Rear projection screen with infrared transparency
First Claim
1. A system comprising:
- a processor;
a projector to project images through emission of visible light;
a light emitter configured to emit non-visible light;
a display medium having a rear surface configured to receive the visible light from the projector and a front surface to display the images, the display medium having a plurality of elements arranged on the rear surface, each of the plurality of elements having a first region and a second region, the first and second regions cooperating to internally reflect the visible light received at the rear surface so that the visible light exits from the front surface to depict the images, the second region comprising a cup-shaped member encircling the first region;
the display medium being further configured to allow non-visible light directed to the rear surface of the display medium to pass, at least in part, through the display medium to an environment in front of the front surface of the display medium; and
one or more computer-readable media storing computer-executable instructions that, when executed by the processor, cause the processor to perform acts comprising;
detecting, based at least in part on an interaction of a user of the display medium with the non-visible light passed through to the environment, one or more gestures made by the user;
determining one or more operations to be performed based on the one or more gestures; and
performing at least one of the one or more operations.
2 Assignments
0 Petitions
Accused Products
Abstract
Described herein are systems and techniques for projecting content, periodically or continuously, onto a rear surface of a display medium from behind. The rear projected image is presented on an opposing or front surface of the display medium to a human audience for viewing. Additionally, non-visible light (e.g., IR light) is passed through the display medium to an area in front of the medium. The non-visible light is used to detect human gestures. In this manner, the rear projection arrangement avoids viewer obstruction during projection, yet detects and recognizes gestures made by the viewer in front of the display medium. In one implementation, the display medium comprises a thin sheet of transparent plastic material with arrays of curved optical features to redirect light received on the rear surface out the front surface toward the human audience.
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Citations
18 Claims
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1. A system comprising:
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a processor; a projector to project images through emission of visible light; a light emitter configured to emit non-visible light; a display medium having a rear surface configured to receive the visible light from the projector and a front surface to display the images, the display medium having a plurality of elements arranged on the rear surface, each of the plurality of elements having a first region and a second region, the first and second regions cooperating to internally reflect the visible light received at the rear surface so that the visible light exits from the front surface to depict the images, the second region comprising a cup-shaped member encircling the first region; the display medium being further configured to allow non-visible light directed to the rear surface of the display medium to pass, at least in part, through the display medium to an environment in front of the front surface of the display medium; and one or more computer-readable media storing computer-executable instructions that, when executed by the processor, cause the processor to perform acts comprising; detecting, based at least in part on an interaction of a user of the display medium with the non-visible light passed through to the environment, one or more gestures made by the user; determining one or more operations to be performed based on the one or more gestures; and performing at least one of the one or more operations. - View Dependent Claims (2, 3, 4)
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5. A system comprising:
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a passive display medium having a front surface and a rear surface, the passive display medium configured to; receive visible light on the rear surface and internally reflect the visible light so that the visible light exits the front surface to depict images; and allow non-visible light directed to the rear surface to pass, at least in part, through the display medium to an environment in front of the front surface of the display medium; wherein the passive display medium comprises a plurality of elements arranged on the rear surface, each of the plurality of elements comprising at least first and second surfaces to internally reflect the visible light, and wherein the first and second surfaces are curved; a projector to project images to the rear surface of the passive display medium, the projected images causing the images to be displayed for viewing on the front surface of the display medium; and an interaction detection component configured to detect and interpret human interaction with the non-visible light passed through to the environment. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. A passive display medium comprising:
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a structure having a rear surface and a front surface; and a plurality of optical elements arranged in the rear surface, each of the optical elements comprising a first reflective region to receive visible light passing through the rear surface and reflect the visible light internally between the rear and front surfaces, and a second reflective region to reflect the visible light so that the visible light emanates out of the front surface, wherein the first and second reflective regions transmit infrared light. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification