Colour and brightness feedback supports colour flexibility for automotive and other applications

4 October 2006 Opto-Electronics

Avago’s ADJD-E622-QR999 is claimed to be the industry’s first RGB (red, green, blue) analog-output colour sensor that meets the specifications of the Automobile Electronics Council’s AEC-Q100 Stress Test Qualification for integrated circuits, which makes it ideal for use in the harsh automotive environment.

The device is a monolithic CMOS IC solution with uniform colour filter arrays throughout the photodiode active area. This helps to resolve potential inaccuracies caused by light gradient, optical aperture misalignment and tilting and irregularities of the package surface.

In vehicle interiors, the device converts coloured light to accurate, proportional red, green and blue voltage outputs. These outputs can potentially be used for open-loop or closed-loop optical feedback for light sources in navigational panels, dashboard and interior lighting. Its use in a closed-loop optical feedback system assures consistent colour and brightness for RGB LED lighting and backlighting systems such as in LCDs.

The combination of a colour sensor with RGB LED lighting replaces the limited range of colours available from conventional LEDs with a virtually unlimited palette of lighting colours.

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