Abstract: Provided is a waveguide arrangement, comprising a diffractive input coupling element (11), in particular a volume hologram, a diffractive output coupling element (13), in particular a volume hologram, and optionally a beam expansion element (12), in particular a volume hologram. The expansion element (12) and the output coupling element (13) expand a light beam in different directions.

Abstract: A head-up display comprises an image-generating unit which is protected from damage caused by incident light from the outside, a corresponding mirror element, and a method for the manufacture of the head-up display. The head-up display comprises an image-generating unit, a deflection unit and a mirror unit. The deflection unit comprises a mirror element that comprises a spectrally partially reflecting layer, disposed on a substrate, on which an absorptive polarization layer is disposed.

Abstract: A nighttime hand signal system, having primarily a glove or fingerless glove having a backside, one or more infrared (IR) reflective material patterns affixed to the backside of the glove, an infrared (IR) light source, a night vision optical viewer, and thus functions to have the glove used by forward personnel in a police or military unit to provide a variety of hand signal communications to rear personnel using night vision optical viewer, as well as identify friend verse enemy personnel.

Abstract: The present invention provides a light-guiding plate which is applicable to incident rays over a wide ray angular range and wide wavelength rage, and is able to suppress a decrease in optical efficiency. A light-guiding plate 200 having a light diffracting portion 1200 for diffracting incident light by a multiple-recorded hologram is configured such that, in the light diffracting portion, when light 1210 of a single wavelength having a certain angular range is incident, at least two or more outgoing rays 1220 are discretely emitted with a first angular space ?s, and the emitted rays each have a second angular range ?a, and the first angular space ?s is equal to or larger than the second angular range ?a.

Abstract: Headsets and head-mounted displays including first and second diffractive elements are described. In some cases, the first and second diffractive elements include first and second grating surfaces, and for at least one wavelength, the first and second grating surfaces have at least one different corresponding diffractive property. The head-mounted display may include two-dimensionally pixelated adjacent first and second display surfaces for displaying images, and first and second diffractive elements disposed adjacent the respective first and second display surfaces. In some cases, the first diffractive element is configured to diffract a first wavelength ?1, but not a different second wavelength ?2, into zero and first diffraction orders having intensities within 5% of each other, and the second diffractive element is configured to diffract the second wavelength ?2, but not the first wavelength ?1, into zero and first diffraction orders having intensities within 5% of each other.

Abstract: An optical device comprising may include a light turning element. The optical device can include a first surface that is parallel to a horizontal axis and a second surface opposite to the first surface. The optical device may include a light module that includes a plurality of light emitters. The light module can be configured to combine light for the plurality of emitters. The optical device can further include a light input surface that is between the first and the second surfaces and is disposed with respect to the light module to receive light emitted from the plurality of emitters. The optical device may include an end reflector that is disposed on a side opposite the light input surface. The light coupled into the light turning element may be reflected by the end reflector and/or reflected from the second surface towards the first surface.

Abstract: A see-through display device includes an optical coupler that couples first light input from a first direction and second light input from a second direction that is different from the first direction, the optical coupler transferring coupled light including the first light and the second light to an observer, and a shading member disposed in front of the optical coupler, the shading member transferring the second light to the optical coupler by reducing a light amount of the second light. The see-through display device limits a reflection phenomenon occurring between the optical coupler and the shading member.

Abstract: A head mounted display (HMD) includes a field curvature corrected (FC) display to mitigate field curvature in an image that is output to a user's eyes. The FC display includes elements that generate the image light and elements to mitigate field curvature from the image light. The FC display may include a display panel with lenses, a display panel with a reflective polarizer and reflective surface, or other optical elements. The FC display may include a pancake lens configuration including a polarized display with a quarter wave plate, a reflective mirror, and a polarization reflective mirror.

Abstract: A stacked waveguide assembly can have multiple waveguide stacks. Each waveguide stack can include a plurality of waveguides, where a first waveguide stack may be associated with a first subcolor of each of three different colors, and a second waveguide stack may be associated with a second subcolor of each of the three different colors. For example, the first stack of waveguides can incouple blue, green, and red light at 440 nm, 520 nm, and 650 nm, respectively. The second stack of waveguides can incouple blue, green, and red light at 450 nm, 530 nm, and 660 nm, respectively.

