Display device
A display device includes a video element and a parallax optical element. The video element projects, onto a windshield, a stereoscopic vision image in which a plurality of rectangular left-eye images and a plurality of rectangular right-eye images are alternately arrayed in a first array pattern. The parallax optical element is provided between the video element and the windshield and includes a plurality of separation parts arrayed in a lattice-like fashion and in a second array pattern; the separation parts separating the stereoscopic vision image into the left-eye images and the right-eye images. At least one of the first array pattern and the second array pattern is a nonuniform array pattern that conforms to a curved surface of the windshield.
1. A display device comprising:
a video projector that projects, onto a windshield, a stereoscopic vision image in which a plurality of rectangular left-eye images and a plurality of rectangular right-eye images are alternately arrayed in a first array pattern; and
a parallax optical element including a plurality of separation parts arrayed in a lattice-like fashion and in a second array pattern, the separation parts separating the stereoscopic vision image into the left-eye images and the right-eye images, the parallax optical element being provided between the video projector and the windshield,
wherein:
at least one of the first array pattern and the second array pattern is a nonuniform array pattern that conforms to a curved surface of the windshield; and
a radius of curvature of the windshield depends on at which position the stereoscopic vision image is projected onto the windshield.
2. The display device according to claim 1 , wherein
an interval between adjacent two separation parts of the plurality of separation parts is widened in proportion to a decrease in radii of curvature of the windshield at positions optically opposing the adjacent two separation parts.
3. The display device according to claim 1 , wherein
a width of the left-eye images and the right-eye images in an array direction is narrowed in proportion to a decrease in radii of curvature of the windshield at positions onto which the left-eye images and the right-eye images are projected.
4. The display device according to claim 1 , wherein
at least one of the plurality of separation parts is curved.
5. The display device according to claim 1 , wherein
at least one of the left-eye images and the right-eye images is curved.
6. The display device according to claim 1 , wherein
each of the separation parts is a slit or a lens.
7. The display device according to claim 1 , further comprising a detector that detects positions of a user's left eye and a user's right eye,
wherein at least one of the first array pattern and the second array pattern is changed based on the positions detected by the detector.