Abstract: The light communication solution presented herein uses waveguides with multiple entrances to efficiently collect light used for light communications and propagate that collected light to a sensor. To that end each waveguide entrance, or at least all but the initial waveguide entrance, is configured to not only collect and input the light into the TIR waveguide, but also to maintain TIR of light already propagating within the TIR waveguide. In so doing, the solution presented herein increases the amount of light available for light communications. Further, because each waveguide may channel light from multiple collection points to a single sensor, the solution presented herein reduces the number of sensors needed for the light communications. The solution presented herein facilitates the implementation of light communications for a wide variety of devices (e.g., cellular telephones, tablets, smartphones, smart watches, smart glasses, etc.) and/or in a wide variety of scenarios.

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: A display apparatus includes a receiver, an image processor, a display and a controller. The receiver receives an image of content in the form image segments. The image processor processes the image of content received via the receiver. The display displays the processed image of content. The controller controls the image processor to display an image corresponding to one viewpoint of the image of content, and display information about a display quality of at least one image segment based on reception states of the image segments. With this, the display apparatus may provide the information about display quality for the at least one segment of the image of content, thereby allowing a user to watch the image of content while smoothly moving a viewpoint.

Abstract: Method for providing a head mounted optical system, the method comprising: an optical system providing step (S1), during which an optical system with an active function is provided and, an encapsulating step (S8), during which the optical system is at least partly encapsulated in a transparent capsule by stacking in close contact the optical system with at least one substrate of the transparent capsule and made integral with an adhesive.

Abstract: A display system providing in the motorcyclist's field of view all required visual information in form of the image projected into optical infinity in traffic direction, realized by using located in the motorcyclist's helmet the autonomous optoelectronic system including the display module comprising: the light-emitting micro display, the collimating lens, the flat semitransparent reflector, fixed on the lens case and located in front of the motorcyclist's eye so that to observe the luminous informational image projected into optical infinity against the external situation picture background. Said reflector is movably mounted in two positions: working and distant from the face. The lens assembly including the micro display and bracket with the reflector is equipped with an adjustment bracket allowing to place it in front of right or left motorcyclist's eye. A camera and a photo sensor measuring the background brightness are mounted on the helmet body.

Abstract: A naked-eye three-dimensional display device includes a display panel, a liquid crystal grating, a processor and an image collector, wherein, the image collector is configured to obtain first current viewing information and second current viewing information, and send the same to the processor; the processor is configured to receive and store the first and second current viewing information, adjust a width and/or a position of a light transmitting region of the liquid crystal grating according to the first current viewing information, and adjust an output picture of the display panel, according to the second current, viewing information and the width and/or the position of the light transmitting region of the liquid crystal grating adjusted.

Abstract: A display apparatus includes: a display surface configured to display an image; and a concave mirror configured to reflect light beams from the display surface toward a transparent member, in which a virtual image of the image is presented by the transparent member. An optical path after a first light beam is reflected in the transparent member coincides with an optical path after a second light beam is reflected in the transparent member by the reflection in the concave mirror, the first light beam reaching the transparent member from one point on the display surface and reflecting on a front surface of the transparent member, and the second light beam reaching the transparent member from the one point and reflecting on a rear surface of the transparent member.

Abstract: An augmented reality system includes a power source, a sensor array including one or more sensors, a lens, a projector, and a first circuit. The first circuit can be powered by the power source and is capable of communicating with the sensor array and the projector. The first circuit can receive and process data collected by the sensor array to produce an augmented reality overlay. The lens can be configured to be in a first state wherein light is prevented from passing through a first portion of the lens, and the projector can project at least a first portion of the augmented reality overlay onto at least a second portion of the lens in the first state.

Abstract: A composite optical element includes a first optical component and a second optical component. The first optical component includes a first front surface, a first back surface, and a first junction surface. The second optical component that includes an end surface, a second front surface, a second back surface, and a second junction surface. The first front surface and the second front surface together form a first surface of the composite optical element, and the first back surface and the second back surface together form a second surface of the composite optical element. The second junction surface is coupled to the first junction surface to form a beam splitter that transmits light in a first band and reflects light in a second band toward the end surface.

