Abstract: Bright ambient light can wash out a virtual image in a conventional augmented reality device. Fortunately, this problem can be prevented with a variable electro-active beam splitter whose reflect/transmit ratio can be varied or switched on and off rapidly at a duty cycle based on the ambient level. As the ambient light gets brighter, the beam splitter's transmit/reflect ratio can be shifted so that the beam splitter reflects more light from the display and transmits less ambient light to the user's eye. The beam splitter can also be switched between a highly reflective state and a highly transmissive state at a duty cycle selected so that the eye spends more time integrating reflected display light than integrating transmitted ambient light. The splitting ratio and/or duty cycle can be adjusted as the ambient light level changes to provide the optimum experience for the user.

Abstract: A system includes a transparent rod, a light guide assembly, and first and second transparent monolithic optical parts (TMOPs) having the same refractive index. The first TMOP has a first surface having two prism arrays separated by a flat surface having a partially reflective coating, and an opposite second flat surface. Each prism array has two prisms having first and second surfaces oblique to each other. The prism arrays' first surfaces have a partially reflective coating contrary to the second surfaces. The second TMOP has a surface having a geometrically complementary shape relative to the first TMOP first surface's shape and has an opposite second flat surface. When assembled using a first optically transparent adhesive, the first and second TMOPs' second surfaces are parallel. The rod has a partially reflective gradient coating on one surface where it's assembled with the light guide assembly using a second optically transparent adhesive.

Abstract: A near-eye display (NED), comprising an augmented reality (AR) lens comprising a main prism lens and a see-through corrector lens, wherein the AR lens comprises a bottom edge that tapers toward a blunt tip, and a micro-display panel coupled to the AR lens and comprising a processor configured to process content for display to a user wearing the NED, and a display coupled to the processor and configured to project the content to the AR lens.

Abstract: An optical module includes: an image element; a prism mirror that reflects image light emitted from the image element at an inner reflection portion; a combiner that reflects the image light from the prism mirror toward a pupil position; and a barrel that is disposed between the prism mirror and the combiner and that positions the prism mirror. The barrel includes a first positioning surface brought into contact with the prism mirror in a second direction perpendicular to a first imaginary plane and parallel to a normal line of a second imaginary plane on which the image light emitted from an emission portion of the prism mirror is incident, and a second positioning portions brought into contact with the prism mirror in a third direction perpendicular to the first direction and intersecting the second direction.

Abstract: Some implementations of the disclosure relate to an optical system, including: a first light source; a secondary light source that is optically coupled to the first light source; a reflective element that is transparent with respect to the first light source but reflective with respect to the secondary light source, the reflective element being disposed between the first light source and the secondary light source; and a semi-reflective layer disposed on the secondary light source, such that reflection of light from the secondary light source by the reflective element and back through the semi-reflective element results in greater than 25% of the light from first light source exiting the optical system.

Abstract: A multifunctional earpiece comprising an ear-mountable housing, a speaker integrated with the ear-mountable housing for presenting sound, a light source integrated with the ear-mountable housing for projecting light toward skin of the wearer's face, a light detector integrated with the ear-mountable housing and configured to receive reflections from the skin corresponding to facial skin micromovements indicative of prevocalized words of the wearer, and wherein the multifunctional earpiece is configured to simultaneously present the sound through the speaker, project the light toward the skin, and detect the received reflections indicative of the prevocalized words.

Abstract: An object of the present invention is to provide a head-up display apparatus further reduced in size, the head-up display apparatus having: an image display apparatus including a light source and a display element; and a virtual image optical system in which light emitted from the image display apparatus is reflected by a windshield or a combiner of the vehicle so that a virtual image is displayed in front of the vehicle, wherein the virtual image optical system has a concave mirror and a distortion correcting lens, and the distortion correcting lens is disposed between the image display apparatus and the concave mirror, the concave mirror is disposed in a housing including an outer case along a shape of an effective light path area of the image light from the image display apparatus, and the image display apparatus is attached to part of an outer periphery of the housing.

Abstract: A laser scanning projection system for use in illuminating a waveguide of an augmented reality or virtual reality headset is disclosed. The laser scanning projection system comprises a laser source configured to emit light towards a pair of polarising beam splitters. The polarising beam splitters direct light onto a plurality of mirrors through a plurality of quarter waveplates. The laser scanning projection system further comprises a waveguide having an input configured to receive the light such that the exit pupil formed at the laser scanner is relayed into the waveguide.

