Abstract: Disclosed embodiments include a replicator arranged to receive spatially modulated light and replicate the spatially modulated light to form a plurality of replicas of the spatially modulated light by waveguiding between a reflective surface and a transmissive-reflective surface. The transmissive-reflective surface forms an output surface for the plurality of replicas of the spatially modulated light. Some embodiments additionally include a light control device (i) located in an optical path of the plurality of replicas of the spatially modulated light downstream from the output surface of the replicator, and (ii) arranged to provide a first angular turn to the replicas of the spatially modulated light. The first angular turn is caused by refractive power and has a primary component on a plane. Some embodiments also include a diffractive optical element arranged to provide a second angular turn to the spatially modulated light or the replicas thereof.

Abstract: A device for processing a holographic wavefront, the device includes a holographic wavefront splitter having an input side arranged to receive a holographic wavefront on a first plane and divide the holographic wavefront into first and second portions. The input side includes a first reflector arranged to direct the first portion away from the first plane in a first direction, a second reflector arranged to direct the second portion away from the first plane in a second direction, and a discontinuity between the first reflector and second reflector. The discontinuity is arranged to receive and nullify a third portion of the holographic wavefront. The first and second reflectors are arranged to direct the first and second portions to an input side of a holographic wavefront recombiner. The holographic wavefront recombiner is arranged such that the first and second portions are recombined at an output side of the holographic wavefront recombiner.

Abstract: A light shuttering device comprises a plurality of liquid crystal cells, wherein each liquid crystal cell is operable in a first optical state or a second optical state in response to a respective first or second drive signal. A drive circuit comprises a plurality of switches and a drive controller. Each switch is arranged to output the respective first or second drive signal to a respective liquid crystal cell. The drive controller is arranged to sequentially update the output of each switch during an update cycle. The drive circuit is arranged to determine the order in which the switches are sequentially updated during an update cycle based on any changes to the respective drive signals that will be made during the update.

Abstract: A foldable display includes: a flexible display panel including: an impact absorbing layer including a metal film; and a display layer provided on a surface of the impact absorbing layer; a first region, a second region, and a third region that are included in a region of the flexible display panel, the third region being positioned between the first region and the second region; a first support substrate that is inflexible, the first support substrate supporting the first region from toward the impact absorbing layer; a second support substrate that is inflexible, the second support substrate supporting the second region from toward the impact absorbing layer; a folding mechanism connected to the first support substrate and the second support substrate, and overlapping with the third region in plan view; and a slit provided to the metal film at least in a first position at a shortest distance, from the third region, shorter than a shortest distance from an end portion of the first region across from the thir

Abstract: A holographic projector comprising a display device, a laser diode chip and at least one optic. The display device is arranged to display a hologram of a picture. The laser diode chip comprising a plurality of emitters. Each emitter is arranged to form a respective beamlet. The beamlets are incoherent with each other such that they form different speckle patterns. The at least one optic is arranged to receive the plurality of beamlets and form a continuous beam in which beamlets of the plurality of beamlets at least partially overlap. The holographic projector is arranged to illuminate the hologram with the continuous beam and form a holographic reconstruction of the picture. The speckle patterns of the beamlets reduce noise in the holographic reconstruction through addition of intensity rather than amplitude and phase.

Abstract: A holographic projector includes a display device arranged to form a holographic wavefront by spatially modulating light in accordance with a hologram of a picture. The holographic projector includes a magnification system including a first and second lens. The first lens is arranged form a holographic reconstruction of the picture by focusing the holographic wavefront towards a front focal plane of the first lens. The holographic reconstruction of the picture includes a plurality of pixels. The holographic projector includes a kinoform disposed between the first and second lens and arranged to apply a phase-delay to each pixel of the holographic reconstruction. The holographic projector includes a movement assembly arranged to move the kinoform such that a plurality of different phase-delays are applied to each pixel. The kinoform includes an array of zones and is arranged such that the width of each zone is substantially equal to the distance between adjacent pixels.

