Abstract: A system for enhancing a facial expression includes a processing circuit is configured to receive video of a user, generate facial data corresponding to a face of the user, analyze the facial data to identify a facial expression, enhance the facial data based on the facial expression, and output modified video including the enhanced facial data.

Abstract: A display device includes a waveguide, a reconfigurable phase mask, and a controller. The controller dynamically reconfigures the reconfigurable phase mask so as to modulate display light in accordance with a detected position of an eye and/or a parameter for a shape of the waveguide. The waveguide transmits the modulated display light.

Abstract: A method of displaying visual information to different viewer-eyes includes receiving eye strength data indicative of a deficiency of a weak viewer-eye with respect to a dominant viewer-eye. The method further includes causing a 3D-display system to display a first perspective of an image to the weak viewer-eye and causing the 3D-display system to display a second perspective of the image to the dominant viewer-eye.

Abstract: A method for treating a weak viewer-eye includes the steps of receiving eye-strength data indicative of an eye-strength of the weak viewer-eye and causing a 3D display system to vary, in accordance with the eye-strength of the weak viewer-eye, display characteristics of a perspective that the 3D display system displays.

Abstract: A method of enhancing input imaging resolution includes sequentially blocking light from different portions of an object with a series of resolution-enhancing patterns displayed between the object and an image detector. The method further includes detecting light filtered by the series of resolution-enhancing patterns and integrating light detected while different resolution-enhancing patterns of the series of resolution-enhancing patterns are displayed between the object and the detector.

Abstract: A transmission optic having a transparent sheet with opposing front and back faces and an end face adjacent the front and back faces. The separation between the back face and a nearest point on the front face varies as a conic function of distance along the front face from that point to the end face.

Abstract: A display system produces three-dimensional images. The display system includes a waveguide, and a light source that injects light into the waveguide. A switchable grating allows individual positions in the grating in a two-dimensional array to be turned on and off. A controller configured to spatially modulate the switchable grating so as to control where light exits the waveguide. An eye tracking module tracks eye position of a viewer. The controller uses the eye position to control switching of the grating.

Abstract: This document describes various techniques for implementing a wide field-of-view projector. A wide field-of-view projector may include a spatial light modulator configured to inject light rays into an input wedge. The input wedge acts to output the light rays with an increased fan-out angle. In an embodiment, the spatial light modulator is controlled to inject light rays into the input wedge effective to project an image from the surface of an output wedge that is positioned proximate, and receives light rays with an increased fan-out angle from, the input wedge.

Abstract: Various embodiments related to determining a distance of an object from a surface of an interactive display device are disclosed herein. For example, one disclosed embodiment provides a method comprising, directing infrared (IR) light to the object above the surface which is reflected by the object back to the interactive display device, and refracting IR light reflected from the object into two rays travelling in different directions based on a polarization state of the reflected IR light. The method further comprises switching a polarization state of an LCD device to allow one of the two refracted rays to pass through the LCD device, and receiving, at a detector, the one of the two refracted ray that passes through the LCD device. Further, the method comprises estimating a distance of the object from the surface based on triangulation.

Abstract: A wide field-of-view virtual image projector includes a rod light guide that is embossed with at least a first diffraction grating and a second diffraction grating that is substantially parallel to the first diffraction grating. The first diffraction grating is configured to receive a first light ray, and to project first diffracted light rays from the rod light guide at a first range of angles. The second diffraction grating is configured to receive a second light ray, and to project second diffracted light rays from the rod light guide at a second range of angles. The virtual image projector further includes a slab light guide configured to receive the first diffracted light rays and the second diffracted light rays, and to diffract the first diffracted light rays and the second diffracted light rays out of the slab light guide to generate a virtual image with a wide field-of view.

Abstract: A virtual-image projector comprises a laser configured to form a narrow beam, first and second dilation optics, first and second redirection optics each having a diffraction grating, and a controller. The first dilation optic is arranged to receive the narrow beam and to project a one-dimensionally dilated beam into the second dilation optic. The second dilation optic is arranged to receive the one-dimensionally dilated beam and project a two-dimensionally dilated beam. The first and second redirection optics are each operatively coupled to a transducer. The first redirection optic is arranged to direct the narrow beam into the first dilation optic at a first entry angle. The second redirection optic is configured to direct the one-dimensionally dilated beam into the second dilation optic at a second entry angle. The controller is configured to bias the transducers to vary the first and second entry angles.

