System and method to prevent unintended viewing of a projected image
AssigneeSolutia Inc.
InventorsJAIME ANTONIO LI, CASEY LYNN ELKINS, STEVEN V. HALDEMAN, FRANCOIS ANDRE KORAN
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Abstract
Display systems and methods are disclosed for displaying images, while preventing or reducing unintended viewing. A projector is provided that emits light toward a viewing surface at three discrete wavelength ranges to create an image. A light-absorbing substrate is also provided, disposed between the viewing surface and the unintended viewer, incorporating narrow-band absorbers that selectively absorb light within the three wavelength ranges, thus reducing or eliminating the image perceived by the unintended viewer.
Claims23
A display system for displaying an image, the display system comprising:
- a. a projector that emits light toward a viewing surface at three discrete wavelength ranges in the visible spectrum to create an image;
- b. a viewing surface that allows viewing of the image by both an intended viewer and an unintended viewer;
- and
- c. a light-absorbing substrate, disposed between the viewing surface and the unintended viewer, incorporating one or more narrow-band absorbers that selectively absorb light within the three discrete wavelength ranges, thus reducing or eliminating the image perceived by the unintended viewer.
A method of preventing unintended viewing of an image on a viewing surface, the image formed from light from a projector emitted at three discrete wavelength ranges, the method comprising placing a light-absorbing substrate between the viewing surface and the unintended viewer, that incorporates one or more narrow-band absorbers that selectively absorb light within the three discrete wavelength ranges, thus reducing or eliminating the image perceived by the unintended viewer.
Dependencies are inferred from the claim text.