Abstract: A device for processing a holographic wavefront, the device includes a holographic wavefront splitter having an input side arranged to receive a holographic wavefront on a first plane and divide the holographic wavefront into first and second portions. The input side includes a first reflector arranged to direct the first portion away from the first plane in a first direction, a second reflector arranged to direct the second portion away from the first plane in a second direction, and a discontinuity between the first reflector and second reflector. The discontinuity is arranged to receive and nullify a third portion of the holographic wavefront. The first and second reflectors are arranged to direct the first and second portions to an input side of a holographic wavefront recombiner. The holographic wavefront recombiner is arranged such that the first and second portions are recombined at an output side of the holographic wavefront recombiner.

Abstract: A method is provided of manufacturing a waveguide comprising an input port, an output port, a transparent medium having a first refractive index (n1), a first pair of opposing surfaces and a second pair of opposing surfaces. The method comprises polishing at least one surface of the second pair of opposing surfaces to achieve a separation therebetween, bonding a protective layer to at least one polished surface of the second pair of opposing surfaces; and polishing at least one surface of the first pair of opposing surfaces to achieve a separation therebetween.

Abstract: A foldable display includes: a flexible display panel including: an impact absorbing layer including a metal film; and a display layer provided on a surface of the impact absorbing layer; a first region, a second region, and a third region that are included in a region of the flexible display panel, the third region being positioned between the first region and the second region; a first support substrate that is inflexible, the first support substrate supporting the first region from toward the impact absorbing layer; a second support substrate that is inflexible, the second support substrate supporting the second region from toward the impact absorbing layer; a folding mechanism connected to the first support substrate and the second support substrate, and overlapping with the third region in plan view; and a slit provided to the metal film at least in a first position at a shortest distance, from the third region, shorter than a shortest distance from an end portion of the first region across from the thir

Abstract: A light shuttering device comprises a plurality of liquid crystal cells, wherein each liquid crystal cell is operable in a first optical state or a second optical state in response to a respective first or second drive signal. A drive circuit comprises a plurality of switches and a drive controller. Each switch is arranged to output the respective first or second drive signal to a respective liquid crystal cell. The drive controller is arranged to sequentially update the output of each switch during an update cycle. The drive circuit is arranged to determine the order in which the switches are sequentially updated during an update cycle based on any changes to the respective drive signals that will be made during the update.

Abstract: A laser device is disclosed that provides at least an ultraviolet laser beam and preferably both an ultraviolet laser beam and a visible laser beam. The laser device includes a semiconductor laser device (e.g. a laser diode) to generate visible laser light which is coupled into a frequency doubling crystal taking the form of a single crystal thin film frequency-doubling waveguide structure. The single crystal thin film frequency-doubling waveguide converts a portion of the visible light emitted by the laser diode into ultraviolet light. Both visible and ultraviolet laser light is emitted from the waveguide. As an example, the single crystal thin film frequency-doubling frequency doubling waveguide includes a frequency doubling crystal region composed of ?-BaB2O4 (?-BBO), a cladding region composed of materials that are transparent or nearly transparent at the wavelength of the ultraviolet laser light beam and a supporting substrate composed of any material.

Abstract: A laser device is disclosed that provides at least an ultraviolet laser beam and preferably both an ultraviolet laser beam and a visible laser beam. The laser device includes a semiconductor laser device (e.g. a laser diode) to generate visible laser light which is coupled into a frequency doubling crystal taking the form of a single crystal thin film frequency-doubling waveguide structure. The single crystal thin film frequency-doubling waveguide converts a portion of the visible light emitted by the laser diode into ultraviolet light. Both visible and ultraviolet laser light is emitted from the waveguide. As an example, the single crystal thin film frequency-doubling frequency doubling waveguide includes a frequency doubling crystal region composed of ?-BaB2O4 (?-BBO), a cladding region composed of materials that are transparent or nearly transparent at the wavelength of the ultraviolet laser light beam and a supporting substrate composed of any material.