MEMS and Sensors

Rohm Rolls Color Sensor for Smartphones

09 February 2015

Rohm Semiconductor has introduced a color sensor capable of detecting color temperature, brightness and RGB components of ambient light for use in smartphones and tablets.

Dubbed the BH1745NUC, the color sensor uses infrared removal technology and computing methods in order to reduce infrared rays by more than 10 times compared to conventional products, Rohm said. The sensor is compatible with dark optical windows unlike conventional color sensors that cannot provide accurate detection due to the effects of infrared interference when dark windows are used, the Japanese company said.

According to Rohm, smartphones, tablets and other display-equipped devices have begun to integrate color sensors in order to analyze the RGB components of ambient light for display image adjustment or backlight dimming. Rohm claims that conventional color sensors require a transparent optical window in order to detect visible light but with display devices adopting dark optical windows for style reasons, less visible light gets through requiring a different type of color sensor.

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