Abstract: A one-way display system includes a transparent screen and a transparent color filter. An image is emitted by the screen or projected onto the screen. The image is formed from a combination of colored lights. Instead of spanning all the wavelengths of each color, each light only spans a narrow band of the color. The color filter removes the narrow band so the image is only visible from one side of the screen. As the color filter removes only the narrow band, one can still look out and see objects on the other side of the screen minus the colors of the narrow band.

Abstract: A display system includes a projection screen and a projector. The projection screen includes a retarder plate between a polarizer and a transparent screen. The projector projects an image through the polarizer and the retarder plate onto the transparent screen. The image is visible from a first side of the transparent screen but invisible from a second side of the transparent screen because any light passing twice through the retarder plate is blocked by the polarizer.

Abstract: A display system includes a projection screen and a projector. The projection screen includes a retarder plate between a polarizer and a transparent screen. The projector projects an image through the polarizer and the retarder plate onto the transparent screen. The image is visible from a first side of the transparent screen but invisible from a second side of the transparent screen because any light passing twice through the retarder plate is blocked by the polarizer.

Abstract: A display system includes a projection screen and a projector. The projection screen includes a retarder plate between a polarizer and a transparent screen. The projector projects an image through the polarizer and the retarder plate onto the transparent screen. The image is visible from a first side of the transparent screen but invisible from a second side of the transparent screen because any light passing twice through the retarder plate is blocked by the polarizer.

Abstract: A one-way display system includes a partially reflective screen with a first image, and a partially absorptive screen with a second image that is an inverse of the first image. The two screens can be stacked on top of each other or separated by a small distance. A portion of ambient light on a first side of the display system passes through the partially reflective screen and exits as intermediate light. A portion of the intermediate light passes through the partially absorptive screen and exits as transmitted light to a second side of the display system. The transmitted light is spatially and chromatically uniform like the ambient light. This allows observers on the second side to see objects on the first side without the first image, and observers on the first side to see the first image.

Abstract: A one-way display system includes a partially reflective screen with a first image, and a partially absorptive screen with a second image that is an inverse of the first image. The two screens can be stacked on top of each other or separated by a small distance. A portion of ambient light on a first side of the display system passes through the partially reflective screen and exits as intermediate light. A portion of the intermediate light passes through the partially absorptive screen and exits as transmitted light to a second side of the display system. The transmitted light is spatially and chromatically uniform like the ambient light. This allows observers on the second side to see objects on the first side without the first image, and observers on the first side to see the first image.

Abstract: A one-way display system has a display layer with opaque active pixels and transparent inactive pixels interspersed with the active pixels. Each active pixel has a chromatic side and an opaque side. The active pixels is able to form an image visible from a first side of the display layer but not from a second side of the display layer, and the inactive pixels allows objects on the first side of the display layer to be seen from the second side of the display layer.

Abstract: A one-way display system includes a transparent screen and a transparent color filter. An image is emitted by the screen or projected onto the screen. The image is formed from a combination of colored lights. Instead of spanning all the wavelengths of each color, each light only spans a narrow band of the color. The color filter removes the narrow band so the image is only visible from one side of the screen. As the color filter removes only the narrow band, one can still look out and see objects on the other side of the screen minus the colors of the narrow band.

Abstract: A projection display system includes (1) a polarizer, (2) a holographic screen with holographic optical elements having the properties of a display portion and a polarizing portion, and (3) a projector for projecting an image through the polarizer and onto the holographic screen. The polarizing portion of the holographic screen has a different polarization direction from the polarizer such that the image is visible from a first side of the holographic screen and invisible from a second side of the holographic screen.

Abstract: A projection display system includes (1) a transparent screen, (2) a polarizer on the transparent screen, (3) a retarder plate on a first side of the transparent screen, (4) a mirror on the first side of the transparent screen, and (5) a projector for projecting an image through the transparent screen, the polarizer, the retarder plate, and onto the mirror. The mirror reflects the image onto the polarizer so that the reflected image is visible from the first side of the transparent screen and invisible from the second side of the transparent screen.