Lamp and lens retrofit assembly for overhead projector
Laser beam focusing arrangement and method
Lens cover set
Lens focusing means for slide projectors
Lens shift mechanism and projection type video display
Lens shift mechanism and projection type video display
Lens shifting apparatus
Lens-shifting device
Liquid crystal display projector
Liquid crystal display projector with a lens shading device...
Liquid crystal projector
Liquid crystal projector
Locking device for a projector component