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US 2016/0261830 A1Published application
Lambertian servo sensor position and timing
AssigneePrysm, Inc.
InventorsJahja I. TRISNADI, Alan C. BURROUGHS
Life of this patent
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Abstract
The present disclosure generally relates to a LPD system having a plurality of detectors for detecting light reflected from the back surface of the screen. The detectors are positioned to detect light from one or more portions of the screen that are not directly in front of the detector.
Claims25
A system, comprising:
- a screen, the screen including:
- a plurality of pixels, each pixel having a plurality of subpixels, wherein the subpixels are spaced apart by a distance such that a space is present between adjacent subpixels;
- a filter layer, wherein the pixels and subpixels are disposed on a first side of the filter layer, and wherein the filter layer has a second side opposite the first side and wherein the second side is parallel to the first side;
- and
- a plurality of first reflective regions, wherein the plurality of first reflective regions are disposed on the second side of the filter layer opposite the first side and wherein each first reflective region is aligned with a corresponding space between at least one pair of adjacent subpixels;
- one or more light sources;
- one or more raster scan devices;
- one or more focusing lenses, wherein the one or more light sources, the one or more raster scanning devices and the one or more focusing lenses are arranged such that light emitted from the one or more light sources is directed at the one or more raster scanning devices and then directed through the one of more focusing lenses and then onto the screen;
- and
- a plurality of detectors,
- wherein each of the plurality of detectors is placed within a space between the second side of the filter layer and the one or more focusing lenses,
- wherein each detector has a face and wherein the face of each detector is angled towards a portion of the screen,
- wherein each detector's face is angled to a direction that is away from the detector's nearest point of the screen.
10 more elements
A system, comprising:
- an enclosure, wherein the enclosure is bound by a screen and a plurality of walls, the screen including a filter layer having a plurality of reflective regions disposed thereon, the enclosure having detection area and a plurality of sub-enclosures, each sub-enclosure having an enclosure wall having an opening therethrough;
- one or more light sources disposed within each sub-enclosure;
- a raster scan device disposed within each sub-enclosure;
- a focusing lens disposed within the opening of each sub-enclosure;
- and
- a plurality of detectors disposed between the enclosure wall of a corresponding sub-enclosure and the screen, wherein the plurality of detectors are facing the screen, wherein each detector is positioned to detect scattered light from the screen that originates from one or more light sources disposed within a corresponding sub-enclosure.
3 more elements
A system, comprising:
- a screen, the screen having a filter layer with a plurality of reflective regions thereon;
- a light source;
- a light directing system disposed between the light source and the screen and configured to direct light at the filter layer and scan the light across the filter layer;
- and
- four detectors disposed in a plane that has four hypothetical quadrants, wherein the screen has four hypothetical quadrants that are aligned with the four hypothetical quadrants of the plane, wherein the plane is parallel to the screen, wherein each detector has a face that is disposed at an angle relative to the screen, wherein a center line of each detector is perpendicular to the face of the corresponding detector, wherein the center line of each detector intersects a center of a hypothetical quadrant of the screen that is cattycorner the hypothetical quadrant of where the detector is located.
2 more elements
A method, comprising:
- directing a light from a light source to a screen, wherein the screen is divided into four hypothetical quadrants including an upper left quadrant, an upper right quadrant, a lower left quadrant, and a lower right quadrant, and wherein the screen additionally has reflective regions and pixel regions disposed between the reflective regions;
- scanning the light across the screen;
- and
- detecting the light that has been diffusely reflected from the screen, wherein the detecting is performed by a plurality of detectors, wherein each hypothetical quadrant has a corresponding detector including an upper left detector, an upper right detector, a lower left detector, and a lower right detector, and wherein the detecting comprises:
- detecting light reflected from the upper left quadrant with the lower right detector;
- detecting light reflected from the upper right quadrant with the lower left detector;
- detecting light reflected from the lower left quadrant with the upper right detector;
- and
- detecting light reflected from the lower right quadrant with the upper left detector.
6 more elements
Dependencies are inferred from the claim text.