An HUD includes a housing that accommodates a light modulation unit that spatially modulates light emitted by a light source; a projection optical system that is accommodated in the housing and projects the light that has been spatially modulated onto a windshield 2 through an opening portion K of the housing; a cover that closes the opening portion K; a separation member that is movable and is for separating a front surface of the cover into a plurality of regions; a driving unit; and an object detecting unit that detects an object approaching the front surface of the cover. The driving unit moves the separation member to a position on the cover to separate the cover into a plurality of regions when the object detecting unit detects an object, and leaves the separation member retracted from the position on the cover when an object is not detected.

The invention relates to a head-up display system, in particular in the form of a head-up display system for displaying graphical elements on the windshield (2) of a motor vehicle, with a projection unit (7) arranged in the area of the front vehicle dashboard (5) of the motor vehicle, which is configured to emit preferably p-polarized light rays (28) preferably in the direction of a part of the windshield (2) providing a projection surface (8), wherein the windshield (2) is configured to reflect the light rays emitted by the projection unit (7). To enable a flexible adjustability of the reflection angle of the light rays incident on the windshield, to prevent the occurrence of the ghost effect and to ensure a cost-effective production of the head-up display system and of the windshield, a nanostructure (30) formed of structural elements (32) is provided at least in the part of the windshield (2) providing the projection surface (8), wherein the structural elements (32) are inclined at an angle of inclination () in relation to a surface normal (N) of the windshield (2).

A head-up display for a vehicle may include a mirror system. The mirror system may include a mirror. The mirror may be rotatable about a first axis. For rotation about the first axis, the mirror system may include a first joint assembly spaced from a second joint assembly. The first joint assembly may include a bearing-ball joint aligned along a second axis. Additionally, the first joint assembly may include a mirror-ball joint aligned along the first axis. The mirror-ball joint may restrict movement of the bearing-ball joint to ensure that the first axis remains coaxial with the second axis.

A projection display device includes a display device, an optical system, and a shielding plate. The optical system includes a first mirror and a second mirror provided on the regular optical path, the second mirrors being to provide an optical path convergence point on the regular optical path, and the first mirrors being provided at a position corresponding to the optical path convergence point. The projection display device is configured such that a position of a mirror surface of the first mirror and the second mirror is adjustable in accordance with a position of an eye point of a user so as to project the light toward the projection position that corresponds to the position of the eye point. The shielding plate is provided such that the shieling plate does not interfere with the regular optical path and such that the shielding plate interferes with the different optical path.

A laminated glass includes a first glass plate; a second glass plate; and an intermediate film positioned between the first and second glass plates, and configured to be bonded to the first and second glass plates. The laminated glass includes a plurality of display areas used for a head-up display. The plurality of display areas include first and second display areas, on which virtual images having different image distances are displayed. At least one of the first and second display areas has a cross section having a wedge shape, in which a thickness of an upper edge is greater than that of a lower edge. Average wedge angles of the first and second display areas are different from each other. The first and second display areas are arranged with a predetermined distance therebetween in a vertical direction along the laminated glass, when the laminated glass is installed in a vehicle.

A display device has a movable screen that is movable in a movement direction, a drive controller, a projector, and a position detector. The drive controller moves the movable screen relative to a reference position set at a prescribed position in a movement range of the movable screen. The projector performs drawing on the movable screen by irradiating the movable screen with light used for scanning the movable screen and projects a virtual image onto a target space based on light that passes through the movable screen. The position detector executes position detection processing for detecting that the movable screen is located at a detection position set in relation to the prescribed position. The position detector moves the movable screen and executes the position detection processing in a non-display period in which the movable screen is not irradiated with light from the projector.

A head-up display system for a motor vehicle includes a projection unit for providing a display image; a transparent, holographic optical fiber display panel for outputting, on a display surface, a display image that is coupled into the display panel via a coupling-in region; and a guide device designed to move the display panel between an operational position and a parked position.

It is an object of the present invention to provide a projection optical system having a minimal optical configuration while ensuring necessary capabilities and a head-up display device having a tilted virtual image plane. The head-up display device according to the present invention includes an image forming unit to emit image light containing image information and an eyepiece optical system to display a virtual image by reflecting the image light. While a virtual image plane is tilted to display a virtual image in a range from a far distance to a near distance, a point on the image forming unit conjugating to a far point on the virtual image plane is optically farther from a light flux entering the image forming unit than a point on the image forming unit conjugating to a near point on the virtual image plane.

The embodiments disclosed in this application describe a displaying system, a displaying method, and a head-up display. The heads-up displaying system includes a display window including a transflective film, an image source emitting light incident on the imaging window, and the light emitted by the image source before reaching the transflective film only comprising s-polarized light. The transflective film is configured to directly reflect a first portion of the s-polarized light emitted from the image source. The transparent substrate reflects a second portion of the s-polarized light, and transmits a third portion of the s-polarized light to the air, the first portion of the s-polarized light, the second portion of the s-polarized light and the third portion of the s-polarized light are all s-polarized light.

A display device includes a display configured to display a video, a concave mirror configured to reflect a video display light of the video displayed on the display toward a reflection part that is formed in a curved shape and that faces a viewer, and a housing in which the display and the concave mirror are assembled, wherein an angle of the concave mirror with respect to the housing is adjustable by rotating the concave mirror on a reference plane of the housing in accordance with a relative positional relationship among the housing, the reflection part, and the viewer.