Patent application number | Description | Published |
20080212194 | Scanned-Beam Heads-Up Display and Related Systems and Methods - A heads-up display that includes a scanner and a projection assembly. The scanner generates an image by sweeping a beam of electromagnetic energy, and the projection assembly directs the image into a predetermined viewing space having a region with a substantially uniform intensity profile. Such a heads-up display can often be made smaller than a conventional heads-up display, and can often generate an image having a higher quality than an image generated by a conventional display. Furthermore, one can often calibrate and recalibrate such a display without physically modifying or replacing a component of the display or of a vehicle incorporating the display. | 09-04-2008 |
20080218822 | Scanned-Beam Heads-Up Display and Related Systems and Methods - A heads-up display that includes a scanner and a projection assembly. The scanner generates an image by sweeping a beam of electromagnetic energy, and the projection assembly directs the image into a predetermined viewing space having a region with a substantially uniform intensity profile. Such a heads-up display can often be made smaller than a conventional heads-up display, and can often generate an image having a higher quality than an image generated by a conventional display. Furthermore, one can often calibrate and recalibrate such a display without physically modifying or replacing a component of the display or of a vehicle incorporating the display. | 09-11-2008 |
20080297731 | APPARENT SPECKLE REDUCTION APPARATUS AND METHOD FOR MEMS LASER PROJECTION SYSTEM - A laser projection system is disclosed having reduced apparent speckle. The system includes a laser emitting a first beam on an optical element. The optical element emits a second beam incident on a scanner that scans the beam onto a projection screen. The optical element may be an exit pupil expander, delay plate, or have a locally electrically modulated index of refraction. In other embodiments, the laser has a tunable wavelength distribution that is changed for each frame displayed by the projection system to reduce apparent speckle. In still other embodiments, the angular content of a beam incident on a scanner is modulated to produce a time varying speckle pattern. | 12-04-2008 |
20090015929 | SUBSTRATE-GUIDED RELAYS FOR USE WITH SCANNED BEAM LIGHT SOURCES - Substrate-guided relays that employ light guiding substrates to relay images from sources to viewers in optical display systems. The substrate-guided relays are comprised of an input coupler, an intermediate substrate, and an output coupler. In some embodiments, the output coupler is formed in a separate substrate that is coupled to the intermediate substrate. The output coupler may be placed in front of or behind the intermediate substrate, and may employ two or more partially reflective surfaces to couple light from the coupler. In some embodiments, the input coupler is coupled to the intermediate substrate in a manner that the optical axis of the input coupler intersects the optical axis of the intermediate substrate at a non-perpendicular angle. | 01-15-2009 |
20090067057 | BURIED NUMERICAL APERTURE EXPANDER HAVING TRANSPARENT PROPERTIES - Briefly, in accordance with one or more embodiments, a buried numerical aperture expander may be utilized to provide a head-up or virtual display at a larger field of view without requiring a larger amount of space, larger sized display, or larger sized optics. The buried numerical aperture expander is capable of selectively reflecting light emanating from a display such that the reflected light is expanded into a larger field of view, while simultaneously allowing other light to be transmitted through the buried numerical aperture expander without expansion so that the buried numerical aperture expander may be deployed in conjunction with a windshield or window without adversely affecting the ability to see through buried numerical aperture expander. | 03-12-2009 |
20090161191 | Scanned Beam Display Having High Uniformity and Diminished Coherent Artifacts - Briefly, in accordance with one or more embodiments, time averaged Moiré patterns may be utilized in a scanned beam display having a Gaussian beam profile or the like in order to tailor uniformity of the image by controlling both the near field and far field regions of the display to result in a stable and uniform scanned beam display image. Consideration is made regarding the light source parameters of focus numerical aperture, profile, shape, and/or wavelength to achieve higher uniformity and stability without resulting in significant visible coherent artifacts such as tiled intensity patterns and/or Moiré. | 06-25-2009 |
20090231719 | Eyebox Shaping Through Virtual Vignetting - Briefly, in accordance with one or more embodiments, a compressed microlens array comprises an array of lenslets arranged in the array to have the lenslet centers spaced apart at a first distance in a first direction and to have the lenslet centers spaced apart at a second distance in a second direction such that the first direction is greater than the second direction. A raster scan of an image projected onto the array of lenslets results in the image being displayed in an eyebox having an aspect ratio having a length in the first direction being longer than a length in second direction via virtual vignetting of the diffraction patterns resulting from the raster scan. | 09-17-2009 |
20090251788 | Optical Device for Use with Scanned Beam Light Sources - Substrate-guided relays that employ light guiding substrates to relay images from sources to viewers in optical display systems. The substrate-guided relays are comprised of an input coupler, an intermediate substrate, and an output coupler. In some embodiments, the output coupler is formed in a separate substrate that is coupled to the intermediate substrate. The output coupler may be placed in front of or behind the intermediate substrate, and may employ two or more partially reflective surfaces to couple light from the coupler. In some embodiments, the input coupler is coupled to the intermediate substrate in a manner that the optical axis of the input coupler intersects the optical axis of the intermediate substrate at a non-perpendicular angle. | 10-08-2009 |