Abstract: A method performed by an augmented reality (AR) system includes receiving a command that is input by the user through the AR system. The augmented reality (AR) system includes a hardware processor and an AR display configured to present virtual content in an environment of a user. The command specifies a type of virtual object to be presented in the environment. In response to the command, virtual objects of the specified type are presented in the environment, and a presentation of at least one of the virtual objects is altered in response to detecting a movement of the user in proximity to the at least one virtual object.

Abstract: An optical apparatus for a near-eye display includes a microdisplay to emit image light and one or more field lenses positioned to receive the image light from the microdisplay. The one or more field lenses have a combined optical power to form a curved intermediate image. A freeform combiner, having an eyeward side and an external side, is positioned to receive the image light from the one or more field lenses and reflect the image light. A curved intermediate image is formed between the freeform combiner and the one or more field lenses.

Abstract: An optical apparatus into which light emitted from an image forming apparatus enters, in which the light is guided, and from which the light is emitted includes a light guide plate 30, first deflection means 41, second deflection means 42, and third deflection means 43. The first deflection means 41 deflects light incident on the light guide plate 30 in such a manner that the light is totally reflected in the light guide plate 30. The second deflection means 42 deflects the light that has propagated in the light guide plate 30 by total reflection in such a manner as to cause the light to be emitted from the light guide plate 30. The third deflection means 43 deflects the light that has been deflected by the first deflection means 41 and that has propagated in the light guide plate 30 by total reflection toward the second deflection means 42.

Abstract: A projection augmented reality headset (ARHS), providing a wide field of view and an optimized eye relief. THE ARHS includes a projection having an imager and imaging optics which provides image light to a partially reflecting combiner. Further, the partially reflecting combiner configured to receive the image light, and is configured to re-direct the image light towards an eye box, with an eye relief offset between the partially reflecting combiner and the eyebox. As such, the imaging optics include a combination of lens elements having symmetrical or free-form lens surfaces that are tilted and decentered to expand a field of view.

Abstract: A small information display apparatus capable of displaying video information on a windshield as a virtual image is provided. An information display apparatus configured to display video information of a virtual image on a windshield of a conveyance includes: a liquid crystal panel arranged as a video display apparatus configured to form the video information; and a virtual image optical system provided with a windshield for displaying the virtual image at a front of the conveyance by reflecting video of the liquid crystal panel by means of the windshield. The virtual image optical system is configured by arranging a concave mirror and an optical element between the concave mirror and the video display apparatus.

Abstract: An object of the present invention is to provide a compact head-up display device. The head-up display device of the present invention includes an image forming unit that emits image light containing image information, and an eyepiece optical system that displays a virtual image by reflecting the image light, in which the eyepiece optical system includes a concave lens, a free curved surface lens, and a free curved surface concave mirror disposed in order from the image forming unit side along the emission direction of the image light.

Abstract: A first waveguide of the HUD includes a first input coupler and a first output coupler. The first input coupler is configured to receive first light in a first bandwidth and provide the first light to the first output coupler. The first output coupler is configured to provide the first light in a first field of view. The first input coupler is configured to receive second light in a second bandwidth and provide the second light to the first output coupler. A second waveguide of the HUD includes a second input coupler and a second output coupler. The second input coupler is configured to receive third light in the first bandwidth and provide the third light to the second output coupler. The second output coupler is configured to provide the third light in the second field of view.

Abstract: Examples are disclosed that relate to a display device. One example provides a display device comprising a projector and a pre-expander optic configured to replicate an exit pupil of the projector in at least a first direction, the pre-expander optic comprising a plurality of spectrally-selective pupil-replicating elements to form at least two exit pupils at different spatial locations, each exit pupil being for a different spectral band. The display device further comprises a waveguide comprising at least two incoupling pupils, each incoupling pupil configured to receive light from a corresponding exit pupil of the pre-expander optic, and the waveguide configured to replicate each corresponding exit pupil in at least a second direction and output the light received toward an eyebox.

