What Does an Illuminance Sensor Sense?
An illuminance sensor, also known as a light sensor, measures the intensity of visible light as perceived by the human eye. It quantifies illuminance in units such as lux or foot-candles, providing critical data for applications ranging from smart lighting to photography.
How It Works
These sensors use photodiodes or phototransistors to convert light energy into electrical signals. Calibrated to match human eye sensitivity, they ensure accurate readings across various environments.
Common Applications
From automatic brightness adjustment in smartphones to energy-efficient building management systems, illuminance sensors optimize performance and user experience. They’re also vital in agricultural tech for monitoring plant growth conditions.
Frequently Asked Questions
Can illuminance sensors detect colors?
No, standard illuminance sensors only measure light intensity, not color spectrum. For color detection, RGB sensors are used instead.
How accurate are these sensors?
High-quality sensors can achieve ±5% accuracy under calibrated conditions, though environmental factors may affect performance.
To explore technical specifications and implementation examples, learn more about what does a illuminance sensor sense in professional applications.
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