http://en.wikipedia.org/wiki/Projector
http://en.wikipedia.org/wiki/Backlight
Heat dissipator
http://en.wikipedia.org/wiki/Zoom_lens
Projection apparatus
Light mount
Projector assembly
Image display
Projector housing
Ventilator
Light source module
Illumination system
Detection system
Screen data processor
Display device control
Optical device adjustment
Adjusting apparatus
http://en.wikipedia.org/wiki/Optical_fiber
