http://en.wikipedia.org/wiki/Display_device
Turning mechanism for projector
http://en.wikipedia.org/wiki/Digital_micromirror_device
http://en.wikipedia.org/wiki/Backlight
Angle adjusting of a display device
http://en.wikipedia.org/wiki/Memory_card
Backboard reflecting
Photographing management
Projection optical system
Optical engine
http://en.wikipedia.org/wiki/Projection_screen
http://en.wikipedia.org/wiki/Lens_(optics)
Radiating device
http://en.wikipedia.org/wiki/Thermal_management_of_electronic_devices_and_systems
Illuminating device
http://en.wikipedia.org/wiki/Digital_billboard
Light source brightness control
Light guide unit
Reflective sheet
