A head-up display apparatus projects a virtual image to be perceived by a user onto a virtual image display part provided in front of the user. The head-up display apparatus includes a display light emitting unit and a display light reflection unit. The display light emitting unit emits display light. The display light reflection unit reflects the display light and emits the reflected display light. The display light reflection unit includes a mirror part having a concave shape and a transmissive-type volume hologram part provided on a surface of the mirror part.

A device configured for displaying a side view of a vehicle includes a sensor assembly configured for obtaining vehicle speed information of the vehicle and a surrounding region image of the vehicle, a processor that generates a projection image to be displayed to a user based on the surrounding region image, and sets a projection position where the projection image is displayed based on the vehicle speed information, and a head up display for displaying the projection image at the projection position under control of the processor.

A head-up display system includes an eye-box having a first and second dimension, an image projector including a picture generating unit and an optical system, and a movement assembly. The picture generating unit includes a spatial light modulator arranged to spatially modulate light in accordance with a hologram. The optical system relays the spatially modulated light to an optical combiner. The movement assembly moves at least a portion of the image projector rectilinearly between a plurality of positions such that at least one component of the picture generating unit is moved together with the optical system. Spatially modulated light relayed to the optical combiner forms a virtual image viewable from a sub-eye-box having a position in the first dimension being dependent on the position of the at least a portion of the image projector. The eye-box is the sum of the sub-eye-boxes associated with each of the plurality of positions.

Image contents are displayed with a spatial impression of depth for interaction with image contents displayed on a display device in a transportation vehicle, the image contents having control elements in more than one depth plane. An operating action by a user is detected by at least one sensor provided in the transportation vehicle, and it is determined in which depth plane an operating element should be operated. An interaction with a displayed operating element takes place in the determined depth plane according to the detected operating action. A touch screen is provided for the operating action of the user wherein the level of pressure exerted by the user is detected and the user interacts with operating elements in different depth planes based on the detected pressure level. Alternatively, a gesture sensor is provided for the operating action by the user.

A system and method for Original Equipment Manufacturer (OEM) hard wired in-vehicle infotainment system software or firmware, Emergency Lighting and Siren Application, to activate all emergency lighting and sirens, using only OEM communication networks and OEM modules, while maintaining OEM operation that meets lighting and control functions in accordance with the National Highway and Safety and Transportation Administration (NHSTA) Federal Motor Vehicle Safety Standards (FMVSS) and Electronic Code of Federal Regulations (e-CFR).

A position in a left-right direction of a display position of a facility figure representing a facility is set to a position overlapping with a virtual line parallel to a traveling lane as viewed from a driver (c). A position in an up-down direction of the display position is determined to be a position overlapping with a road surface on the front side, the position separated upward by H1 from a lower end of a display area of a heads-up display when a distance L from a current position CP to a position TP of a facility is a distance ThL (b1), to be a position separated by H4 (H4<h1) when the distance L is zero, and such that distances H2 and H3 separated upward from the lower end of the display area gradually change from the distance H1 to the distance H4 as the distance L decreases from the distance ThL to zero (b2 and b3). The distance H1 is set such that the facility figure is displayed below a point facing the facility on the road surface on the front side when the distance L is the distance ThL.

According to an aspect of the present disclosure, a heads-up display device includes a display unit which outputs a 3D image and at least one holographic optical element which is attached to a windshield of the vehicle to diffract and reflect the 3D image output from the display unit so that a reflection efficiency of the 3D image may be improved while minimizing a module volume.

A display device for a vehicle displays an image at the time of seeing a three-dimensional object for distortion correction formed in a virtual space, from a reference eye point of a driver, on a display, as a display image. A controller performs texture mapping by pasting an original display image to the three-dimensional object for distortion correction, in the virtual space, and adjusts the three-dimensional object for distortion correction, according to a positional change between the reference eye point and an actual eye point. An adjustment unit changes a position of the three-dimensional object for distortion correction from a reference position, according to the positional change.

A method for holographic display calibration using phase modulation includes projecting an initial graphic on a windshield of a vehicle, capturing an image of the initial graphic with a camera inside a vehicle, determining a loss function value between the image of the initial graphic captured by the camera and a target graphic, modulating a phase of a light beam generating the initial graphic using the loss function value to generate an updated graphic, and displaying the updated graphic on the windshield of the vehicle.

A method of controlling vehicle driving, when a plurality of occupants is in the vehicle, by implementing components required for vehicle driving control as holographic images to ensure a maximum space in an autonomous vehicle, may include steps of requesting, by a first occupant currently having no driving control authority, a transfer of the authority by use of a holographic image, accepting, by a second occupant currently having the driving control authority, the transfer of the authority by use of the holographic image, selecting, by the first occupant, a mode by use of the holographic image based on the acceptance by the second occupant, and performing vehicle control in accordance with the mode selected by the first occupant, and the holographic images in the respective steps are displayed to the occupants wearing an HMD device.