Rear projection television
Exhausting structure
Optical projection
http://en.wikipedia.org/wiki/Projector
Rear projection display
Cooling adjustment
Intake structure
Cooling structure
Brightness management
Dust-proof device
Fastening structure
Adjusting apparatus
Stray light elimination
http://en.wikipedia.org/wiki/Color_temperature
http://en.wikipedia.org/wiki/Zoom_lens
Heat dissipation
Debris collection
Adjusting structure