Abstract: This head-mounted display is provided with, closer to the viewing side than a color filter having a black matrix between pixels in a liquid crystal display panel (160), an anisotropic optical film (150), the linear transmittance of which changes according to the angle of incident light, wherein the anisotropic optical film (150) includes a single-layered or multilayered anisotropic light diffusion layer, on at least on one surface of the anisotropic light diffusion layer, surface asperities having an arithmetic average roughness Ra of 0.10 ?m or less, which is measured in accordance with JIS B0601-2001, are formed, the anisotropic light diffusion layer has a matrix region and a plurality of pillar regions having a refractive index different from that of the matrix region, and the visibility of the black matrix is lowered by the anisotropic optical film (150), thereby making it possible to obtain a higher sense of immersion without feeling coloring.

Abstract: Used are an imaging apparatus for a device for data projection and an optical component and a corresponding device for data projection. The imaging apparatus here comprises a plurality of light-emitting elements (10), arranged in a first direction, and a deflection apparatus (11) for deflecting light beams in a second direction. The optical component can comprise a windshield which is provided with holograms.

Abstract: Viewing systems are provided which include a screen and an optical collimation device including two holographic optical elements working by reflection, the first holographic optical element being closer to the screen, the second holographic optical element being closer to an observer. In the system, the screen displays a first object at a first wavelength and a second object at a second wavelength. Each holographic optical element includes two holographic treatments, each treatment being able to reflect one of the two wavelengths and to transmit the other wavelength. The first holographic element and the second holographic element are arranged such that the image of the first object forms at a first distance from the screen and that the image of the second object forms at a second distance from the screen, different from the first distance.

Abstract: There is described a display apparatus for producing an aerial image of an object. The display apparatus comprises a display acting as the object to be imaged. A first beam splitter or reflective polarizer receives light from the display and redirects at least a portion of the light to one or two retroreflectors. Lens arrays can be added onto the retroreflector(s) to reduce blur. A second beam splitter or reflective polarizer receives the light from the retroreflector(s) and produces the aerial image. The second beam splitter or reflective polarizer is aligned with a point of view of the viewer, thus defining a horizon of the field of view. An opaque surface extends below the horizon, and the first beam splitter or reflective polarizer, the first retroreflective sheeting and the display are located under the surface and therefore below the horizon, thus keeping the over-the-head space free of equipment.

Abstract: A head-up display apparatus reduces the trouble caused by horizontal separation of a display image. The head-up display apparatus (1) includes a display source (2) inside an instrument panel (6), an opening (7) on the instrument panel (6), display light from the display source (2) being emitted through the opening (7), and an opening cover (5) provided around the opening (7). At horizontal ends (51, 53) of the opening cover (5), a change in color or reflectance is provided from the opening sides (52a, 54a) towards the outer sides (52b, 54b).

Abstract: A head-up display has an image generator, an optical system, a transmissive screen and a transparency mask. The transparency mask is arranged close to a display of the image generator. A mask pixel map is applied to the processed image to get a masked image.

Abstract: Calibrating a virtual image projected from a vehicle HUD system onto a windshield includes displaying a fiducial at a predetermined location upon the windshield, projecting a test image from a test image generator within the HUD system, aligning the test image with the fiducial, determining a positional deviation from a test image calibrated position required to align the test image with the fiducial, and based upon the positional deviation and a known positional relationship between a virtual image calibrated position and the test image calibrated position, aligning the virtual image with the fiducial.

Abstract: Apparatuses and systems including curved optical waveguides, and methods for use include an output-grating of a curved waveguide that includes a spatially modulated grating period configured to cause, for each beam of light corresponding to an image coupled into a bulk-substrate of the curved waveguide by an input-grating, corresponding rays of light output from different locations of the output-grating to be substantially collimated. Adaptive optics of a display engine compensate for aberrations that vary over a field-of-view associated with light corresponding to the image out-coupled by the output-grating. Further, a curved portion of the curved waveguide is designed to keep internally reflected light below a critical angle to prevent inadvertent out-coupling thereof. Further, curved surfaces of the curved waveguide can include polynomial surfaces to compensate for lateral color errors and distortion.

Abstract: A system for near-eye display applications. A lens is provided with a beam-splitting interface horizontally along the width of the lens. Two display devices per lens are provided and disposed on the perimeter surface of the lens opposing an overlapped, prismatic facet optics assembly which balances aberration introduced by the slight symmetry break in the lens.

