The invention provides a lens device of a projector for projecting light that has been modulated and emitted by a display device, wherein said lens device has an optical axis and is arranged telecentric to rays of light emitted from said display device, said lens device has a diaphragm mechanism having...http://www.google.fr/patents/US7163298?utm_source=gb-gplus-shareBrevet US7163298 - Lens device and projector having diaphragm mechanisms with substantially trapezoidal apertures
Lens device and projector having diaphragm mechanisms with substantially ...
