In March 2012 bTendo and STMicroelectronics announced an agreement to jointly develop the world's smallest MEMS LBS projector. Later on the companies unveiled a first prototype and finally ST acquired bTendo in August 2012. At CES, ST unveiled their latest optical engine prototype, a 720p, 15 lumens projector module and a tiny projector prototype, probably the smallest battery-powered one we've seen.
The optical engine is tiny indeed - only 1.7cc (5mm high). In the photos you can see the engine together with the core board. ST also showed a complete HDMI projector prototype - which is only 8cm x 4cm x 6mm, with most of the space taken by the battery. This projector is basically the size of a credit card only thicker...
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