Component · Photonics, MEMS & Sensors
Proximity sensor
A short-range presence detector that emits infrared light and measures the reflected return, or in capacitive form senses a body's effect on an electric field. It is used to disable a phone touchscreen when held to the ear.
- Also known as
- Prox sensor, PS
- Type
- Component
- Domain
- Photonics, MEMS & Sensors, Sensors
Notes
Increasingly replaced in phones by short-range time-of-flight sensors, which are immune to reflectance variation.
Related terms
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