What limits detection accuracy in low-cost light sensors?

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What limits detection accuracy in low-cost light sensors?

Asked on Oct 24, 2025

Answer

Detection accuracy in low-cost light sensors is often limited by factors such as sensor sensitivity, noise, and environmental conditions. These sensors typically use photodiodes or phototransistors, which may not have the precision or dynamic range of higher-end models, affecting their ability to accurately measure light intensity.

Example Concept: Low-cost light sensors often suffer from limited sensitivity and higher noise levels, which can lead to inaccurate readings. Environmental factors like temperature fluctuations, ambient light interference, and sensor aging can further degrade performance. These sensors may also have a narrower spectral response, limiting their effectiveness in varying lighting conditions.

Additional Comment:

Low-cost sensors may not include advanced filtering or compensation algorithms.
Calibration against a known light source can improve accuracy.
Shielding the sensor from direct sunlight can reduce interference.
Regular maintenance and recalibration can help maintain accuracy over time.

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