A head-up display device includes a housing, a projection unit projecting light representing an image, and an optical unit leading the light projected from the projection unit to a windshield of a vehicle. The optical unit includes a magnifying optical unit attached to the housing and reflecting the light toward the windshield, a screen attached to the housing and reflecting or transmitting the light toward the magnifying optical unit, and an incident angle changing unit changing an incident angle of the light that goes incident on the screen.

According to one embodiment, when displaying an image on a display panel, projecting an image which is displayed on the display panel, inclining the image which is projected from the display panel at a predetermined angle of bend, and reflecting the image which is projected from the display panel via a prism and guiding the image to a projection surface, a display device corrects input picture image of the prism based on characteristics contrary to the chromatic aberration characteristics of the prism.

An HUD system, includes at least one first HUD device, namely an AR-HUD device, with at least one first image source for displaying a first image produced by at least one hologram in a first display section of a display region and at least one second HUD device with at least one second image source for displaying a second image produced using geometric projection optics in a second display section of the display region.

An external vehicle notification information system may include a projector illuminating generated information using a light source, a lens transmitting the information, a reflector reflecting partial information of the information toward the lens, and a screen displaying the partial information transmitted from the lens.

A head up display arrangement is fix a motor vehicle having a human driver. A light source emits a light field including a first color such that the light field is visible to the driver as a virtual image. A light sensor detects a second color that is visible to the driver in a forward direction of the vehicle in an ambient environment outside of the vehicle. An electronic processor is communicatively coupled to both the light source and the light sensor. The processor changes the first color in the light field to a third color. The third color is dependent upon the second color.

The present invention implements a more compact head-up display device and improves mountability on a vehicle. A first mirror causes first display light generating an upper end of a virtual image display plane to intersect with second display light generating a lower end of the virtual image display plane between the first mirror and a second mirror. The first mirror is formed such that the width of a first reflection area for reflecting the first display light is shorter than the width of a second reflection area for reflecting the second display light. The second mirror is formed such that the width of a third reflection area for reflecting the first display light is shorter than the width of a fourth reflection area for reflecting the second display light.

A head-up display device projects a virtual image. The head-up display device includes a display, a first optical member, a second optical member, and an adjuster. The display outputs light that becomes a display image corresponding to the virtual image. The first optical member reflects the light incident from the display. The second optical member reflects or transmits the light reflected by the first optical member such that the virtual image is projected. The adjuster moves the first optical member to adjust a projection distance of the virtual image. The adjuster changes a distance between the first optical member and the second optical member and an inclination angle of the first optical member with respect to the display according to the projection distance of the virtual image.

An illuminated pointer cap for an vehicle instrument panel outputs different colors from a white light source by directing the white light through different color filters. The white light is transmitted through a light-conductive substrate and reflected to the color filters by triangular-shaped undercuts formed in one side of the substrate that is opposite the color filters.

A display device includes: a light projection device configured to project light; an optical mechanism configured to be able to adjust an optical distance to a virtual image; a concave mirror configured to reflect light toward a reflector; a first actuator configured to adjust the optical distance; a second actuator configured to adjust a reflection angle of the concave mirror; and a control device configured to determine a target optical distance and a target reflection angle based on a vehicle state or a situation around a vehicle, control the first actuator such that the optical distance approaches the target optical distance, and control the second actuator such that the reflection angle approaches the target reflection angle. The control device performs predetermined control such that the virtual image becoming a double image when the target optical distance is equal to or less than a predetermined distance is curbed.

A display device includes a light projection device which projects light including an image, an optical mechanism which is capable of adjusting a distance from a predetermined position to a position where the light is formed as a virtual image, a concave mirror which reflects light toward a reflector, a concave mirror actuator which adjusts a reflection angle of the concave mirror, and a control device which controls the light projection device and the concave mirror actuator, in which the control device adjusts a projection position on a projection surface of the light projected from the light projection device having an angle formed by a horizontal surface passing through a predetermined position on an image and a segment from the predetermined position to a position where the light is formed as a virtual image so as to curb fluctuation occurring due to movement of a vehicle.