Optoelectronics

Industry’s smallest RGB, ambient light & proximity sensor

2nd August 2016
Nat Bowers
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Offering OEMs design flexibility and the ability to provide a better display viewing experience, ams has announced what it claims to be the smallest ever optical sensor module that delivers a combination of colour (RGB), ambient light and proximity sensing.

The TMD3700, measuring 4.00x1.75mm, is the smallest footprint available in the market and, with a height of 1.00mm, it’s low-profile is suited for next-gen mobile phones with extremely tight layout and mechanical design constraints. It’s wide 45° field-of-view, ambient light sensing accuracy of ±10% and operating range from 200mlx to 60Klx behind dark glass, enable smartphones to measure the surrounding light environment and automatically adjust display colour and brightness for optimal viewing.

The TMD3700 colour sensor channels each have UV and IR blocking filters and a dedicated converter allowing simultaneous data capture necessary for accurate measurements. The combination of photopic colour and ambient light sensing enables smartphones to perform real-time adjustment of the display properties; such as white point, colour gamut and colour saturation, to achieve the best visual colour accuracy.

The TMD3700 features allow dynamic elimination of both electrical and optical crosstalk producing reliable proximity detection; a function 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 Darrell Benke, Strategic Program Director, Advanced Optical Solutions, ams.

The TMD3700 is available now in production volumes, priced at $1.10 each in 1,000 unit quantities.

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