Backlight button
Rear projection display
Elevating module
Lighting apparatus
Illumination system
http://en.wikipedia.org/wiki/Lamp
Sliding lens cap
Projection system
Elevating mechanism
Heat dissipator
Control circuit
Lens assembly
Illumination assembly
http://en.wikipedia.org/wiki/Backlight
http://en.wikipedia.org/wiki/Lens_(optics)
Optical projection
Seat assembly
Fixing structure
Elevating device
