A vehicle display device includes a controller that controls an image projection unit on the basis of acquired information regarding a vehicle and information on a face orientation and eye point of a driver acquired from an image analysis unit to perform a display image control for displaying a virtual image at a predetermined position in a virtual image display region. In a case where the acquired information regarding the vehicle is state change information, the controller performs a display image control for a display image displayed by the image projection unit so that a state change virtual image S1 corresponding to the state change information is displayed in the same display form in both of a right monocular viewing region and a left monocular viewing region at the same time.

In one general aspect, a binocular anaglyph head mounted display (HMD) device can include a first monocular including a first display device and a first optical system. The first display device can be a single color display device configured to display image content on the first display device in a first color. The binocular anaglyph head mounted display (HMD) device can include a second monocular including a second display device and a second optical system. The second display device can be a two color display device configured to display image content on the second display device in a second color that is chromatically opposite to the first color.

There is provided a display system used for a head mounted display including a head mounted device having a lens for guiding image light to an eye of a user and configured to be mounted on a head of the user and a portable terminal having an imaging unit for photographing a front of a display surface and capable of being housed in the head mounted device. The display system includes a display control section configured to display a moving image on the display surface, an image information obtaining section configured to obtain image information photographed by the imaging unit, and a position information obtaining section configured to obtain position information of an optical axis of the lens on the display surface on the basis of position information of at least two reference positions whose relative positions with respect to the optical axis are determined in advance, the at least two reference positions being included in the image information. The display control section displays the moving image in a region of the display surface according to the position information of the optical axis.

A head-mounted virtual reality (VR) viewer includes a housing to removably incorporate a portable user device having a touchscreen associated with a display panel, and includes a set of conductive contacts positioned in the housing so as to trigger corresponding touch events at the touchscreen of the portable user device when incorporated at the housing. The portable user device is to detect a location on the touchscreen for each touch event triggered by a conductive contact, determine an orientation of the display panel relative to the housing based on the one or more detected locations of touch events, and configure at least one display operation of the portable user device based on the determined orientation.

Virtual reality headsets capable of accommodating display devices of a plurality of shapes and sizes are provided herein. In a first embodiment, the virtual reality headset may include a buckle, a fastening engagement face, and an elastic strap with a fastening mechanism on a distal end. The elastic strap may be configured to be threaded through the buckle and the fastening mechanism may be configured to be detachably attached to the fastening mechanism engagement face to secure a display device to the virtual reality headset. In a second embodiment, the virtual reality headset may include a first fastening stud, a second fastening stud, and an elastic strap with a first line of holes and a second line of holes. The first and second lines of holes may be configured to be secured, respectively, to the first and second fastening studs to secure a display device to the virtual reality headset.

A head-mounted display device is provided. The head-mounted display device includes: a frame having one surface formed to face a user's face; a wearing part formed to be coupled to at least a part of the frame so as to allow the frame to be fixed to the face; a mounting part formed in a cavity structure so that an external electronic device is capable of being mounted on the other surface of the frame; and one or more fastening parts that fix the external electronic device to the mounting part, wherein the fastening parts has an inclined opening angle.

A portable folding virtual reality glasses with adjustable focus having a headband, a first supporting piece, a second supporting piece, an accordion folding piece and an eyeshade component, inner and outer sides of the headband are adhered and connected. A terminal supporting plate is provided between the front of the headband and the first supporting piece. A first supporting piece eyehole is provided at the front of the first supporting piece. When the virtual reality glasses is unfolded, the back ends of the first supporting piece extend to the eyeshade component and adhere to the eyeshade component. The inner side of the first supporting piece is provided with the second supporting piece. The accordion type folding piece is provided between the second supporting piece and the eyeshade component. The virtual reality glasses can be completely folded through the accordion type folding piece, compressing the size in the folded state to the minimum for easy carrying. The virtual reality glasses also has a reliable structure and is comfortable to wear. It can effectively avoid a light break-in and is advantageous for promotion.

An optical film, a manufacturing method thereof and a display device are provided. The optical film includes a photonic crystal film substrate and a plurality of linear defective portions penetrating the photonic crystal film substrate in a thickness direction in the photonic crystal film substrate. A lattice period of each of the linear defective portions is different from a lattice period of the photonic crystal film substrate, and the photonic crystal film substrate includes a plurality of first regions and a plurality of second regions. The first regions and the second regions are alternately distributed along at least one direction in a plane where the photonic crystal thin film is located. The linear defective portion located in each of the first regions has a first light exiting direction. The linear defective portion in each of the second regions has a second light exiting direction.

A 3D display apparatus and method that address the vergence-accommodation conflict. A display screen component includes a display screen pixel array adapted to display a display screen image, a microlens imaging component including an array of microlenses corresponding to the display screen pixel array that can form a virtual or a real image of the display screen image, and a controllable movement component coupled to the imaging component or the display screen, wherein the imaging component and the display screen are controllably movable relative to each other, further wherein upon a controlled movement of the imaging component relative to the display screen, a location of the virtual or the real image along an optical axis is controllably changed.

A display device having a viewing window on a viewing plane is described. The display device comprises a picture generating unit, a first waveguide pupil expander and a second waveguide pupil expander. The picture generating unit is arranged to display a picture on a display plane. The picture is a holographic reconstruction formed from a hologram of the picture. The first waveguide pupil expander comprises an input port arranged to receive light of the picture and to expand a first exit pupil thereof in a first dimension. The second waveguide pupil expander comprises an input port arranged to receive light of the picture and to expand a second exit pupil thereof in the first dimension. The first dimension corresponds to a dimension of the viewing window. A method of expanding a viewing window of a display device is also described.