A Chinese company called DBest has released what we believe is the smallest portable projector in the world at CES 2011, measuring only 88x56x21mm and weighing only 83g.
The P01 is roughly 30 per cent smaller than most other pocket projectors we've seen in the past and uses LCOS display technology to bring down power consumption and size.
It boosts a nominal luminance brightness of 15 lumens and has a resolution of 640x480 pixels which should be fine; we would have prefered a 800x480 pixel model with a 16:10 aspect ratio.
Dbest says that the bulb will have a life span of 20,000 hours and should be able to project pictures of up to 50-inch from a distance of two meters.
It has a manual focus control and only needs a USB port which means that in theory, you could have more than one projector connected to a computer; the P01 should be available soon in the UK and pricing has yet to be confirmed.