Abstract: The present invention provides a head-up display apparatus capable of both long-distance display and short-distance display. A functional film 51 is mounted on a glare trap part 50 of a head-up display apparatus 1. In order to display a first virtual image 9a, a first image display device 30a projects a first image onto a windshield 3 via the glare trap part. In order to display a second virtual image 9b having a different display distance, a second image display device 30b generates a second image on the functional film and projects the second image onto the windshield. For the functional film 51, a variable transmittance film having a light transmittance that varies according to the applied voltage or a transparent self-luminous film in which an irradiated portion emits light when irradiated with a laser beam of a specific wavelength is used.

Abstract: A head-worn see-through display includes a display panel adapted to generate image content light, a combiner adapted to reflect the image content light towards an eye of a user, wherein the combiner transmits scene light from a surrounding environment to the eye of the user, and an image expansion optic intermediate the display panel and the combiner. The image expansion optic includes a flat partially reflective and partially reflective surface (the “flat surface”), a curved partially reflective and partially reflective surface (the “curved surface”), and the flat surface adapted to reflect the image content light towards the curved surface and the curved surface adapted to reflect the image light back towards the flat surface, wherein the image light transmits through the flat surface towards the combiner.

Abstract: A metamaterial optical filter including: a transparent substrate; and a photosensitive polymer layer provided to the transparent substrate, wherein the photosensitive polymer layer is treated using a laser to form a non-conformal holographically patterned subwavelength grating, the holographic grating configured to block a predetermined wavelength of electromagnetic radiation. A system and method for manufacturing holographically patterned subwavelength grating onto the photosensitive polymer layer including: applying a photosensitive polymer layer to a transparent substrate; placing the photosensitive polymer layer between a laser and a mirror; scanning the laser over the photosensitive polymer layer such that a holographic grating is created within the photosensitive polymer layer by interaction between the laser light and light reflected from the mirror; and stacking two or more holographically patterned subwavelength grating layers to form complex metamaterial optical filter stacks.

Abstract: Optical display systems and methods for providing three-dimensional and two-dimensional convergence corrected images to a user are described. The optical display systems may include at least two image generators producing a plurality of rays forming a plurality of images. A diffraction enhanced imaging system may be configured to collect the rays produced and control convergence angle of each ray at specific wavelengths into an optical waveguide. An in-coupling diffraction system may couple the rays into the optical waveguide. A wavelength compensated beam expander may expand horizontal extension of the images and an output coupling and vertical expansion system may magnify the images in a vertical direction and direct light towards a user at specific angles creating a wide field of view.

Abstract: The disclosure provides for a display apparatus for a vehicle for displaying images captured by at least one image sensor to a driver of the vehicle. The display apparatus includes a display projector configured to project images derived from the image data, a display screen for displaying images projected thereon by the display projector, and a reflector positioned to reflect the images from the display screen towards a viewing direction. According to one embodiment, the display apparatus further includes an adjustment mechanism for adjusting the display projector relative to the vehicle. According to another embodiment, the display apparatus further includes a frame assembly on which the display projector, the display screen, and the reflector are mounted, the frame assembly is mounted to the vehicle such that the frame assembly may be moved relative to the vehicle to adjust the positions of the display projector, the display screen, and the reflector.

Abstract: Provided are an image display apparatus and an image display element that are capable of achieving excellent visual effects. The image display apparatus of the present invention includes a first transparent member, a second transparent member, and an emission section. The first transparent member includes a diffusion surface for diffusing light incident on respective points. The second transparent includes a control surface and is integrated with the first transparent member, the control surface being disposed in a manner that the control surface faces the diffusion surface, controlling propagation directions of light diffused at the respective points on the diffusion surface, and forming a virtual image of the diffusion surface. The emission section emits image light to the diffusion surface.

Abstract: A head-up display and a three-dimensional (3D) head-up display system provide a plurality of different views of an image combined with a view of a physical environment to an eye box as a combined image to be viewed by a user. The head-up display includes a multibeam diffraction grating-based display configured to provide the different views and an optical combiner configured to relay the different views to the eye box along with the physical environment view. The different views provided by the 3D head-up display system represent different perspective views of a 3D image.

