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US 2009/0153582 A1Published application
Laser Displays Based On Color Mixing Between Colored Light And Phosphor-Emitted Visible Colored Light
OwnerRoger A. Hajjar, David Kent +1inventors
InventorsRoger A. Hajjar, David Kent, Phillip Malyak
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Abstract
Laser display systems using at least one scanning laser beam to excite one or more fluorescent materials on a screen which emit light to form images. The fluorescent materials may include phosphor materials.
Claims15
A display system, comprising:
- first, second, and third laser display modules to produce first, second and third monochromatic image components of a final image in first, second, and third different colors, respectively, and to project the first, second and third monochromatic image components on a display screen to produce the final image,
- wherein the first laser display module comprises:
- (1) a first screen comprising a first phosphor to absorb light at an excitation wavelength to emit light at a first wavelength different from the excitation wavelength;
- (2) a first laser module to project and scan at least one laser beam at the excitation wavelength onto the first screen to convert an image in the first color carried by the laser beam into the first monochromatic image component produced by the first phosphor on the first screen;
- and (3) a first projection optical unit to project the first monochromatic image component from the first screen to the display screen.
2 more elements
A method for mixing different monochromatic image components on a display screen to form colored images, comprising:
- using a first laser display module to produce a first monochromatic image component in a first color and to project the first monochromatic image component of a final image through a space onto a display screen, the first laser display comprising:
- (1) a first screen that is spaced from the display screen and comprises a first phosphor to absorb light at an excitation wavelength to emit light at a first wavelength different from the excitation wavelength;
- (2) a first laser module to project and scan at least one laser beam at the excitation wavelength onto the first screen to convert an image in the first color carried by the laser beam into the first monochromatic image component produced by the first phosphor on the first screen;
- and (3) a first projection optical unit to project the first monochromatic image component from the first screen to the display screen;
- using second and third laser display modules to produce second and third monochromatic image components of the final image in second, and third colors, respectively, and to project the second and third monochromatic image components onto the display screen to mix with the first monochromatic image component to produce the final image on the display screen.
2 more elements
Dependencies are inferred from the claim text.