Abstract: A display device includes a light guide plate; an input grating on a first surface of the light guide plate and configured to generate a diffracted transmission beam; an output grating on the first surface of the light guide plate and spaced apart from the input grating, wherein the output grating is configured to generate a first output beam emitted from the light guide plate; and an optical efficiency enhancement layer on a second surface of the light guide plate and overlapping at least one of the input grating and the output grating in a traveling direction of the input beam, the second surface being opposite to the first surface.

Abstract: A display module includes a display element, a light-guiding optical system forming an exit pupil, and an optical member including a light incidence surface and a light emission surface. The light-guiding optical system is an eccentric optical system, and includes first and second incidence areas on which the image light emitted from the light emission surface is incident. The optical member is disposed, correcting an inclination of the light emission surface with respect to the light-guiding optical system such that an variation amount in an incidence angle of the image light with respect to the first incidence area, before and after the light emission surface is inclined, is greater than an variation amount in an incidence angle of the image light with respect to the second incidence area.

Abstract: A display apparatus that includes an image display element, a collimating optical system that collimates light emitted from the image display element, a light guide plate on which light emitted from the collimating optical system is incident and that totally reflects and guides the light being incident, a first optical element that is disposed on the light guide plate and introduces the light being incident into the light guide plate, and multiple second optical elements that are disposed on the light guide plate and emit light propagated by total reflection in the light guide plate to outside of the light guide plate. The display apparatus is capable of suppressing generation of light (unnecessary light) other than light (image display light) to a wearer and suppressing manufacturing costs of the display apparatus.

Abstract: A projection lens that is a first optical member configured to emit image light from an emission portion, the image light being incident on an image element, a prism mirror that is a second optical member configured to cause the image light from the projection lens to be incident from an incident portion, a combiner configured to reflect the image light from the prism mirror toward a pupil position, and a light blocking member supported around at least one of the incident portion of the prism mirror and the emission portion of the projection lens are provided, wherein when viewed from a direction perpendicular to an optical axis of the image light incident on the incident portion of the prism mirror, at least a portion of the incident portion of the prism mirror protrudes from the light blocking member toward the emission portion of the projection lens.

Abstract: A head-mountable display can include a structural frame defining a viewing opening, an optical module coupled to the structural frame. The optical module can include a display screen to project light through the viewing opening. The display screen can define an inner edge, an outer edge opposite the inner edge, a lower edge extending between the inner edge and the outer edge, and an upper edge opposite the lower edge. The optical module can include a first camera disposed adjacent the inner edge and closer to the lower edge than the upper edge, and a second camera disposed adjacent the lower edge and closer to the outer edge than the inner edge.

Abstract: An optical see-through (OST) near-eye display (NED) system, integrating ophthalmic correction for an eye of a user, includes a partially transmissive partially reflective lens, including an inner surface having an inner surface radius of curvature exhibiting a first optical power. An outer surface has an outer surface radius of curvature exhibiting a second optical power. The lens is faces the eye to transmit incoming light of an outward scene to the eye. An electro-optical unit optically couples with the lens, and includes a light display projecting a light beam image onto the inner surface, to reflect the light beam image toward the eye. The electro-optical unit is located at a user's glabellar region. The first optical power provides ophthalmic correction with respect to the reflected light beam image. The second optical power is configured to provide ophthalmic correction with respect to transmitted incoming light from the outward scene.

Abstract: A head-mounted display according to an embodiment includes a reflective member configured to reflect display light for forming a display image toward a user, a beam splitter arranged between the reflective member and the user across a space in front of a left eye and a space in front of a right eye, a first divider plate arranged in front of the beam splitter between the space in front of the left eye of the user and the space in front of the right eye, and a second divider plate arranged behind the beam splitter between the space in front of the left eye of the user and the space in front of the right eye, and an end of the first divider plate proximate to the beam splitter is hidden from the user.

Abstract: The present application discloses a system and device for displaying content. The system includes an optical unit that is wearable. The optical unit includes a magnifying lens, a front light, and a display. The front light illuminates the display from the front of the display to be observable by a user via the magnifying lens.

Abstract: In some embodiments, a display device includes one or more waveguides having a vapor deposited light absorbing film on edges of the waveguide to mitigate ghost images. In some embodiments, the film is formed directly on the edge of the waveguide by a vapor deposition, such as an evaporative deposition process. In some embodiments, the light absorbing films may comprise carbon, for example carbon in the form of one or more allotropes of carbon, such as fullerenes, or black silicon.

