Apparatus based on pulsing for projection of a stereo or multichannel image

An apparatus for projecting a moving or still image comprising at least two channels, said apparatus comprising at least a first and at least a second video projector, for projecting images intended for the left and the right eye of a viewer alternately in time and in synchronization with the function of shutter glasses worn by the viewer, wherein video projectors are liquid crystal video projectors in which liquid crystal video projectors the illuminating and thereby image-projecting light source of a liquid crystal matrix is a light source that produces light in a pulsed manner, the pulsing of said light source being arranged to occur in synchronization with the presentation of images in such a manner that

• when the right-eye shutter of the shutter glasses worn by the viewer is open, the light power of the light source of at least the second projector projecting the image intended for the left eye is turned off and the light power of the light source of at least the first projector projecting the image intended for the right eye is turned on in a pulsed manner, and correspondingly
• when the left-eye shutter of the shutter glasses worn by the viewer is open, the light power of the light source of at least the first projector projecting the image intended for the right eye is turned off and the light power of the light source of at least the second projector projecting the image intended for the left eye is turned on in a pulsed manner.