A display device includes a transparent display screen element, which has a front side and a rear side opposite to the front side, and a polarizing element arranged flatly on the rear side of the transparent display screen element. The polarizing element is to attenuate light output by at least one lighting element of the transparent display screen element. A motor vehicle may have such a display device, in particular where the display device may be arranged freestanding at or on an interior trim element of the motor vehicle.

There are provided a linearly polarized light reflection film that has a high visible light transmittance, is capable of increasing the brightness of a display image, and is highly transparent in terms of appearance tint, a windshield glass, and a head-up display system. The linearly polarized light reflection film has a selectively reflecting layer in which an optically anisotropic layer and an isotropic layer are laminated. The selectively reflecting layer has at least one first reflection peak having a reflection center wavelength of 430 nm or more and less than 500 nm and having a reflectivity of 10% or more and 20% or less, at least one second reflection peak having a reflection center wavelength of 530 nm or more and less than 600 nm and having a reflectivity of 10% or more and 20% or less, and a third reflection peak having a reflection center wavelength of 600 nm or more and 800 nm or less, where two or more reflection peaks are present with a reflectivity of 10% or more and 20% or less or one reflection peak is present with a reflectivity of 10% or more and 20% or less and a wavelength width of 120 nm or more.

The purpose of the present invention is to provide a head-up display having enhanced evenness of display image luminance. This head-up display is provided with: a backlight unit having a light source, the backlight unit emitting illumination light; a liquid crystal display element for displaying an image, the image being irradiated by the illumination light, whereby the liquid crystal display element emits display light; a control means for controlling the illuminance of the backlight unit and display by the liquid crystal display element; a housing having an opening through which the display light passes, the housing housing the liquid crystal display element and the backlight unit; and a cover glass for reflecting and/or transmitting in at least one location in a display light path and projecting the reflected and/or transmitted display light.

An interlayer film for laminated glass of the present invention is an interlayer film for laminated glass, comprising one or two or more resin layers, and comprising a first resin layer comprising a resin and a light diffusion particle, in which any resin layer in the interlayer film for laminated glass comprises a colorant.

A projection assembly for a head-up display (HUD), includes a windshield, including outer and inner panes that are joined to one another via a thermoplastic intermediate layer and having an HUD region; and a projector aimed at the HUD region. The radiation of the projector is predominantly p-polarised, and the windshield is provided with a reflection coating that is suitable for reflecting p-polarised radiation. The reflection coating has exactly one electrically conductive layer based on silver, a lower dielectric layer or layer sequence whose refractive index is at least 1.9 is arranged beneath the electrically conductive layer, an upper dielectric layer or layer sequence whose refractive index is at least 1.9 is arranged above the electrically conductive layer, the ratio of the optical thickness of the upper dielectric layer or layer sequence to the optical thickness of the lower dielectric layer or layer sequence is at least 1.7.

According to one embodiment of the invention, a display device having a first region adjacent to a transflective object in a vehicle, comprising: a first light emitting unit disposed in the first region; and a light controlling means disposed on a route that a first light and a second light emitted from the first light emitting unit propagate, through which the first light is controlled to propagate out of the display device at a first angle ranged from 30 degrees to 45 degrees and toward the transflective object and the second light is controlled to propagate out of the display device at a second angle ranged from 0 degrees to 5 degrees; wherein a first ratio of a light intensity of the first light to that of the second light is less than or equal to 14%.

A heads up display (HUD) includes a display source for emitting an emitted image, a windshield and an absorbing polarizer. For substantially normally incident light, the absorbing polarizer substantially transmits the incident light polarized along a pass direction, and substantially absorbs the incident light polarized along a block direction. The emitted image includes at least one image ray that is received and transmitted by the absorbing polarizer toward the windshield at a first location of the absorbing polarizer. The transmitted image ray is received and reflected by the windshield at a second location of the windshield. A first normal line of the absorbing polarizer at the first location is substantially parallel to a projection of the transmitted image ray onto the windshield. Further, the pass direction of the absorbing polarizer at the first location is substantially parallel to a second normal line of the windshield at the second location.

A display system is provided. The display system includes a windshield, a picture generation unit (PGU), and an optical element, where the windshield includes a first windshield surface and a second windshield surface. The PGU projects a light beam corresponding to a picture generated by the PGU to the optical element. The optical element directs the light beam to the first windshield surface. The first windshield surface refracts the light beam to the second windshield surface, and reflects the light beam to a human eye for receiving. The first windshield surface refracts a light beam reflected from the second windshield surface to the human eye for receiving. After reflection by the first windshield surface, the light beam forms a first virtual image with the picture. After reflection by the second windshield surface and refraction by the first windshield surface, the light beam forms a second virtual image with the picture.

A floating-information display includes a first quarter-wave retarder disposed on a side of an optical plate. A reflective polarizer is disposed between the first quarter-wave retarder and the optical plate. A first display is configured to transmit a first image along a first axis through the first quarter-wave retarder to the reflective polarizer. The reflective polarizer redirects the first image along a second axis through the first quarter-wave retarder toward a viewer. The first image appears to the viewer to be oriented normal to the second axis and at a first location. A second display is configured to transmit a second image to the optical plate. The second image is transferred through the first quarter-wave retarder along the second axis toward the viewer. The second image appears to the viewer to be oriented normal to the second axis and at a second location.

A light guide unit includes a first phase shifter disposed on the optical path to convert the display light as the linear polarized light from the projection unit into a circularly polarized light and including a reflection surface directed to the projection member and capable of reflecting a light from the projection member side to the projection member, a second phase shifter disposed on the projection member side of the first phase shifter on the optical path and giving a ¼ wavelength phase difference to the display light converted into the circularly polarized light by the first phase shifter to convert the display light into a linear polarized light, and a linear polarizer on the projection member side of the second phase shifter on the optical path. The linear polarizer guides the display light converted into the linear polarized light by the second phase shifter toward the projection member.