With 2000 lumens brightness and a 2100:1 contrast ratio of 500:1 the XGA (1024 x 768) 3M SCP712.M11 Super Close Projector w/ Folding Wall Mount and Speakers has the projection power to allow enough ambient light so your audience can take notes and follow along with handouts or books.
The SCP712.M11 uses the renowned Texas Instruments Digital Light Processor Digital Micromirror Device (DLP DMD) with an innovation TI calls BrilliantColor for its display panel, the part that creates the image. BrilliantColor ensures a crisp, vivid true-to-life image even when there's a lot of ambient light to punch through. As a bonus DLP devices don't require filters that have to be periodically cleaned and replaced.
The SCP712.M11 can project in the NTSC, PAL and SECAM video systems plus 720p high definition.
But this projector's most distinctive features are its super close capability combined with its included wall mount. By mounting the projector on the wall above the projection screen you eliminate the presenter's shadow obscuring the screen and keep the presenter out of the glare of the projector's light beam.
When you fold the wall mount out into projection position, the SCP712.M11 and project an 80" (more than six feet across diagonally!) image from just 40" away from the screen. The wall mount also includes two 20 watt speakers, loud enough to fill a lecture hall.
One thing you want to make sure is that this projector doesn't "walk away". So it includes a Kensington security slot through which you can lock it up with a compatible Kensington lock (available separately).