Optoma TX631

Optoma TX631 – Cheap but capable 3D DLP projector. High brightness of 3500 lumen makes the projector suitable even for not as dark places and ensures high quality and vivid picture. High contrast ratio 10,000:1 ensures good readability even in places with ambient light. Optoma TX631 weighs only 4.9 lb.
User review: 

Display TechnologySingle 0.55” DC3 DMD DLP® Technology by Texas Instruments™
Native ResolutionXGA (1024 x 768)
Brightness3500 lumens
Contrast Ratio10000:1 (full on/full off)
Displayable Colors1.07 Billion
Lamp Life and Type6000/3500 Hours (ECO/normal) 240W P-VIP
Throw Ratio1.97 ~ 2.17
Projection Distance3.93’ to 32.8’ (1.2 to 10 m)
Image Size (Diagonal)30” ~ 300” (0.76 to 7.62 m)
Projection LensF= 2.51 ~ 2.69, f=21.95 ~ 24.18 mm, 1.1x manual zoom and focus
Remote ControlFully featured IR remote with mouse and laser pointer
Power Consumption300W max (bright), 230W (eco), <1W (standby)
Weight4.9 lb (2.2 kg)
Dimensions (W x H x D)11” x 3.08” x 9.06” (280 x 78.4 x 230 mm)

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Table information from http://www.optomausa.com/products/detail/TX631-3D