photodiode

Measurement & identification

LEDs are used in measurement for various purposes. In distance measurement, they can provide illumination or structured light for accurate ranging. In color measurement, LEDs of specific wavelengths help determine color properties. LEDs also act as indicators in measurement devices, showing status and results. LEDs are used in identification in multiple ways. In biometric identification, like facial or iris recognition, they provide illumination for clear image capture. In barcode and QR code scanning, LEDs light the codes for accurate reading. They also aid in gesture recognition systems for user interaction.

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