A vehicle display device includes a display that emits a display image to be projected onto a windshield provided to a vehicle, as display light, at least one reflecting mirror that is disposed on an optical path of the display light from the display to the windshield and reflects the display light, an optical sensor that detects external light (SL) incident from an opening through which an outside and an internal space are communicated with each other, a temperature sensor that detects a temperature of the display, a dimming member that is disposed on the optical path of the display light, and a controller that causes the dimming member to be switched between a state with a first transmissivity and a state with a second transmissivity smaller than the first transmissivity.

A head-up display system includes a first projection module, a second projection module, and a first reflective optical element. The first projection module projects a first image. The second projection module projects a second image. The first reflective optical element reflects at least a part of the first image and at least a part of the second image. The first projection module includes a first display panel that displays the first image and projects the first image toward the first reflective optical element. The second projection module includes a second display panel that displays the second image, and an optical system that directs the second image toward the first reflective optical element.

A head up display system presents a virtual image to a human driver of a motor vehicle. A picture generation unit includes a printed circuit board having at least one light emitting device emitting light from a surface of the printed circuit board. The surface has an optically reflective coating. A liquid crystal display receives the emitted light and reflects a portion of the received emitted light back to the printed circuit board. The optically reflective coating of the printed circuit board reflects the light reflected by the liquid crystal display back to the liquid crystal display. At least one mirror reflects light passed by the liquid crystal display toward a windshield of the motor vehicle such that the light is reflected by the windshield and is visible to the human driver as the virtual image.

There are provided a reflection film, a windshield glass, and a head-up display system capable of suppressing formation of double images of a display image. The reflection film has a linearly polarized light reflection layer in which optically anisotropic layers and isotropic layers are laminated and a polarization converting layer, and the polarization converting layer satisfies any of conditions below. (A) The polarization converting layer is a retardation layer in which the front retardation is 30 nm to 200 nm and the angle between a slow axis direction and a direction of the transmission axis of the linearly polarized light reflection layer is 35° or less. (B) The polarization converting layer is a layer in which a helical alignment structure of a liquid crystal compound is fixed, and the number of pitches x in the helical alignment structure and the film thickness y (unit .Math.m) of the polarization converting layer satisfy all relational expressions below.

$0.1\le \text{x}\le \text{1}\text{.0}$

$0.5\le \text{y}\le \text{3}\text{.0}$

$3000\le (1560\times \text{y)/x}\le \text{50000}$

A vehicle display control device includes a memory and a processor coupled to the memory. The vehicle display control device is configured such that the processor controls a vehicle display device for displaying an image on a display region so as to be superimposed on a portion of a view ahead of a vehicle. The processor is configured so as to detect a preceding vehicle traveling at a vehicle front side of a host vehicle, and in cases in which the preceding vehicle has been detected, causes an image that includes a plurality of inter-vehicle marker objects from the host vehicle side toward the preceding vehicle side to be displayed in the display region, and causes sequential emphasis display of the plurality of inter-vehicle marker objects in sequence from the host vehicle side toward the preceding vehicle side.

A vehicle display device, includes: a curve information acquisition section configured to acquire information relating to a degree of curvature of a travel lane; a deceleration determination section configured to determine whether or not deceleration of a vehicle is required based on the degree of curvature of the travel lane and a vehicle speed; and a marking display section configured to, in a case in which deceleration is required, cause a display device to display a predetermined first marking superimposed along the travel lane at a display region inside a vehicle cabin.

A head-up display device and a transportation device are provided. The head-up display device includes a light source, a scanner configured to scan light emitted from the light source to form scanned light, an angle adjuster configured to change an exit angle of the scanned light, a display unit configured to form an image according to the scanned light from the angle adjuster, and a projection assembly configured to project the image formed on the display component to a selected area.

A mirror holding structure includes a mirror holder that holds a mirror with an adhesive member having elasticity interposed therebetween. The mirror holder includes an elastic part that is in contact with the mirror and elastically deforms. A spring constant of the elastic part is greater than a spring constant of the adhesive member.

An electronic device attachable to a vehicle, according to various embodiments of the present invention, comprises: a communication interface; a memory for storing instructions; and at least one processor connected to the communication interface and the memory, wherein the at least one processor can be configured so as to execute the stored instructions in order to: acquire, from another device embedded in the vehicle, information on a plurality of objects located within a designated distance from the vehicle; identify, among the plurality of objects, a designated object located within a designated distance from the vehicle; generate configuration information of at least one piece of content to be displayed through a head-up display (HUD), on the basis of a state of the designated object; and display, through the HUD, content for guiding the operation of the vehicle, on the basis of the generated configuration information.

An information display apparatus and an information display method configured to display video information of a virtual image on a windshield of conveyance is provided. The information display apparatus includes: a display configured to display the video information; and a virtual image optical system configured to display a virtual image at a front of the conveyance by reflecting light emitted from the display by means of the windshield. The virtual image optical system includes a concave mirror and an optical element. A reflective film is formed on a reflecting surface of the concave mirror. A protective film for preventing moisture absorption is formed on a facing surface. By forming end surfaces of the two surfaces as a curved surface or an inclined surface and forming them on the end surfaces to block moisture, moisture absorption of plastic is prevented.