Display device
AssigneeAlps Alpine Co., Ltd.
InventorKatsunari Ashimine
Life of this patent
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Abstract
Implementations of a display device of the present disclosure include a transparent light guide plate in which a light guide plate image that is an original video of an aerial image is formed on a bottom portion, a light source configured to emit light L from a side portion of the light guide plate toward the inside of the light guide plate, a polarization beam splitter disposed in parallel with the light guide plate and above the light guide plate, a λ/4 plate disposed below the light guide plate, and a retroreflective member disposed in parallel with the light guide plate and below the λ/4 plate, which retroreflects the light guide plate image to display the aerial image.
Claims12
A display device configured to display a video in the air using retroreflection, the display device comprising:
- a transparent light guide plate including an original video of the video in the air;
- a light source configured to emit light from a side portion of the light guide plate toward the inside of the light guide plate;
- a polarization beam splitter disposed parallel to the light guide plate and above the light guide plate;
- λ/4 plate disposed below the light guide plate;
- and
- a retroreflective member disposed in parallel with the light guide plate and below the λ/4 plate,
- wherein the display device is configured to retroreflect the original video to display the video in the air.
Dependencies are inferred from the claim text.