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Japan : ROHM unveils colour sensor for smartphones, tablets.

The development of a color sensor for display-fitted devices such as smartphones and tablets capable of detecting the color temperature, brightness, and RGB components of ambient light has been declared by ROHM Semiconductor.

Original infrared removal technology and computing methods to attain the industry's highest* infrared cutoff characteristics, lessening the impacts of infrared rays by over 10x compared with conventional products are influenced by the BH1745NUC. This allows compatibility with dark (low permeability) optical windows unlike conventional color sensors that cannot provide precise detection due to the impacts of infrared interference when dark windows are used.

A huge number of smartphones, tablets, and other display-fitted devices have started to incorporate color sensors in order to analyze the RGB components of ambient light for display image adjustment or perform backlight dimming based on the surrounding brightness levels in recent years.

Conventional color sensors need a transparent optical window in order to precisely detect visible (i.e. RGB) light. However, the design trend in many smartphones and portable devices is to implement dark optical windows which, although more stylish, make it hard to accurately detect colors, since less visible light gets through and the light that does permeate gets mixed in with IR rays.

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Publication:Mena Report
Date:Feb 11, 2015
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