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REVIEW / 3M MPro 110

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Florent Alzieu Published on January 30, 2009
Updated on January 30, 2009
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SPECIFICATIONS

  • Technology LCoS
  • Resolution 640 x 480 pixels
  • Brightness 10 lumens
  • Contrast NC
  • Lamp life 5.5555555555556 hrs
  • Sound level 0 dB
3M is the founder of the LcoS technology (also in the Aiptek Pocket Cinéma V10). Out of the three mini-projectors tested, this is the most professional model, mainly because it comes with a VGA connection.

Handling

Smaller than the Aiptek, the Mpro comes with a power adapter, an AV cable kit and a VGA cable. The unit measures 0.9 x 4.5 x 2.0 inches and weighs 5.6 ounces. It is slightly bigger than the Optoma, but that is not the problem at all. However the fact that there is no speaker, no memory card slot or internal memory is unfortunate, as it becomes a product that can’t stand on its own.




Projected image

To connect to a video source you have either a VGA or a composite connection. We strongly recommend using VGA for a better signal and less video noise (parasite pixels). The Mpro is the only one of the 3 projectors to offer VGA and despite this, it is the one that comes in last in our tests. There are four reasons for this. The image is washed out and appears muted. Moreover it is deformed in the corners (check out the Aiptek test to see how that works). The composite connection is unsatisfying with much noise on the images. Finally, the maximum size of the image is restricted by the focus. At 1,5 m the focus is fragile and beyond 1,8 m, plain bad, with blurry images impossible to correct.

However for a travelling businessman this is the perfect product. Who needs striking colours for a PowerPoint presentation? What comes really handy in this case is VGA that allows crisp images directly from the laptop.
How does LcoS work?
The path of light goes as follows. The lamp on the left gives a white light. This beam is divided via a series of prisms into three rays. The rays hit the red, green and blue LCOS reflective panels which decide, depending on the colour to be created, whether or not to send the light. The three coloured beams are combined via a prism and compose the final image.

When applied to a LED mini-projector there are 3 LEDs (red, green and blue) instead of the lamp. The picture comes from a tiny LCoS (liquid crystal on silicon) panel inside the machine that works the same way.

PROS

  • LED life 20 000 hours of operation
  • smaller than the V10 by Aiptek
  • VGA connect
  • Silent

CONS

  • No speaker
  • Washed out image
  • no internal memory
  • no memory card slot

CONCLUSION 2/5

The 3M Mpro 110 is a device for professionals (tiny and with VGA) and would deserve three stars in that sole context. For for the general public however, because of the washed out images and the poor quality via the composite connection, it looses a star.
2 3M MPro 110 DigitalVersus 2009-01-30 00:00:00
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