Abstract: A near-eye optical element includes a refractive layer and at least one infrared reflecting layer. The refractive layer has an eyeward side and a scene side. The eyeward side of the refractive layer is disposed opposite of the scene side of the refractive layer. The infrared reflecting layer is embedded in the refractive layer and configured to receive an infrared beam from an infrared illuminator and direct the infrared beam out the eyeward side of the refractive layer to illuminate an eyebox area with infrared light. The infrared reflecting layers are configured to reflect the infrared beam and pass visible light.

Abstract: A wearable device that aids vision of a person is disclosed that includes a display system including a display device, a first polarizer parallel to the display device, a quarter waveplate, and a mirror. The display device, the first polarizer, the quarter waveplate, and the mirror are arranged sequentially such that the display device is disposed at a first end of the display system and the mirror is disposed at a second, opposite end of the display system. The display system has a length corresponding to a focal length of the mirror. A camera system includes a camera and an image stabilization system with a zoom magnification configured to provide up to at or about 60 times zoom. The display system and the camera system are secured to a mount and are movable relative to each other about the mount. The mount is secured to a frame.

Abstract: A head-up display apparatus displays a virtual image suitably overlapped with actual scenery in accordance with a running condition of a vehicle. The head-up display apparatus acquires various kinds of vehicle information which can be detected by a vehicle and the display of the video image is based on the vehicle information. A mirror is configured to reflect the video image formed by the video image display to project onto the windshield. A mirror driver is configured to change an angle of the mirror and a display distance adjusting mechanism is configured to adjust a display distance of the virtual image with respect to the driver. The angle of the mirror is adjusted via the mirror driver based on the vehicle information such that the virtual image can be displayed with respect to the driver to be overlapped with the scenery.

Abstract: Embodiments include a head-worn display including a display panel sized and positioned to produce a field of view to present digital content to an eye of a user, and a processor adapted to present the digital content to the display panel such that the digital content is only presented in a portion of the field of view, the portion being in the middle of the field of view such that horizontally opposing edges of the field of view are blank areas. The processor is adapted to shift the digital content into one of the blank areas to adjust the convergence distance of the digital content and thereby change the perceived distance from the user to the digital content.

Abstract: Disclosed herein is an in-mask display or feedback system having a lens coupled to a face blank of the mask, the lens covering a facepiece. The feedback system includes a display apparatus coupled to the facepiece, and disposed within an interior of the mask, the display apparatus being powered by a first power source coupled to a housing of the display apparatus. The feedback system further includes a recording device (e.g., a camera) coupled to the face blank, the recording device operable to communicate data (e.g., wirelessly or wired) with the display apparatus. In some approaches, the recording device is powered by a second power source. In other approaches, the first power source provides power to both the recording device and the display apparatus. In another approach, the display apparatus includes an adjustment aperture formed therethrough to allow adjustment of an eye piece housing a display.

Abstract: The present invention provides a display, including a first display device, a second display device, a half mirror and a bifocal lens. The first display device provides a first image light, and the second display device provides a second image light. The half mirror has a first surface and a second surface opposite to each other, and is spaced apart from the first display device and the second display device by a first distance and a second distance respectively, where the first distance is not equal to the second distance. The first image light is emitted to the first surface, and the second image light is emitted to the second surface. The bifocal lens is spaced apart from the half mirror by a third distance and faces the first surface. The bifocal lens has a first focal length and a second focal length different from each other.

Abstract: An SPI-based HUD backlight control method places multiple backlight values obtained by calculation into a backlight setting command and transmits the same to an LED controller via an SPI bus. After obtaining the backlight setting command, the LED controller sequentially applies one backlight value in the backlight setting command each time a frame synchronization signal is obtained. The method reduces the SPI bus load, so that the smoothness of backlight variation is increased, thereby ameliorating display flicker.

Abstract: A head mounted display and a multiple depth imaging apparatus thereof are provided. The imaging apparatus includes a beam splitting device, a first display, a second display, a third display and a lens set. The beam splitting device has a first reflective surface, a second reflective surface and a transmissive surface. The first display projects a first image to the first reflective surface. The second display projects a second image to the transmissive surface. The third display projects a third image to the second reflective surface. The lens set is disposed between the beam splitting device and a target area. The first image, second image and third image are respectively imaging on a first imaging surface, a second imaging surface and a third imaging surface, and distances between the target area and the first, second and third imaging surfaces are different.

