ADI sells MEMS sensors to InFocus

May 20, 2004 – Analog Devices Inc. (ADI) is providing accelerometers to InFocus Corp. to correct image distortion in two projectors.

Wilsonville, Ore.-based InFocus has selected ADI’s iMEMS inertial sensors for its LP540 and LP640 projectors. The sensors measure the projection angle and determine the level of correction necessary so images can become square and undistorted. The function adjusts the so-called “keystone effect” caused by projected light hitting a vertical screen at an angle.

Norwood, Mass.-based ADI said it also has supplied accelerometers to several other undisclosed companies for keystone correction in projectors. Rival MEMSIC Inc., based in North Andover, Mass., has shipped sensors for the same purpose to Toshiba, NEC and Panasonic.

InFocus was one of the first portable projector makers to incorporate another commercially successful MEMS device into its products: A digital micromirror device, at the heart of Texas Instruments’  Digital Light Processing (DLP) system, contains a million mirrors flipping 5,000 times a second to reflect clear, bright images. InFocus first integrated DLP into a business projector in 1997.

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