitive amplifying component
- LDROne who directs
- CCDLight-sensitive imaging chip
- CMOSSemiconductor logic architecture
- photodetectorLight-to-electricity conversion device
semiconductor · silicon · germanium · junction · anode · cathode · substrate · lens
Spatial repetition interval
- infraredHeat-bearing electromagnetic waves
- ultravioletWavelengths shorter than violet
- photoelectricLight-induced electrical activity
- sensitivityResponsiveness to stimuli
threshold · saturation · signal · noise · bandwidth · absorption · reflection · transmission
Adjusting for measurement accuracy
- accuracyDegree of correctness
- resolutionFormal decision or determination
- linearityStraight-path property
- repeatabilityCapacity for consistent duplication
sensitivity · SNR · gain · offset · range · precision · tolerance · drift
Image capturing device
- colorimeterDevice measuring color intensity
- spectrometerMeasures electromagnetic radiation properties
Urgent warning signal
- surveillanceSystematic observation of subjects
- guardWatchful defensive attention
phototransistor
Light-sensitive amplifying component
photodetector · semiconductor · silicon · germanium · junction · anode · cathode · substrate · lens · filter
wavelength
Spatial repetition interval
- infraredHeat-bearing electromagnetic waves
- ultravioletWavelengths shorter than violet
- photoelectricLight-induced electrical activity
sensitivity · threshold · saturation · signal · noise · bandwidth · absorption · reflection · transmission · optical
calibration
Adjusting for measurement accuracy
- accuracyDegree of correctness
- resolutionFormal decision or determination
- linearityStraight-path property
repeatability · sensitivity · SNR · gain · offset · range · precision · tolerance · drift · stability
camera
Image capturing device
- colorimeterDevice measuring color intensity
- spectrometerMeasures electromagnetic radiation properties
alarm
Urgent warning signal
- surveillanceSystematic observation of subjects
- guardWatchful defensive attention
robotics
Automaton design field
photosensorpressure sensor
Instrument measuring applied force
humidity sensor · touch sensor · heat sensor · motion sensor · proximity sensor
photosensorLED
Semiconductor that glows
light source · lamp · laser · illuminator · light bulb