Abstract: A system is provided that includes an event site device having a display and an imaging device. The event site device is configured to capture an image of a user's face for identification. The system further includes a server configured to associate ticketing information with an identity of the user, receive the image of the user's face from the event site device, determine the identity of the user based on facial feature information stored for the user, retrieve the ticketing information associated with the user, and transmit the ticketing information to the event site device for presentation on the display.

Abstract: A split exit pupil heads-up display (HUD) system and method. The HUD system architecture makes use of a split exit pupil design method that enables a modular HUD system and allows the HUD system viewing eye-box size to be tailored while reducing the overall volumetric aspects. A single HUD module utilizes a micro-pixel imager to generate a HUD virtual image with a given viewing eye-box size. When integrated together into a single HUD system, a multiplicity of such HUD modules displaying the same image enables an integrated HUD system to have an eye-box size that equals the same multiple of the eye-box size of a single HUD module. The brightness of the integrated HUD system is maintained while the eye-box size becomes multiple size of the eye-box of a single module. The integrated HUD system can be comprised of multiplicity of single HUD modules to scale the eye-box size to match the intended application while maintaining system brightness.

Abstract: Provided is a head-mounted display apparatus including: a display unit configured to display each of virtual screens that is set to each of a plurality of predetermined focal lengths; a distance-specific image generation unit configured to generate distance-specific display images for displaying, on the virtual screens, a display object representing an object to be displayed present between two focal lengths next to each other of the plurality of focal lengths; and a display controller configured to display each of the generated distance-specific display images on the virtual screen corresponding to a focal length far in a direction of a field of view of a user wearing the head-mounted display apparatus, out of the two focal lengths next to each other.

Abstract: According to various embodiments of the present invention, a three-dimensional imaging device and/or an electronic device may comprise: a stand for supporting an electronic device including a display panel; a half mirror disposed on one surface of the stand in such a way as to slantingly face the display panel of the electronic device supported by the stand; and a retro-reflection member disposed on the stand in such a way as to incline toward the half mirror, wherein the half mirror reflects an image (hereinafter, “a first output image”) output from the display panel to introduce the reflected image into the retro-reflection member, and allows the image reflected by the retro-reflection member to transmit therethrough, so as to form an image (hereinafter, “a first aerial image”) corresponding to the first output image, on a space at another side of the half mirror. Such an electronic device may exist in various forms according to embodiments.

Abstract: An electronic device may include a display system and control circuitry. The user's environment may be presented on the display system. The environment on the display system may be a captured image of the environment, may be the actual real world viewed through an optical combiner, or may be a completely virtual image representing the environment. The control circuitry may gather information about external electronic devices in the user's environment, including determining a type and location of each external electronic device and a status of wireless communications links between external electronic devices. The display system may overlay computer-generated display elements onto the user's environment to indicate the status of wireless communications links between the external electronic devices. In response to touch or gesture input, the control circuitry may send control signals to the external electronic devices to establish or break wireless communications links between external electronic devices.

Abstract: A head-mounted imaging apparatus has a projector that is energizable to project image-bearing light and a light-conditioning element that directs and shapes the image-bearing light from the projector to form a real image plane. A lenslet array is positioned adjacent to the real image plane and optically disposed at substantially one focal length away from a curved mirror, wherein the surface of the curved mirror is substantially spherical. There is a beamsplitter in the path of light from the real image at the lenslet array and disposed to direct at least a portion of the light from the real image toward the curved mirror. The curved mirror directs light from the beamsplitter to form a virtual image for an observer who wears the head-mounted imaging apparatus.

Abstract: A display device includes a screen to form an intermediate image with light; a concave mirror, and a first mirror disposed between the screen and the concave mirror. The first mirror includes a first reflective area to reflect the light emitted from the screen to the concave mirror; a second reflective area to reflect the light emitted from the concave mirror to an area where a virtual image is formed; and a common reflective area in which the first reflective area and the second reflective area at least partly overlap on each other.

