Abstract: A display device includes a beam generator and a holographic optical waveguide. The beam generator includes a display and is configured to generate beams having image information displayed on the display. The holographic optical waveguide is configured to display an image of a second size at a position at a first distance behind the display device based on the beams having the image information, the second size is a multiple of the first size of the display, and the multiple is greater than 1.

Abstract: A display device includes a beam generator and a holographic optical waveguide. The beam generator includes a display and is configured to generate beams having image information displayed on the display. The holographic optical waveguide is configured to display an image of a second size at a position at a first distance behind the display device based on the beams having the image information, the second size is a multiple of the first size of the display, and the multiple is greater than 1.

Abstract: A logo device for a vehicle is disclosed. The logo device comprises a first shell including a transparent region forming a logo pattern and a nontransparent region and a second shell connected with the first shell. The first shell and the second shell form a sealed cavity therebetween. A bottom plate is disposed in the sealed cavity, and a light guide plate disposed between the bottom plate and the first shell. The light guide plate includes one or more grooves disposed thereon. A circuit board is disposed between the bottom plate and the second shell, including a plurality of illuminating elements thereon. The one or more grooves on the light guide plate receives the plurality of illuminating elements. The light guide plate is configured to direct at least a part of the light generated by the illuminating element toward the transparent region of the first shell.

Abstract: A logo device for a vehicle is disclosed. The logo device comprises a first shell including a transparent region forming a logo pattern and a nontransparent region and a second shell connected with the first shell. The first shell and the second shell form a sealed cavity therebetween. A bottom plate is disposed in the sealed cavity, and a light guide plate disposed between the bottom plate and the first shell. The light guide plate includes one or more grooves disposed thereon. A circuit board is disposed between the bottom plate and the second shell, including a plurality of illuminating elements thereon. The one or more grooves on the light guide plate receives the plurality of illuminating elements. The light guide plate is configured to direct at least a part of the light generated by the illuminating element toward the transparent region of the first shell.