Smallest Optical Sensor Module For Smartphones


ams AG claims the smallest ever optical sensor module, measuring just 4 x 1.75 x 1 mm, making it optimal for next-generation mobile devices with ultra-thin profiles and narrow bezels. Furthermore, the module combines color (RGB), ambient light and proximity sensing, providing OEMs with design flexibility and the ability to provide a better display viewing experience.

The TMD3700’s wide 45 degree field-of-view, ambient light sensing accuracy of +/-10% and operating range of 200mlux to 60Klux behind dark glass, enable smartphones to measure the surrounding light environment and automatically adjust display color and brightness for optimal viewing, according to the company.

The combination of photopic color and ambient light sensing enables smartphones to perform real-time adjustment of the display properties; such as white point, color gamut and color saturation, to achieve the best visual color accuracy.

For reliable proximity detection, the module features allow dynamic elimination of both electrical and optical crosstalk. This function is used by smartphone manufacturers to disable the touchscreen display when it is held close to the user’s face. In addition, the module’s integrated IR LED is calibrated for maximum performance and consistent operation.


“Smartphone OEMs are continually condensing their product profiles while seeking ways to improve display performance for the best visual appeal. The availability of the TMD3700 light sensing and proximity detection performance in a compact package, enables innovative display management for today’s space-constrained smartphones”, said Darrel Benke, Strategic Program Director for Advanced Optical Solutions at ams.

The TMD3700 is available now in production volumes. Unit pricing is $1.10 in order quantities of 1,000.

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For more information, view the full Press release.



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