Display system
A display system is provided. The display system includes a picture generation unit, a diffuser screen, and a curved mirror. The picture generation unit is configured to generate a real image and perform imaging on the diffuser screen. The diffuser screen is configured to perform diffuse reflection on the real image. The curved mirror is configured to perform imaging based on the real image obtained through diffuse reflection, to generate a magnified virtual image.
1 . A display system, comprising:
a picture generation unit;
a diffuser screen;
a curved mirror; and
a reflector configured to receive a light beam for imaging on the curved mirror and reflect the light beam back to the curved mirror,
wherein the curved mirror is further configured to receive the light beam reflected by the reflector, to perform magnification imaging,
wherein the picture generation unit is configured to generate a real image and perform imaging on the diffuser screen,
wherein the diffuser screen is configured to perform diffuse reflection on the real image, and
wherein the curved mirror is configured to perform imaging based on the real image obtained through diffuse reflection, to generate a magnified virtual image.
2 . The display system according to claim 1 , wherein the picture generation unit comprises:
a light source configured to emit light beams;
a prism configured to combine light beams emitted by the light source;
a lens configured to collimate a combined light beam and direct the combined light beam to an imaging chip that is configured to generate the real image; and
a projection lens configured to project the real image onto the diffuser screen.
3 . The display system according to claim 2 , wherein the picture generation unit further comprises a first diffractive optical element, the first diffractive optical element is located between the light source and the prism, and the first diffractive optical element is configured to split the light beams emitted by the light source.
4 . The display system according to claim 2 , wherein the picture generation unit further comprises a polarization processing element, and the polarization processing element is configured to adjust a polarization state of the light beam directed to the imaging chip.
5 . The display system according to claim 4 , wherein the polarization processing element is any one of the following elements: a polarization beam splitter (PBS), a quarter-wave plate, a half-wave plate, a polarizer, or a rotator.
6 . The display system according to claim 1 , further comprising:
a polarization film, wherein the polarization film is placed after the diffuser screen, and
the polarization film is configured to filter out interference light.
7 . The display system according to claim 1 , further comprising:
a black-and-white grating, a cylindrical lens array, or a microlens array, wherein the black-and-white grating, the cylindrical lens array, or the microlens array is located after the diffuser screen.
8 . The display system according to claim 1 , wherein the picture generation unit comprises a light source comprising a plurality of primary-color sub-light sources.
9 . The display system according to claim 8 , wherein the picture generation unit further comprises a first diffractive optical element, the first diffractive optical element comprises a plurality of sub-optical elements, and the plurality of sub-optical elements are separately placed before the plurality of primary-color sub-light sources.
10 . The display system according to claim 1 , wherein the diffuser screen is a reflection diffuser screen or a projection diffuser screen.
11 . The display system according to claim 1 , further comprising:
a diffuser film, located on a light-emitting side of the diffuser screen, wherein the diffuser film is configured to expand a transverse scattering angle of the real image obtained through diffuse reflection.
12 . The display system according to claim 1 , further comprising:
a cylindrical lens array disposed on a light-emitting side of the diffuser screen and covering pixels of the diffuser screen.
13 . A display system comprising:
a picture generation unit comprising:
a light source configured to emit light beams;
a prism configured to combine light beams emitted by the light source;
a lens configured to collimate a combined light beam and direct the combined light beam to an imaging chip configured to generate the real image; and
a projection lens configured to project the real image onto the diffuser screen;
a diffuser screen;
a curved mirror; and
a second diffractive optical element that is located after the curved mirror, and is configured to split a light beam reflected by the curved mirror,
wherein the picture generation unit is configured to generate a real image and perform imaging on the diffuser screen,
wherein the diffuser screen is configured to perform diffuse reflection on the real image, and
wherein the curved mirror is configured to perform imaging based on the real image obtained through diffuse reflection, to generate a magnified virtual image.
14 . A display system comprising:
a picture generation unit;
a diffuser screen;
a curved mirror; and
a Fresnel lens placed after the diffuser screen, wherein the Fresnel lens is configured to magnify a real image passing through the diffuser screen,
wherein the picture generation unit is configured to generate the real image and perform imaging on the diffuser screen,
wherein the diffuser screen is configured to perform diffuse reflection on the real image, and
wherein the curved mirror is configured to perform imaging based on the real image obtained through diffuse reflection, to generate a magnified virtual image.
15 . A display system comprising:
a picture generation unit;
a diffuser screen;
a curved mirror; and
a cylindrical lens array disposed on a light-emitting side of the diffuser screen and covering pixels of the diffuser screen,
wherein the picture generation unit is configured to generate a real image and perform imaging on the diffuser screen,
wherein the diffuser screen is configured to perform diffuse reflection on the real image, and
wherein the curved mirror is configured to perform imaging based on the real image obtained through diffuse reflection, to generate a magnified virtual image, and
wherein at least one cylindrical lens in the cylindrical lens array covers at least two columns of pixels of the diffuser screen.
16 . The display system according to claim 15 , wherein the at least one cylindrical lens in the cylindrical lens array covers three columns of pixels of the diffuser screen.
17 . The display system according to claim 15 , wherein a plurality of pixel columns covered by the at least one cylindrical lens in the cylindrical lens array separately display different pictures.
18 . A display system comprising:
a picture generation unit;
a diffuser screen;
a curved mirror; and
a first reflection element, located on an optical path between the picture generation unit and the diffuser screen,
wherein the picture generation unit is configured to generate a real image and perform imaging on the diffuser screen,
wherein the diffuser screen is configured to perform diffuse reflection on the real image, and
wherein the curved mirror is configured to perform imaging based on the real image obtained through diffuse reflection, to generate a magnified virtual image
wherein the first reflection element is configured to reflect, to the diffuser screen, the real image generated by the picture generation unit.
19 . A display system comprising:
a picture generation unit;
a diffuser screen;
a curved mirror; and
a second reflection element,
wherein the picture generation unit is configured to generate a real image and perform imaging on the diffuser screen,
wherein the diffuser screen is configured to perform diffuse reflection on the real image, and
wherein the curved mirror is configured to perform imaging based on the real image obtained through diffuse reflection, to generate a magnified virtual image,
wherein the second reflection element is located on an optical path between the curved mirror and the diffuser screen, and
wherein the second reflection element is configured to reflect, to the curved mirror, the real image obtained through diffuse reflection by the diffuser screen.