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TAOS releases industry's first reflective color sensors

Posted: 13 Feb 2002 ?? ?Print Version ?Bookmark and Share

Keywords:texas advanced optoelectronic solutions? taos? optical sensor? color sensor reflective? color sensor?

Claimed to be the industry's first reflective color sensors, the TRS1722, TRS1755 and TRS1766 from Texas Advanced Optoelectronic Solutions combine a color LED die and a light-to-voltage converter with a corresponding color filter in a surface-mount package. The output of each device is a voltage that is directly proportional to the reflected color light.

Each sensor is designed to emit and detect one of the three primary colorsred (TRS1722), blue (TRS1766) or green (TRS1755). The sensors emit and respond to a single color, making them suitable for applications such as currency detection and validation, label edge detection, color detection in paper, textiles and cosmetics, as well as in process-control applications.

In addition, the sensors have a LED drive current as low as 250?A (TRS1766) making them suitable for low-power and battery-operated applications.

The reflective sensors combine high-output LEDs with the company's high-sensitivity color sensors based on the TSL257 light-to-voltage converter platform. The company claims designers can achieve eight bits of resolution in their designs using the TRS1722/55/66.

Each of the three TAOS color sensors is quoted at $1.36 in quantities of 1,000.

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