Abstract: Described herein are systems and methods for reducing image aberrations in high magnification photography with partial reflectors. In particular, by an imaging device or camera that is built into or is included in a cell phone, smart phone, tablet, laptop or any other mobile device. The systems and methods include a light passing through a lens, a portion of said light then undergoes a number of partial reflections in-between two partial reflectors, and a portion of said light then reaches an imaging sensor. The partial reflections enable a longer light path to reach the imaging sensor, thus enabling a longer focal length to be used, which enables higher magnification. Described are methods and embodiments to select the physical parameters of optical elements in systems with partial reflectors, in order to create images with reduced image aberrations.

Abstract: Disclosed herein is a compact optical device for augmented reality having a ghost image blocking function and a wide field of view. The compact optical device includes: an optical means configured to transmit at least part of real object image light therethrough toward the pupil of an eye of a user; a first reflective means disposed inside the optical means and configured to transfer the augmented reality image light output from an image output unit to a second reflective means; and a second reflective means disposed inside the optical means and to reflect the augmented reality image light, transferred from the first reflective means, and transfer the augmented reality image light to the pupil of the eye of the user, thereby providing an image for augmented reality to the user.

Abstract: The present invention provides an optical device for augmented reality, the optical device including: an optical means for transmitting at least part of visible light therethrough; and a reflective unit group including a plurality of reflective units disposed in a line along a first direction, which is any straight-line direction, on the surface of the optical means or inside the optical means; wherein the reflective units reflect image light, output from an image output unit configured to output image light corresponding to an image for augmented reality, toward the pupil of an eye of a user.

Abstract: An eXtended Reality (XR) display system includes a Light Emitting Diode (LED) display controller, and a Light Emitting Diode (LED) near-eye display element operatively coupled to the LED display driver. The LED near-eye display element includes one or more motors and an LED array operably connected to the one or more motors. During operation, the LED display driver receives video data including a rendered virtual object of an XR experience and generates LED array control signals based on the video data, the LED array control signals causing one or more LEDs of the LED array to be energized in a sequence. The LED display driver also generates synchronized motor control signals and simultaneously communicates the LED array control signals to the LED array and the synchronized motor control signals to the one or more motors causing the LED near-eye display element to display the rendered virtual object.

Abstract: A head-up display is configured to project an image on a transparent reflection member to cause an observer to visually recognize a virtual image, and includes a display device configured to display the image, and a projection optical system configured to project the image displayed by the display device as the virtual image for the observer. The projection optical system is configured to form the image as an intermediate image, and includes a first optical element configured to condense light, a first lens configured to condense light, and a second optical element configured to diffuse light. The first optical element, the first lens, and the second optical element are disposed in this order along an optical path from the display device.

Abstract: A method for generating a spatially transformed optical output from a laser system, the method comprising: disposing a laser gain medium within a laser cavity structure; arranging an interferometric device to complete the laser cavity structure, wherein the interferometric device receives an input beam from laser oscillation in the laser cavity structure, splits the input beam into two sub-beams, and recombines the two sub-beams to provide an optical feedback beam to sustain laser oscillation; configuring the optical components that comprise the interferometric device to provide relative misalignment of the two sub-beams that are produced internally to the interferometric device; using at least a first output port of the interferometric device to provide an output beam of the laser system that due to the misalignment is a spatial transformation of the internal mode structure of the laser; and using at least a second output port of the interferometric device to provide the optical feedback beam to the laser ca

Abstract: Provided is a display device including a light guide plate; a reflective prism configured to reflect an imaging beam toward the light guide plate, wherein the imaging beam reflected by the reflective prism travels within the light guide plate at an angle greater than a critical angle of the light guide plate; and a diffraction grating configured to diffract the imaging beam traveling within the light guide plate to an angle less than or equal to the critical angle of the light guide plate, wherein the reflective prism includes a first surface in contact with the light guide plate, and a second surface configured to reflect the imaging beam.

Abstract: One embodiment is directed to a system for enabling two or more users to interact within a virtual world comprising virtual world data, comprising a computer network comprising one or more computing devices, the one or more computing devices comprising memory, processing circuitry, and software stored at least in part in the memory and executable by the processing circuitry to process at least a portion of the virtual world data; wherein at least a first portion of the virtual world data originates from a first user virtual world local to a first user, and wherein the computer network is operable to transmit the first portion to a user device for presentation to a second user, such that the second user may experience the first portion from the location of the second user, such that aspects of the first user virtual world are effectively passed to the second user.