Abstract: A display device includes a first diffraction element that deflects image light and causes the image light to be incident on an eye of an observer, and a second diffraction element disposed between an image light projecting device and the first diffraction element. A diffraction direction of the first diffraction element and the second diffraction element is set depending on whether a sum of the number of reflections of light and the number of times of generating intermediate image between the second diffraction element and the first diffraction element is an even number or an odd number. For example, when the sum is an even number, a direction in which light incident on a first incident surface is diffracted at the highest diffraction efficiency is the same direction as a direction in which light incident on a second incident surface is diffracted at the highest diffraction efficiency.

Abstract: A vehicle may have a head-up display that produces a display output allowing a viewer in the vehicle to observe two-dimensional or three-dimensional content. The head-up display may include a display unit that produces the display output and an optical combiner on a vehicle window that directs the display output towards the viewer. The optical combiner may be a holographic or diffractive optical element or may be an array of angled reflectors such as micromirrors embedded in an index-matching material. Optical combiners formed from holographic elements may be configured to reflect light at an angle of reflection that is different than the angle of incidence, thereby allowing light to reach a viewer's eyes even when the head-up display reflects light off of a side window on a vehicle door. A holographic optical element may include volume holographic media such as photopolymers or holographic polymer dispersed liquid crystal.

Abstract: A near-eye display device includes an image output module, a coded-aperture module, and a light-guiding component. The image output module is configured to provide at least one image. The coded-aperture module is configured to encode the lights of the at least one image emitted from the image output module, so as to generate at least one left-eye image and at least one right-eye image. The light-guiding component is configured to send the left-eye image and the right-eye image to different directions respectively.

Abstract: An eye-tracking system includes a holographic illuminator and a detector. The holographic illuminator includes a light source configured to provide light and a holographic medium optically coupled with the light source. The holographic medium is configured to receive the light provided from the light source and concurrently project a plurality of separate light patterns toward an eye. The detector is configured to detect a reflection of at least a subset of the plurality of separate light patterns, reflected off the eye, for determining a location of a pupil of the eye. Also disclosed is a method for determining a location of a pupil of an eye with the eye-tracking system that includes the holographic illuminator.

Abstract: Provided are a backlight unit and a holographic display apparatus including the same. The backlight unit includes a light guide plate; an input coupler configured to guide light into the light guide plate; a light deflector configured to deflect light emitted from the input coupler and guide the deflected light to propagate within the light guide plate. The light deflector is disposed on a region of the light guide plate which does not overlap with an optical path of light incident on the input coupler. The backlight unit also includes an output coupler configured to emit the light, having been propagated within the light guide plate, to an outside of the light guide plate.

Abstract: A near eye display (NED) system is configured to present an augmented reality environment to the user. In addition, the NED system uses an imaging device to detect individuals within a local area, and identify positions of hands of the individuals from which the NED system may be able to detect one or more performed gestures. In response to detecting a predetermined gesture, the NED system displays a user of the NED one or more virtual objects corresponding to the identified first gesture at a location associated with a predetermined portion of the individual's body. The displayed virtual objects may be referred to as “visual flair,” and are used to accentuate, stylize, or provide emphasis to gestures performed by individuals within the local area.

Abstract: A virtual-image forming device includes a device body having an opening; a real-image forming unit disposed within the device body to output light; a mirror to reflect the light output from the real-image forming unit; and an optical element. The optical element has positive power to refract the light reflected by the mirror and let the light exit through the opening to form of the light on a transmission and reflection member.

Abstract: A display may have an array of pixels. Each pixel may have a light-emitting diode such as an organic light-emitting diode or may be formed from other pixel structures such as liquid crystal display pixel structures. The pixels may emit light such as red, green, and blue light. An angle-of-view adjustment layer may overlap the array of pixels. During operation, light from the pixels passes through the angle-of-view adjustment layer to a user. The viewing angle for the user is enhanced as the angular spread of the emitted light from the pixels is enhanced by the angle-of-view adjustment layer. The angle-of-view adjustment layer may be formed from holographic structures recorded by applying laser beams to a photosensitive layer or may be formed from a metasurface that is created by patterning nanostructures on the display using printing, photolithography, or other patterning techniques.

