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Home > News > Multi-spectral colour sensor optimised for blue-light well-being

Multi-spectral colour sensor optimised for blue-light well-being

AMS colour sensor AS7264N spectrum

Called AS7264N, it is a “tri-stimulus sensor which provides measurements of colour that closely match the human eye’s response to the visible light spectrum,” said the firm. “The sensor also accurately measures blue-light wavelengths, which researchers have linked to important health effects such as disruption or management of the circadian rhythm, accelerated eye aging, and eye strain.”

AMS colour sensor AS7264NIt is based on the ‘AS72xx product platform’ which has spawned light and colour sensors from near-UV to near-IR for spectral and lighting applications – here is another one.

Colour selectivity comes from on-wafer silicon interference filters – matching the characteristics of the XYZ standard observer model as specified by the CIE 1931 standard in this case, plus the two blues and near infra-red.

The filters are claimed to exhibit”minimal” drift over time and temperature, removing the need for calibration of products. Programmable on-chip LED drivers enable direct control of synchronised electronic shutter functionality, and output is thorough an I2C bus.

AMS colour sensor AS7264NAS7264N comes in a 4.5 x 4.7 x 2.5mm land grid array (LGA) apertured package, and is intended for luminaires and connected sensor packs in “emerging applications of human-centric lighting and smart building control”, said AMS. “Manufacturers are able to deliver real-time smart colour monitoring to measure and respond to end-users’ exposure to blue light wavelengths.”