Patent application number | Description | Published |
20120250027 | Surface Wave Assisted Structures and Systems - A surface wave assisted system having an aperture layer with a surface and an aperture, and a plurality of grooves around the aperture. The plurality of grooves is configured to generate an optical transfer function at the aperture by inducing a surface wave for interfering with transmission of light of a range of spatial frequency. | 10-04-2012 |
20130181896 | INTEGRATED LIGHT EMITTING AND LIGHT DETECTING DEVICE - Methods and systems for providing a light device that can emit light and sense light are disclosed. In one embodiment, a lighting device includes a light guide having a planar first surface, the light guide configured such that at least some ambient light enters the light guide through the first surface and propagates therein, and at least one light detector disposed along an edge of the light guide, the at least one detector optically coupled to the light guide to receive light propagating therein. The light detector can be configured to produce a control signal. In some embodiments, the lighting device also includes at least one light turning feature disposed on the first surface, the at least one light turning feature configured to direct light incident into the light guide through the first surface. | 07-18-2013 |
20140035836 | CHANNEL WAVEGUIDE SYSTEM FOR SENSING TOUCH AND/OR GESTURE - This disclosure relates to a channel waveguide, at least a portion of which is disposed within a viewing area of an interactive display, proximate to and substantially parallel to a user interface surface of the interactive display. A source of a first electromagnetic or acoustic signal is input to the channel waveguide. At least one detector is configured to receive, from the channel waveguide, a second signal corresponding to the first signal and to output a third signal indicative of a position of an object proximate to the channel waveguide. | 02-06-2014 |
20140146088 | PATTERNED ILLUMINATION SCANNING DISPLAY - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for providing a compact, low-sensor count scanning display that is capable of both displaying graphical content and of capturing images of objects placed on or above the scanning display. Various implementations are discussed, including raster scan, line scan, and compressive sampling version. | 05-29-2014 |
20140264034 | NEAR-FIELD OPTICAL SENSING SYSTEM - This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for sensing touch and/or gestures in the near-field area overlying a light-guiding layer within a device or other optical sensing system. In one aspect, modulated infrared light is emitted into the overlying area, and the light reflected by objects within the overlying area is redirected through the light-guiding layer to infrared sensors. In one aspect, a masking structure can be located between the light-guiding layer and the infrared sensors. In some aspects, probability mapping or backtracing can be used to estimate the locations of objects within the overlying area. | 09-18-2014 |
20140267875 | IMAGING METHOD AND SYSTEM WITH OPTICAL PATTERN GENERATOR - This disclosure provides systems, methods and apparatus for imaging. In one aspect, the imaging system can include a light sensor, a light guide, an optical pattern generator, and a processor. The light guide can include light turning features configured to receive ambient light and to direct the ambient light out through an output surface of the light guide to the light sensor. The optical pattern generator can be configured to generate a light intensity pattern upon the passage of the ambient light through the optical pattern generator and project the light intensity pattern onto the light sensor. The processor can be configured to construct an image based on the light intensity pattern. | 09-18-2014 |
20150083917 | INFRARED LIGHT DIRECTOR FOR GESTURE OR SCENE SENSING FSC DISPLAY - This disclosure provides systems, methods and apparatus for touch and gesture recognition, using a field sequential color display. The display includes a processor, a lighting system, and an arrangement for spatial light modulation that includes a number of apertures, and devices for opening and shutting the apertures. A light directing arrangement includes at least one light turning feature. The display lighting system is configured to emit visible light and infrared (IR) light through at least a first opened one of the plurality of apertures. The light turning feature is configured to redirect IR light emitted through the opened aperture into at least one lobe, and to pass visible light emitted by the display lighting system through the opened aperture with substantially no redirection. | 03-26-2015 |
20150084927 | INTEGRATION OF A LIGHT COLLECTION LIGHT-GUIDE WITH A FIELD SEQUENTIAL COLOR DISPLAY - This disclosure provides systems, methods and apparatus for touch and gesture recognition, using a field sequential color display. The display includes a processor, a lighting system, and an arrangement for spatial light modulation that includes an array of light modulators. Each light modulator is switchable between an open position that permits transmittance of light from the lighting system through a respective aperture and a shut position that blocks light transmission through the respective aperture. The processor switches the light modulators in accordance with a first modulation scheme to render an image and in accordance with a second modulation scheme to selectively pass object illuminating light through at least one of the respective apertures. A light sensor receives light resulting from interaction of the object illuminating with an object and outputs a signal to the processor. The processor recognizes, from the output of the light sensor, a characteristic of the object. | 03-26-2015 |
20150084928 | TOUCH-ENABLED FIELD SEQUENTIAL COLOR DISPLAY USING IN-CELL LIGHT SENSORS - This disclosure provides systems, methods and apparatus for touch and gesture recognition, using a field sequential color display. The display includes a processor, a lighting system, and an arrangement for spatial light modulation that includes an array of light modulators. Each light modulator is switchable between an open position that permits transmittance of light from the lighting system through a respective aperture and a shut position that blocks light transmission through the respective aperture. The processor switches the light modulators in accordance with a first modulation scheme to render an image and in accordance with a second modulation scheme to selectively pass object illuminating light through at least one of the respective apertures. A light sensor receives light resulting from interaction of the object illuminating with an object and outputs a signal to the processor. The processor recognizes, from the output of the light sensor, a characteristic of the object. | 03-26-2015 |
20150084994 | TOUCH-ENABLED FIELD-SEQUENTIAL COLOR (FSC) DISPLAY USING A LIGHT GUIDE WITH LIGHT TURNING FEATURES - This disclosure provides systems, methods and apparatus for touch and gesture recognition, using a field sequential color display. The display includes a processor, a lighting system, and an arrangement for spatial light modulation that includes an array of light modulators. Each light modulator is switchable between an open position that permits transmittance of light from the lighting system through a respective aperture and a shut position that blocks light transmission through the respective aperture. The processor switches the light modulators in accordance with a first modulation scheme to render an image and in accordance with a second modulation scheme to selectively pass object illuminating light through at least one of the respective apertures. A light sensor receives light resulting from interaction of the object illuminating with an object and outputs a signal to the processor. The processor recognizes, from the output of the light sensor, a characteristic of the object. | 03-26-2015 |