Method and projector for projecting an image onto a projection surface
A method for simultaneously projecting two images onto a projection surface may include generating a first and second illumination beam based on first and second image data, which are representative of a first and second image, wherein the first illumination beam has electromagnetic radiation having a first property, wherein the second illumination beam has electromagnetic radiation having a second property, which differs from the first property, and deflecting the first and second illumination beams toward the projection surface so that the first illumination and second beam generates a first and second beam spot on the projection surface, respectively, wherein the first and second beam spot is moved over the projection surface so that with the aid of the first and second beam spot, the first and second image are displayed for a first and second observer on the surface, respectively, and the second image is superimposed on the first image.
1. A method for simultaneously projecting two images onto a projection surface, the method comprising:
generating a first illumination beam in dependence on first image data, which are representative of a first image, wherein the first illumination beam has electromagnetic radiation having a predefined first property;
generating a second illumination beam in dependence on second image data, which are representative of a second image, wherein the second illumination beam has electromagnetic radiation having a predefined second property, which differs from the first property; and
deflecting the first and second illumination beams toward the projection surface so that the first illumination beam generates a first beam spot on the projection surface and the second illumination beam generates a second beam spot on the projection surface, wherein the first beam spot is moved over the projection surface so that with the aid of the first beam spot, the first image is displayed for a first observer on the projection surface, and the second beam spot is moved over the projection surface so that with the aid of the second beam spot, the second image is displayed for a second observer on the projection surface, superimposed on the first image.
2. The method as claimed in claim 1 , wherein colored illumination light of a first color space is used as electromagnetic radiation having the predefined first property and wherein colored illumination light of a second color space, which differs from the first color space, is used as electromagnetic radiation having the predefined second property.
3. The method as claimed in claim 2 , wherein the first and the second color spaces are selected so that the same white spot is displayable using both color spaces.
4. The method as claimed in claim 1 , wherein electromagnetic radiation having a first polarization is used as electromagnetic radiation having the predefined first property and wherein electromagnetic radiation having a second polarization, which differs from the first polarization, is used as electromagnetic radiation having the predefined second property.
5. The method as claimed in claim 1 , wherein the two beam spots are projected superimposed on one another on the projection surface.
6. The method as claimed in claim 1 , the method further comprising:
generating a third illumination beam in dependence on third image data, which are representative of a third image, wherein the third illumination beam has electromagnetic radiation having a predefined third property, which differs from the first and second properties; and
deflecting the third illumination beam toward the projection surface so that the third illumination beam generates a third beam spot on the projection surface, wherein the third beam spot is moved over the projection surface so that, with the aid of the third beam spot, during the display of the first and second images for the first and the second observers, the third image is displayed for a third observer on the projection surface, superimposed on the first and the second images.
7. A projector for simultaneously projecting two images onto a projection surface, the projector comprising:
a first illumination arrangement, which generates a first illumination beam in dependence on first image data, which are representative of a first image, wherein the first illumination beam has electromagnetic radiation having a predefined first property;
a second illumination arrangement, which generates a second illumination beam in dependence on second image data, which are representative of a second image, wherein the second illumination beam has electromagnetic radiation having a predefined second property, which differs from the first property; and
a deflection device, which is implemented so that it deflects the first and the second illumination beams toward the projection surface so that the first illumination beam generates a first beam spot on the projection surface and the second illumination beam generates a second beam spot on the projection surface, wherein the first beam spot is moved over the projection surface so that with the aid of the first beam spot, the first image is displayed for a first observer on the projection surface, and the second beam spot is moved over the projection surface so that with the aid of the second beam spot, the second image is displayed for a second observer on the projection surface, superimposed on the first image.
8. The projector as claimed in claim 7 , wherein the first illumination arrangement is implemented so that it generates electromagnetic radiation of a first color space, and wherein the second illumination arrangement is implemented so that it generates electromagnetic radiation of a second color space, which differs from the first color space.
9. The projector as claimed in claim 8 , wherein the first illumination arrangement comprises:
a first radiation source, which is implemented so that it generates electromagnetic radiation of a first wavelength range,
a second radiation source, which is implemented so that it generates electromagnetic radiation of a second wavelength range,
a third radiation source, which is implemented so that it generates electromagnetic radiation of a third wavelength range, wherein the electromagnetic radiation of the first, second, and third wavelength ranges spans the first color space; and
wherein the second illumination arrangement comprises:
a fourth radiation source, which is implemented so that it generates electromagnetic radiation of a fourth wavelength range,
a fifth radiation source, which is implemented so that it generates electromagnetic radiation of a fifth wavelength range,
a sixth radiation source, which is implemented so that it generates electromagnetic radiation of a sixth wavelength range, wherein the electromagnetic radiation of the fourth, fifth, and sixth wavelength ranges spans the second color space.
10. The projector as claimed in claim 7 , wherein the first illumination arrangement generates electromagnetic radiation of a first polarization and wherein the second illumination arrangement generates electromagnetic radiation of a second polarization, which differs from the first polarization.
11. The projector as claimed in claim 10 , wherein the first illumination arrangement has a first polarization filter for generating the electromagnetic radiation of the first polarization and wherein the second illumination arrangement has a second polarization filter for generating the electromagnetic radiation of the second polarization.
12. The projector as claimed in claim 7 , wherein the deflection device has a first deflection unit for deflecting the first illumination beam and a second deflection unit for deflecting the second illumination beam.
13. The projector as claimed in claim 9 , wherein in each case one of the wavelength ranges of the first color space in a wavelength spectrum is adjacent to one of the wavelength ranges of the second color space, wherein the electromagnetic radiation of the two adjacent wavelength ranges has the same color, and wherein the radiation sources, which generate the electromagnetic radiation of the corresponding wavelength ranges, are arranged adjacent to one another.
14. The projector as claimed in claim 13 , further comprising multiple optical elements for deflecting and/or guiding the illumination beams to the deflection device, wherein the optical elements are implemented and arranged so that the illumination beams of two adjacent radiation sources are deflected and/or guided via the same optical elements to the deflection device.
15. The projector as claimed in claim 7 , further comprising:
a third illumination arrangement, which generates a third illumination beam in dependence on third image data, which are representative of a third image,
wherein the third illumination beam has electromagnetic radiation having a predefined third property, which differs from the first and second properties;
wherein the deflection device deflects the third illumination beam toward the projection surface so that the third illumination beam generates a third beam spot on the projection surface,
wherein the third beam spot is moved over the projection surface so that with the aid of the third beam spot, the third image is displayed for a third observer on the projection surface, superimposed on the first and second images.