Abstract: Methods and apparatus, including computer program products, implementing and using techniques for projecting a source image in a head-mounted display apparatus for a user. A first display projects an image viewable by a first eye of the user. A first peripheral light element is positioned to emit light of one or more colors in close proximity to the periphery of the first display. A receives data representing a source image, processes the data representing the source image to generate a first image for the first display and to generate a first set of peripheral conditioning signals for the first peripheral light element, directs the first image to the first display, and directs the first set of peripheral conditioning signals to the first peripheral light element, As a result, an enhanced viewing experience is created for the user.

Abstract: The present disclosure discloses a camera optical lens, including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of glass material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, and the sixth lens is made of plastic material. The camera optical lens further satisfies specific conditions.

Abstract: An eyepiece optical system is configured to emit image light that is emitted from a plurality of display elements and corresponds to a plurality of areas being divided, to a position corresponding to an eye of an observer, wherein a first optical member of a complex type disposed at a position closest to an emitting side corresponding to at least two areas of the plurality of areas has a first optical surface on the emitting side, and the first optical surface is expressed by one curvature.

Abstract: A head mounted display device including a main body, a fixing part, a plurality of speakers and at least one actuator is provided. The main body has a display and a base, and the display and the base are in contact with each other. The fixing part is coupled to the main body and forms an accommodation zone with the base. The speakers are respectively disposed on a plurality of positions of the base and the fixing part. The actuator is disposed on the fixing part.

Abstract: The present disclosure discloses a camera optical lens, including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of plastic material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, and the sixth lens is made of plastic material. The camera optical lens further satisfies specific conditions.

Abstract: A display device includes a display, an optical modulator, an eye tracking module, and a controller. The display module includes a plurality of pixels. The optical modulator is disposed on the display module and modulates the light emitted from the display module to corresponding directions. The eye tracking module tracks the positions of a viewer's eyes. The controller defines an eye-to-eye line passing through the positions of the viewer's eyes, and generates image data of the plurality of pixels according to a plurality of viewing positions on the eye-to-eye line.

Abstract: The invention provides a parameter calibration method, applicable to a stereoscopic display device including a camera. The parameter calibration method includes the following steps: displaying a virtual object for calibration; obtaining, by using the camera, a two-eye visual angle by which the virtual object for calibration is watched; calibrating a human eye parameter according to the two-eye visual angle, where the human eye parameter includes at least one of an interpupillary distance parameter and an eye relief parameter; and setting the stereoscopic display device according to the calibrated human eye parameter, such that the stereoscopic display device displays according to the calibrated human eye parameter. In addition, a stereoscopic display device using the parameter calibration method is also provided.

Abstract: A waveguide and a method for manufacturing the same are disclosed herein. In an embodiment, the waveguide includes a waveguide tube and a light-shielding film disposed on a cutsurface of the rim side of the waveguide tube. The light-shielding film has a thickness of 2 to 120 ?m, an optical density (OD) of 0.01 to 0.7 on the basis of a light-shielding film thickness of 1.0 ?m, and a hardness of 3H or more in accordance with ASTM D3363 standard.

Abstract: Arrangements of the present disclosure disclose a head-up display, a head-up display method, and a vehicle. The head-up display includes a head-up display component configured to display an image on a projection location. The display includes a master control component connected to a driving component. The master control component is configured to obtain vehicle information, analyze the vehicle information, and generate a control instruction based on an analysis result. The vehicle information includes vehicle positioning information and vehicle attitude information, or traveling road information and vehicle attitude information. The driving component, connected to the head-up display component, is configured to adjust the head-up display component based on the control instruction such that the projection location of the image displayed by the head-up display component remains at a consistent relative height with respect to the ground.

Abstract: An augmented reality device including a transparent display screen and a lens system disposed adjacent to the transparent display screen, a control processor in communication with a data store, the data store including one or more virtual image records. If the lens system is a micro-lens, the control processor provides control commands to the transparent display screen to cause generation of an augmented reality image by interspersing inactive pixels elements with active pixel elements to provide a spatial domain combined image of the real world and virtual images. If the lens system is a focus tunable lens, the control processor provides control commands to the transparent display screen and the focus tunable lens to cause alternating transparent views of the real world image object and virtual image. The alternating of images occurring at frame rate greater that visible by a user's eye(s).