Abstract: A method is performed at an electronic device with one or more processors, a non-transitory memory, and a see-through display. The method includes determining first and second light superposition values that are associated with ambient light from a physical environment. The first light superposition value quantifies the ambient light incident on a first region of the see-through display. The second light superposition value quantifies the ambient light incident on a second region of the see-through display. The method includes modifying a first pixel value of image data, via a color correction function, in order to generate a corresponding first pixel value of display data. The color correction function is based on a combination of the first and second light superposition values. The method includes displaying the corresponding first pixel value of the display data on the see-through display.

Abstract: A folded optical system that comprises two prisms with refractive power and in which at least one surface of at least one of the prisms is not rotationally symmetric. The materials and surfaces of the prisms in the folded optical system may be selected to provide a low F-number (e.g., <=2.4), full field of view (FOV) of 30 degrees or less. The folded optical system may be implemented in a small package size while still capturing sharp, high-resolution images, making embodiments of a camera including the folded optical system suitable for use in small and/or mobile multipurpose devices.

Abstract: An optical system, including a reflective polarizer, and a display and a mirror disposed on a same side of, and generally facing, the reflective polarizer. The reflective polarizer may transmit at least 80% of incident light having a first polarization state and may reflect at least 80% of incident light having a second polarization state, and the mirror may reflect at least 80% of the incident light for each of the first and second polarization states. The central locations of the display, reflective polarizer, and mirror may define a midplane which includes first, second, and third regions, such that the first region includes portions of the image rays that pass at least once across the region, the second region includes portions of the image rays that pass at least twice across the region, and the third region includes portions of the image rays that pass three times across the region.

Abstract: A head-up display includes: a display that displays an image; and a projection optical system that forms a virtual image. The projection optical system includes: a first mirror disposed above the display that reflects display light of the image; and a second mirror that reflects the display light from the first mirror toward a display medium onto which the virtual image is projected. Moreover, a first expression that defines a sag height at a position (x, y) relative to an axis that defines a plane is satisfied. Moreover, second and third expressions related to variable in the first expression are also satisfied.

Abstract: Systems and methods for eyewear devices with integrated heads-up displays are provided. In one embodiment, an eyewear device provides an integrated heads-up display having a partially reflective element carried by an eyeglass lens to reflect towards the user computer-generated imagery projected on to it, while permitting the passage of light through the reflective surface in the direction of view of the user. The display mechanism further includes a cooperating projector assembly housed by a frame of the eyewear device in an overhead configuration relative to the partially reflective element. The projector assembly is housed by a top bar of the eyewear frame, with the reflective surface being housed wholly within the lens.

Abstract: Protective mask (1) comprising a frame (5) for mounting on a user's face, a window (2) carried by said frame, an optical display system (10) which is capable of projecting an image, and a prism (20) capable of receiving said image from said display and forwarding it, characterised in that the prism (20) has a first (21) and a second (22) active face and a basal face (23), the window having, on its inner face (3), a projection area (30), and said display and said prism are configured so that said display projects said image onto the first active face (21), the image crosses the prism and is reflected by the basal face (23) to the second active face (22), the image is projected from said second active face (22) onto said reflection area (30) of said window (2), and said window projects said image into a user's eye.

Abstract: An electronic device may include a display module that generates light and an optical system that redirects the light towards an eye box. The system may include an input coupler on a waveguide and a lens that directs the light towards the input coupler. The input coupler may include a prism having a reflective surface that reflects the light into the waveguide. The reflective surface may be curved to provide the light with an optical power. The prism may be configured to expand a field of view of the light. A birefringent beam displacer may expand the effective pupil size of the light. The lens may include lens elements that converge the light at a location between the lens elements and the waveguide. A switchable panel may be placed at the location and toggled between first and second orientations to increase the effective resolution of the light.

Abstract: An optical device includes a lightguide having a first pair of external surfaces parallel to each other, and at least two sets of facets. Each of the sets including a plurality of partially reflecting facets parallel to each other, and between the first pair of external surfaces. In each of the sets of facets, the respective facets are at an oblique angle relative to the first pair of external surfaces, and at a non-parallel angle relative to another of the sets of facets. The optical device is particularly suited for optical aperture expansion.

Abstract: Display systems, such as near eye display systems or wearable heads up displays, may include a laser projector having an optical switch assembly disposed an at input to an optical scanner of the laser projector. The optical switch assembly includes at least one optical switch, and a controller selectively modifies the orientation of each optical switch to selectively change an angle at which laser light is directed onto a scan mirror of the optical scanner. Changing this angle shifts the scan region over which the scan mirror scans the laser light and, relatedly, shifts a region of a field of view of the display. In some embodiments, the controller is configured to modify the optical switch orientation(s) to correct non-idealities in the angle of the laser light.

