Posted 07/02/09 at 07:30:19 PM by Michael Brown

Optoma picked an appropriate moniker for its Lilliputian-size video projector. The Pico PK101 isn’t just small, it’s almost inconceivably tiny. It measures just 1.97 inches wide by 4.06 inches long by 0.59 inches thick, and it weighs only four ounces.

Texas Instruments’ DLP (Digital Light Processor) technology deserves much of the credit for making such a product possible. DLP projectors create an image by bouncing light off microscopic mirrors arranged in a matrix on a semiconductor. Each mirror represents a pixel in the image and swivels to either reflect light through the lens or to an internal heatsink. Toggling these two states on and off creates a grayscale. Color pixels are created by using either a color wheel or a colored light source. Optoma uses a non-replaceable LED for its light source, which it claims should last for 20,000 hours. There’s a tiny speaker and a 0.5-watt amp onboard, too.

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