Texas Instruments OPT3001 Ambient Light Sensor (ALS)

The Texas Instruments OPT3001 Ambient Light Sensor (ALS) is a sensor that measures the intensity of visible light. The spectral response of the sensor tightly matches the photopic response of the human eye and includes significant infrared rejection.

The sensor is a single-chip lux meter, measuring the intensity of light as visible to the human eye. The precision spectral response and strong IR rejection of the device enables it to meter the intensity of light as seen by the human eye regardless of light source. The strong IR rejection also aids in maintaining accuracy when industrial design calls for mounting the sensor under dark glass for aesthetics.

The product is designed for systems that create light-based experiences for humans. It is a suitable replacement for photodiodes, photoresistors or other ambient light sensors with less human eye matching and IR rejection.