Abstract: An ultra-thin lens for augmented reality (AR) display includes: a primary lens, an intermediate lens, and a secondary lens. After entering the primary lens, image light undergoes two total reflections, then enters the intermediate lens and is partially reflected, then is directed to a human eye through the intermediate lens and the primary lens. The secondary lens is configured on the other side of the intermediate lens, and environmental light is directed to the human eye through the secondary lens, the intermediate lens, and the primary lens. According to the ultra-thin lens, total reflection and light splitting functions of the image light are realized respectively through the primary lens and the intermediate lens, so that the entire lens has a thin and light profile.

Abstract: A head-mounted display device includes an image display unit (300a, 300b) configured to emit image light, a light guide member (100a, 100b) configured to guide the image light and emit the image light to eyes of a wearer who wears the head-mounted display device, and a relay optical system (201a, 201b) arranged between the image display unit and the light guide member, and configured to relay the image light from the image display unit to the light guide member, and form an intermediate image at least once before the image light enters the light guide member.

Abstract: It is provided the wearable electronic device including a skeletal member comprising a temple, a frame, and a bridge; a display fixed to the temple and configured to output visible light corresponding to a virtual image; a beam steering member comprising a liquid crystal and configured to adjust a direction of the visible light traveling from an exit pupil of the display to an input grating of an optical waveguide using the liquid crystal; the optical waveguide configured to adjust a path of the visible light and output the virtual image; an infrared output unit configured to output infrared light for tracking a gaze of a user; an infrared sensor configured to detect infrared light reflected from a pupil of the user; a bend sensor connected to the temple and the frame to measure a first bending state between the temple and the frame.

Abstract: An optical device, having at least first and second light-transmitting substrates, each having at least two external surfaces and an input aperture and an output aperture. The external surface of the first light-transmitting substrate is optically cemented to an external surface of the second light-transmitting substrate by an optical adhesive defining an interface plane. The refractive index of the optical adhesive is substantially lower than the refractive index of the first substrate. Part of the light waves entering the device through the input aperture and exiting the device through the output aperture impinge on the interface plane of the first substrate having incidence angles smaller than the critical angle. Another part of the light waves impinging on the interface plane have incidence angles higher than the critical angle. The interface plane is substantially transparent for the light waves impinging on interface plane having incidence angles smaller than the critical angle.

Abstract: Eyewear including a multi-layered display having an adhesive bonding the layers together at an offset distance inward from an outer edge of the layers. The display has an image display layer, such as an optical waveguide in one example, and a pair of layers encompassing the image display layer and which may comprise optically transparent substrates, such as glass. A respective adhesive is positioned the offset distance inward from the outer edge of the display layer between the image display layer and each of the pair of layers to reduce stress in the display. Each of the adhesives may be a continuous bead such that there is no adhesive between the pair of layers and the image display layer at the outer edges. In one example, the offset distance may be at least double the thickness of the image display layer to reduce stress in the image display layer.

Abstract: A head-up display device (10) includes one picture generation unit (20) that emits both first light (L1) and second light (L2) and includes an optical path adjuster (40) disposed in an optical path of at least one of the first light (L1) and the second light (L2) and having light transmission properties and substantially zero optical power. The optical path adjuster (40) gradually separates the first light (L1) and the second light (L2) as compared with a state before at least one of the first light (L1) and the second light (L2) enters the optical path adjuster (40) in such a manner that the first light (L1) creates a first virtual image (V1) in a position closer to an operator and the second light (L2) creates a second virtual image (V2) in a position farther from the operator than the first virtual image (V1).

Abstract: A projection method includes detecting a first section formed of a flat surface at a projection surface, detecting a second section formed of a concave surface at the projection surface, projecting image light in a first visual aspect onto the first section by a projector, and projecting image light in a second visual aspect different from the first visual aspect onto the second section by the projector.

Abstract: Disclosed are a near-eye display device and a near-eye display system. The excitation light source structure provides excitation light to the first waveguide structure, and the outgoing coupling grating structure corresponding to the first waveguide structure receiving the excitation light may be further irradiated by the excitation light, and be excited and output the light with a pixel color corresponding to the first waveguide structure. That is, the outgoing coupling grating structure corresponding to the first waveguide structure receiving the excitation light can derive the light with the corresponding pixel color emitted by the projection-based display, and be excited by the excitation light emitted by the excitation light source structure to output light with a pixel color corresponding to the first waveguide structure.