Abstract: The combiner has a reflecting surface that reflects incident light. When the incident light has an incident angle in a range from 0° to 25°, inclusive, defined as a first value, in a wavelength range from 400 nm to 700 nm, inclusive, the upper limit wavelength of a wavelength range having a reflectance of 90% or more of the reflectance peak of the incident light is shorter than 700 nm. When the incident angle takes a second value in a range from 60° to 85°, inclusive, in the wavelength range from 400 nm to 700 nm, inclusive, the reflectance peak of an S-wave component contained in the incident light has a wavelength shorter than 570 nm.

Abstract: A display device assembly adapted to assemble a display unit to a display device includes a frame body, an optical element, and a supporting element connected to the frame body. The frame body fixes the display unit to be inclined to a viewing direction by a first angle. The display unit provides an image beam. The optical element is disposed on the frame body and inclined to the viewing direction by a second angle, and the optical element and the display unit face each other. The optical element has a multi-layer coating and located on a transmission path of the image beam. The image beam is transmitted to the optical element for reflection and transmitted to a user, so that the user observing the optical element in the viewing direction obtains a combination of a virtual image and an environmental image presented by the real world.

Abstract: A wearable device and a method of outputting a virtual image by the wearable device area provided. The wearable device includes a projection type display unit that includes a variable lens and configured to project a light forming an image, a first sensor configured to detect a light reflected from an eye of a user, and a processor configured to control to display the virtual image on the projection type display unit by controlling one of a location of the variable lens and refractive power of the variable lens based on retina image information corresponding to the detected light.

Abstract: A virtual image display device has a light guide device in which the half mirror layer (the semi-transmissive reflecting film) of the light guide member is formed on the partial area of the first junction surface, and the second junction surface of the light transmitting member is bonded to the first junction surface in at least the exceptional area. Therefore, it is possible to increase the bonding strength of the first junction surface and the second junction surface, namely the strength of the light guide device composed of the light guide member and the light transmitting member combined with each other even in the case in which the attachment force of the half mirror layer (the semi-transmissive reflecting film) with respect to the first junction surface is not sufficiently strong.

Abstract: An apparatus for head-mounted displays may include (i) a flexible planar support frame, (ii) a left eye cup coupled to a left side of the flexible planar support frame and a right eye cup coupled to a right side of the flexible planar support frame, (iii) left-eye and right-eye display screen areas mounted to the flexible planar support frame such that the left-eye display screen area projects toward a left eye aperture defined by the left eye cup and the right-eye display screen area projects toward a right eye aperture defined by the right eye cup. The flexible planar support frame may be bendable such that the distance between projections of the left-eye and right-eye display screen areas onto a viewing plane varies as the flexible planar support frame bends, thereby adjusting for varying interpupillary distances. Various other devices, systems, and methods are also disclosed.

Abstract: A display device includes a transparent display screen, and a first lens group that converges light. The transparent display screen intersects a main optical axis of the first lens group, a distance between the transparent display screen and the first lens group along the main optical axis of the first lens group is less than a focal length of the first lens group, such that, both a display image on the transparent display screen and an environmental image through the transparent display screen and the first lens group or through the first lens group can be observed at an observation position that is located on the main optical axis of the first lens group. Both the observation position and the first lens group are located at a same side of the transparent display screen, and the observation position is farther from the transparent display screen than the first lens group.

Abstract: A waveguide assembly integrated with sensing functions and an intelligent display wearable device are provided. The waveguide assembly includes: an exit pupil expansion waveguide structure and a plurality of reflective sheets. The reflective sheets are arranged at intervals in the exit pupil expansion waveguide structure and arranged obliquely with respect to a light-exiting surface of the exit pupil expansion waveguide structure. A first reflective film and a second reflective film are respectively arranged on two sides of each of the reflective sheets. The second reflective film is an infrared reflective film or an ultraviolet reflective film, and arranged on a side of the reflective sheet away from the light-exiting surface of the exit pupil expansion waveguide structure. The first reflective film is arranged on a side of the reflective sheet close to the light-exiting surface of the exit pupil expansion waveguide structure.