Abstract: A projection apparatus for data eyeglasses. The projection apparatus encompasses at least one light source for emitting a light beam; and at least one holographic element, disposed or disposable on an eyeglass lens of the data eyeglasses, for projecting an image onto a retina of a user of the data eyeglasses by deflecting and/or focusing the light beam onto a eye lens of the user.

Abstract: An optical device includes a light guide plate configured to guide light within a plane parallel to an emission surface, and a plurality of deflectors configured to deflect light guided thereto by the light guide plate, causing light forming an image in a space outside the light guide plate to exit from the emission surface. Each deflector in the plurality of deflectors cause the light to exit from the emission surface toward a direction substantially converging onto a single convergence point or convergence line in the space, or to substantially radiate from a single convergence point or convergence line in the space. The convergence point or the convergence line is mutually different among the plurality of deflectors with a grouping of a plurality of the convergence points or the convergence lines forming the image in the space.

Abstract: Aspects of the present invention relate to suppression of stray light in head worn computing.

Abstract: A display system includes a light pipe including elongated surfaces. The light pipe is configured to expand the image in a first direction through one of the elongated surfaces. The display also includes a waveguide including an output grating, a first surface, a second surface, and a side surface. The first surface and the second surface have a larger area than the side surface, the output grating being configured to provide the image expanded in a second direction. The second direction is different than the first direction. The image enters the waveguide from the one of the elongated surfaces.

Abstract: A near-eye display system includes a display panel to display a lightfield image comprising an array of elemental images and a lenslet array facing the display panel, the lenslet array comprising lenslets with spatially-varying prescriptions, such as different diameters, different focal lengths, and different asphere terms. The lenslet array further may be formed with a planar or non-planar substrate. The system further may include a distortion map comprising a set of transform matrices, each transform matrix configured to pre-distort a corresponding elemental image of a lightfield image so as to compensate for distortion expected to be introduced by a corresponding lenslet of the lenslet array, as well as a rendering component configured to modify the array of elemental images of a rendered lightfield using the distortion map to generate a modified lightfield image, and provide the modified lightfield image for display at the display panel for viewing via the lenslet array.

Abstract: A method for generating video holograms in real time for a holographic playback device comprising at least one light modulator means, into which a scene divided into object points is encoded as an entire hologram and can be seen as a reconstruction from a visibility region, which is located within a periodicity interval of the reconstruction of the video hologram, the visibility region defining a subhologram together with each object point of the scene to be reconstructed, and the entire hologram being generated from a superposition of contributions of subholograms, is characterized in that for each object point the contributions of the subholograms in the entire reconstruction of the scene can be determined from at least one look-up table.

Abstract: A mobile device is provided which is capable of displaying a hologram. The mobile device includes a main body including a screen; a light guide member disposed above the screen; an entrance optical member disposed on a surface of the light guide member; and an image hologram disposed on a surface of the light guide member and laterally spaced apart from the entrance optical member. When an area of the screen corresponding to the entrance optical member emits a light, a holographic image stored in the image hologram is displayed above the light guide member.

Abstract: In an optical display system that includes a waveguide with multiple diffractive optical elements (DOEs), gratings in one or more of the DOEs may have an asymmetric profile in which gratings may be slanted or blazed. Asymmetric gratings in a DOE can provide increased display uniformity in the optical display system by reducing the “banding” resulting from optical interference that is manifested as dark stripes in the display. Banding may be more pronounced when polymeric materials are used in volume production of the DOEs to minimize system weight, but which have less optimal optical properties compared with other materials such as glass. The asymmetric gratings can further enable the optical system to be more tolerant to variations—such as variations in thickness, surface roughness, and grating geometry—that may not be readily controlled during manufacturing particularly since such variations are in the submicron range.

Abstract: A display device for a vehicle including: a first display configured to output first light forming first visual information; a second display configured to output second light forming second visual information; a light synthesizing unit located on an advancing path of each of the first light and the second light and forming a first acute angle with the first display and a second acute angle with the second display and configured to transmit therethrough the first light from the first display and reflect the second light from the second display; a first tiltable reflector; a second tiltable reflector; and a driving unit configured to: tilt the first tiltable reflector to form a first angle with the second display so the first tiltable reflector reflects part of the second light directed toward the light synthesizing unit toward a first direction, and tilt the second tiltable reflector to form a second angle with the first display so the second tiltable reflector reflects part of the first light directed toward