Abstract: There is disclosed herein a display device comprising a picture generating unit, a waveguide pupil expander and a viewer-tracking system. The picture generating unit comprises a first display channel, a second display channel and a controller. The first display channel is arranged to output first spatially-modulated light of a first colour. The first spatially-modulated light corresponds to a first picture. The second display channel is arranged to output second spatially-modulated light of a second colour. The second spatially-modulated light corresponding to a second picture. The controller is arranged to drive the first display channel and second display channel. The waveguide pupil expander comprises a pair of parallel reflective surfaces. The waveguide pupil expander defines an input port and a viewing window. The input port is arranged to receive the first spatially-modulated light and the second spatially-modulated light.

Abstract: The invention relates to a diffractive waveguide display device comprising an image projector capable of emitting laser rays at one or more wavelengths, a waveguide body having a first surface and an opposite second surface and adapted to guide said laser rays from the image projector between the first surface and the second surface, an out-coupling diffractive optical element on said first surface for coupling said laser rays out of the waveguide body, and an anti-interference coating (35) arranged on the second surface of the waveguide body aligned with the out-coupling diffractive optical element.

Abstract: An object of the present invention is to provide a head-up display apparatus further reduced in size, the head-up display apparatus having: an image display apparatus including a light source and a display element; and a virtual image optical system in which light emitted from the image display apparatus is reflected by a windshield or a combiner of the vehicle so that a virtual image is displayed in front of the vehicle, wherein the virtual image optical system has a concave mirror and a distortion correcting lens, and the distortion correcting lens is disposed between the image display apparatus and the concave mirror, the concave mirror is disposed in a housing including an outer case along a shape of an effective light path area of the image light from the image display apparatus, and the image display apparatus is attached to part of an outer periphery of the housing.

Abstract: There is described an interferometer for use in an optical locker. The interferometer comprises at least two transparent materials having different thermal path length sensitivities. The interferometer is configured such that an input beam is split by the interferometer into first and second intermediate beams, which recombine to form an output beam, the first and second intermediate beams travelling along respective first and second intermediate beam paths which do not overlap. At least one of the intermediate beam paths passes through at least two of the transparent materials. A length of each intermediate beam path which passes through each transparent material is selected such that an optical path difference between the first and second intermediate beam path is substantially independent of temperature.

Abstract: A see-through head mounted display with controllable light blocking includes an optics module comprising a light source and image source positioned on a same side of an angled partially-reflective surface, wherein the light source projects light off the surface to the image source which reflects the light as image light to the surface which transmits the image light along a first axis. The display also includes a flat combiner positioned to reflect the image light off of a first side and simultaneously transmit incident light through the first and a second side, along an optical axis perpendicular to the first axis to provide a view of a displayed image overlaid onto a see-through view of the environment, and a controllable light blocking element arranged generally parallel to the flat combiner and in front of the second side to block light incident on the same optical axis as the image light.

Abstract: An optical device including: a display device configured to display an image; and a lens including a plurality of reflectors that reflect the image from the display device to a first surface of the lens, wherein the plurality of reflectors include: a first reflector; and a second reflector having a size different from a size of the first reflector.

Abstract: A display module includes an image light generation device, a light-guiding member, a first reflection surface configured to reflect the imaging light incident via the light-guiding member, a first diffraction element configured to diffract the imaging light, and a second diffraction element configured to diffract the image light and form an exit pupil. The image light is sequentially incident on a first deflection surface, a second deflection surface, a second reflection surface, a third reflection surface, a fourth reflection surface, and a third deflection surface inside the light-guiding member, and a distance from a reference position where an optical axis of the exit pupil and an emission surface intersect to the second deflection surface is longer than a distance from the reference position to the first deflection surface and longer than a distance from the reference position to the second reflection surface.

Abstract: A system for displaying a stereo image is disclosed. The system includes a stereoscopic head up display (HUD) that includes a combiner and a display configured to display a stereo image. The system further includes either a head tracking sensor or an eye tracking sensor configured to generate a tracking dataset. The system further includes a processor and a memory with instructions that cause the processor to receive the tracking dataset, generate a distortion map based on the tracking dataset and a distortion function, receive a media stereo image, generate a stereo signal based on the distortion map and the media stereo image, and transmit the stereo signal to the display. The system is capable of conveying an image to an operator in the absence of a relay lens.