Volfoni R&D Patent applications |
Patent application number | Title | Published |
20160124238 | OPTICAL POLARISATION DEVICE FOR A STEREOSCOPIC IMAGE PROJECTOR - An optical polarization device for a stereoscopic image projector, including: a polarizer optical element including two beam splitter-polarizer plates, joined to one another; first and second optical reflectors configured to modify, respectively, a trajectory of first and second light beams reflected such that the reflected and transmitted light beams are projected to form one and same stereoscopic image; first, second, and third polarization modulators configured to selectively switch the optical polarization, respectively, of a transmitted light beam, of the first and of the second reflected light beams, between the first and second states of optical polarization; and a control circuit for the polarization modulators. | 05-05-2016 |
20140218648 | DEVICE FOR THE POLARIZATION OF A VIDEO SEQUENCE TO BE VIEWED IN STEREOSCOPY - A device for polarization of a video sequence to be stereoscopically viewed has a beam splitter, cells, mirrors, and a control circuit. The beam splitter receives an incident beam and separates it into two beams with perpendicular polarizations. It has four prisms, each with perpendicular faces. The first face of each prism has a phase-delaying plate, and the second face of each prism has a layer that reflects the first polarization and transmits the second. The prisms are arranged such that a first face of each prism is next to a second of an adjacent prism. The cells have variable polarization rotation and are crossed by the beams. Each mirror reflects a beam. The control circuit defines a polarization rotation of the cells such that the beams, after having crossed corresponding cells, have a common polarization that alternates between two perpendicular states. | 08-07-2014 |
20120200790 | LIQUID CRYSTAL LENSES HAVING ATTENUATED SWITCHING NOISE - The invention relates to liquid crystal lenses having dynamically switchable light transmission, including: a shutter ( | 08-09-2012 |