Abstract: Embodiments of a display device with a vision system are disclosed. In one example, a display device comprises a plurality of pixels for displaying light in a first polarization state, a plurality of photodetectors, where each photodetector in the plurality of photodetectors includes a polarization filter configured to transmit light in a second polarization state to the photodetector and reject light in other polarization states, a plurality of lenslets, where each lenslet in the plurality of lenslets focuses light in the second polarization state onto at least one photodetector in the plurality of photodetectors, a material surrounding the plurality of lenslets, where, for each lenslet in the plurality of lenslets, indices of refraction of the lenslet and the material are substantially equal for light in the first polarization state, and where indices of refraction of the lenslet and the material are different for light in the second polarization state.

Abstract: This document describes various apparatuses embodying, and techniques for implementing, a virtual image device. The virtual image device includes a projector and a lens configured to generate a virtual image as well as two diffraction gratings, substantially orthogonally-oriented to each other, that act to increase a field-of-view of the virtual image. The virtual image device can be implemented as a pair of eyeglasses and controlled to generate the virtual image in front of lenses of the eyeglasses so that a wearer of the eyeglasses, looking through the lenses of the eyeglasses, sees the virtual image.

Abstract: A light guide of the tapered-waveguide type includes an input slab for expanding a projected image between an input end and an output end; and a tapered output slab arranged to receive rays from the said output end of the input slab, and to emit them at a point on its face that corresponds to the angle at which the ray is received. The taper is calculated so that all rays injected into the input end undergo the same number of reflections before leaving the output face. The thickness of the input slab light guide is greater in the transverse direction away from the center line, so that light travelling at the critical angle from the input face of the slab waveguide towards the output waveguide bounces the same number of times in the input slab, regardless of its fan-out angle, in order to further reduce image distortion.

Abstract: A light guide device can provide a backlight for an LCD or a projection display. The light guide device includes a light-input end and an opposing end, opposing left and right sides which join the light-input end and the opposing end, and opposing front and back surfaces which join the light-input end and the opposing end. A birefringent film is provided on the opposing left and right sides of the light guide which switches a polarization of incident light. Incident light is provided at the light-input end having a right-handed circular polarization, in addition to light having a left-handed circular polarization. Light emitted from the front surface passes through a linear polarizer which selectively passes light to allow privacy of viewing by a user. The incident light can be provided at the light-input end using one or more cuboid rods, slab light guides, or discrete light sources.

Abstract: This document describes techniques and apparatuses for implementing a wide field-of-view virtual image projector. A wide field-of-view virtual image projector may include a spatial light modulator configured to inject light rays into an input wedge. The input wedge acts to output the light rays with an increased fan-out angle into an output light guide positioned proximate the input wedge. The spatial light modulator is controlled to inject light rays into the input wedge effective to diffract the light rays out of the output light guide to generate a virtual image.

Abstract: This document describes various techniques for implementing a wide field-of-view projector. A wide field-of-view projector may include a spatial light modulator configured to inject light rays into an input wedge. The input wedge acts to output the light rays with an increased fan-out angle. In an embodiment, the spatial light modulator is controlled to inject light rays into the input wedge effective to project an image from the surface of an output wedge that is positioned proximate, and receives light rays with an increased fan-out angle from, the input wedge.

Abstract: Various embodiments are disclosed that relate to scanning the direction of light emitted from optical collimators. For example, one disclosed embodiment provides a system for scanning collimated light, the system comprising an optical wedge, a light injection system, and a controller. The optical wedge comprises a thin end, a thick end opposite the thin end, a viewing surface extending at least partially between the thick end and the thin end, and a back surface opposite the viewing surface. The thick end of the optical wedge further comprises an end reflector comprising a faceted lens structure. The light injection system is configured to inject light into the thin end of the optical wedge, and the controller is configured to control the location along the thin end of the optical wedge at which the light injection system injects light.

Abstract: A transmission optic having a transparent sheet with opposing front and back faces and an end face adjacent the front and back faces. The separation between the back face and a nearest point on the front face varies as a conic function of distance along the front face from that point to the end face.

Abstract: Embodiments of optical collimators are disclosed. For example, one disclosed embodiment comprises an optical waveguide having a first end, a second end opposing the first end, a viewing surface extending at least partially between the first end and the second end, and a back surface opposing the viewing surface. The viewing surface comprises a first critical angle of internal reflection, and the back surface is configured to be reflective at the first critical angle of internal reflection. Further, a collimating end reflector comprising a faceted lens structure having a plurality of facets is disposed at the second end of the optical waveguide.