en.wikipedia.org/wiki/Backlight
Drive mechanism
Rotating lighting device/heat dissipation
Light source module
Adjusting mechanism for projector
Surface light source device
Lifting module
Projector shell
http://en.wikipedia.org/wiki/Projector
Remote control of electronic device
http://en.wikipedia.org/wiki/Power_supply
http://en.wikipedia.org/wiki/Backlight
http://en.wikipedia.org/wiki/Zoom_lens
Light shading module for projector
http://en.wikipedia.org/wiki/Color_wheel_(optics)
http://en.wikipedia.org/wiki/Light-emitting_diode
Backlight/LCD
http://en.wikipedia.org/wiki/Glasses
Illumination device
Cooling in projection system