Abstract: A laminate including: a first ply having a first surface and a second surface, where the first surface is an outer surface of the laminate; a second ply having a third surface facing the second surface and a fourth surface opposite the third surface, where the fourth surface is an inner surface of the laminate; an interlayer between the plies; and an enhanced p-polarized reflective coating positioned over at least a portion of a surface of the plies. When the laminate is contacted with radiation having p-polarized radiation at an angle of 60° relative to normal of the laminate, the laminate exhibits a LTA of at least 70% and a reflectivity of the p-polarized radiation of at least 10%. A display system and method of projecting an image in a heads-up display is also disclosed.

Abstract: A wearable device includes a wearable element mounted on a head of a wearer, a display that displays an image in a part of a field of view of the wearer, an arm that holds the display, and a coupling element that couples the arm and the wearable element to each other. The coupling element includes a first rotation mechanism capable of rotating the arm around a first axis, and a second rotation mechanism that is provided closer to the wearable element than the first rotation mechanism is, and is capable of rotating the arm with a degree of freedom including rotation around a second axis and a third axis, the second axis being orthogonal to the first axis, the third axis being orthogonal to the second axis and intersecting with the first axis.

Abstract: According to one embodiment, a display device includes a display which emits display light, a retroreflective element which retroreflects incident light, an optical element including a lower surface opposing the display and the retroreflective element and an upper surface on an opposite side to the lower surface, which reflects part of the display light toward the retroreflective element and transmits reflection light retroreflected by the retroreflective element and a first blower mechanism which blows air to a side of the upper surface.

Abstract: An optical system for a head-worn computer includes an upper optical module adapted to convert illumination into image light by illuminating a reflective display through a field lens, wherein the image light is transmitted back through the field lens, then through a partially reflective partially transmissive surface and into a lower optic module adapted to present the image light to an eye of a user wearing the head-worn computer and the upper optical module being positioned within a housing for the head-worn computer and having a height of less than 24 mm, as measured from the reflective display to the bottom edge of the rotationally curved partial mirror.

Abstract: A display system for realizing concentric light field with monocular-to-binocular hybridization, and methods thereof. At least some embodiments include a display arranged to emit or transmit light rays based on image content from a content engine, and an optical subsystem arranged to configure the light rays into a concentric light field. The concentric light field provides a virtual image in a large, contiguous spatial region, such that each eye of the human viewer can detect monocular depth from the light field, to provide a large field of view.

Abstract: Peripheral-vision expanded images are streamed to a video streaming client. The peripheral-vision expanded images are generated from source images in reference to view directions of the viewer at respective time points. View direction data is collected and received in real time while the viewer is viewing display images derived from the peripheral-vision expanded images. A second peripheral-vision expanded image is generated from a second source image in reference to a second view direction of the viewer at a second time point. The second peripheral-vision expanded image has a focal-vision image portion covering the second view direction of the viewer and a peripheral-vision image portion outside the focal-vision image portion. The second peripheral-vision expanded image is transmitted to the video streaming client.

Abstract: A vehicle includes a light source configured to emit light. A substrate defines a surface. The surface integrally defines an optical grating. A light transmissive layer is positioned over the optical grating. The light source is configured to direct the light through the light transmissive layer to the optical grating.

Abstract: A virtual reality headset incorporating gradient refractive index (GRIN) lenses within the optical blocks thereof. Optical blocks of varying size and position are used. GRIN lenses are fabricated to fit within the optical block and are shaped to possess desired application-specific characteristics such as having one or more diffractive surfaces.

Abstract: A HUD including a projection display unit, a housing, a cover, a region detection unit, an object removing mechanism and an object removal control unit is provided. The projection display unit spatially modulates light emitted from a light source as image information and projects image light obtained from spatial modulation onto a windshield to display an image. The housing accommodates the projection display unit and has an opening portion through which the image light exits. The cover covers the opening portion. The region detecting unit detects an object adhesion region in which the object is adhered to the cover. The object removing mechanism removes an object adhered to a front surface of the cover by scraping the front surface of the cover. The object removal control unit activates the object removing mechanism when important display content is included in a portion of the image light, the portion being blocked.