Optics: image projectors – Stereoscopic
Reexamination Certificate
2006-10-03
2006-10-03
Mahoney, Christopher (Department: 2851)
Optics: image projectors
Stereoscopic
C359S464000, C348S056000
Reexamination Certificate
active
07114809
ABSTRACT:
An apparatus for projecting a moving or still stereo or multichannel image. At least a first and at least a second video projector, or the like, project images intended for the left and the right eye of a viewer alternately in time and in synchronization with the function of shutter glasses or the like worn by the viewer. The video projectors are provided with a shutter/several shutters to prevent the projection of an image, if necessary. The control of the shutter is arranged in synchronization with the showing of the images in the following manner. When the right-eye shutter of the shutter glasses or the like worn by the viewer is open, the shutter in connection with at least the second projector projecting the image intended for the left eye is/are controlled to be shut. Correspondingly, when the left-eye shutter of the shutter glasses or the like worn by the viewer is open, the shutter in connection with at least the first projector projecting the image intended for the right eye is/are controlled to be shut. The invention enables the projection of a high-quality stereo image by means of affordable video projectors, for example liquid crystal video projectors functioning at the normal image frequency.
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Franklin Eric J.
Mahoney Christopher
Venable LLP
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