20100046075 | EMBEDDED RELAY LENS FOR HEAD-UP DISPLAYS OR THE LIKE - Briefly, in accordance with one or more embodiments, an optical relay comprises a partially-reflective-coated Fresnel lens or similar low-profile lens such as a diffractive lens or a holographic lens having a first index of refraction and a filler medium having a second index of refraction and being disposed adjacent to the Fresnel lens. The optical relay enables the optical power of the Fresnel or similar low-profile lens embedded within the two layers to influence a beam that is reflected from the optical relay while allowing transmitted light to experience little or no influence from the embedded lens. | 02-25-2010 |
20100079861 | Exit Pupil Forming Scanned Beam Projection Display Having Higher Uniformity - Briefly, in accordance with one or more embodiments, a display screen for a scanned beam display system comprises an exit pupil expander comprising a reflective layer to reflect an incoming beam from a scanned beam projector to an eyebox. Exit numerical aperture cones emanating from the exit pupil expander resulting from the reflected incoming beam are angularly redirected toward an eyebox disposed near an image plane to result in at least partially overlapping zeroth-order diffraction pattern from multiple spots on the exit pupil expander. | 04-01-2010 |
20100118397 | Reduced Laser Speckle Projection Screen - A projection screen reduces laser speckle. Cells having non-zero volume are arranged on the projection screen so as to receive laser light. The cells are at least partially filled with a light scattering media. The laser light enters the cells and is spatially scattered. The light emerging from the cells includes many phase fronts with a more random polarization state. Speckle is reduced as a result. The cells are oriented to reduce lateral movement of light from one cell to another, thereby reducing blooming that would otherwise occur. | 05-13-2010 |
20100201953 | Substrate-Guided Display Having Polarization Selective Input Structure - A display system includes and image-guiding substrate with input and/or output structures configured to improve image quality. | 08-12-2010 |
20100202034 | Substrate-Guided Display with Improved Image Quality - A display system includes and image-guiding substrate with input and/or output structures configured to improve image quality. | 08-12-2010 |
20100315597 | Apparent Speckle Reduction Via Beam Offset Diversity in Pupil Space - Briefly, in accordance with one or more embodiments, beam position diversity or beam offset diversity in pupil space performs the complement to angular diversity by maintaining angular content of a beam while changing its position and/or polarization properties in pupil space over time. | 12-16-2010 |
20110013097 | Correcting Scanned Projector Distortion By Varying the Scan Amplitude - Briefly, in accordance with one or more embodiments, scanned beam projector may comprise a light source, a scan drive and a scanning platform to project an image onto a projection surface. The scan drive circuit is capable of at least partially correcting distortion in the projected image by varying an amplitude of the scan drive signal to at least partially compensate for the distortion in the projected image. | 01-20-2011 |
20130207937 | Optical Stylus Interaction - Optical stylus interaction techniques are described. In an implementation, a display of a computing device includes optical sensors capable of detecting images projected by a stylus. A stylus may include a projection system to project various images used to convey interaction information that may be interpreted by the computing device. Based on recognition of different projected images, a context for interaction of the stylus may be ascertained and corresponding operations may be performed by the computing device. This may include resolving a spatial position of the stylus relative to the display device as well as movement of the stylus and images that defines various stylus-based gestures. In addition, the environment for optical stylus interaction enables a writing mode that emulates natural writing by mapping different projectable images to changes in pressure applied to the stylus when in contact with the display. | 08-15-2013 |
20130229357 | SENSOR-IN-PIXEL DISPLAY SYSTEM WITH NEAR INFRARED FILTER - A display system includes both a cover panel and a display panel. The display panel includes multiple display pixels and multiple sensor elements configured to detect infrared light reflected from an object touching or close to the cover panel. The filter layer is configured to increase rejection of near infrared light reflected from the object prior to detection of the infrared light by the multiple sensor elements. The filter layer can be positioned in different locations, such as between the display panel and the cover panel, within the display panel, or within or on top of the cover panel. | 09-05-2013 |
20140022629 | TRANSPARENT TAGS WITH ENCODED DATA - Transparent tags with encoded data include both a base mirror component and a matrix component, and may optionally include a filter component. These components are combined to achieve a system having a tag that absorbs infrared light in particular portions and reflects infrared light in other portions, presenting a pattern which encodes the data included in the tag to sensors of a display panel. This combination of components also reduces near infrared and/or red ambient light that can be sensed by the sensor in the display panel, reducing interference from such ambient light when identifying the pattern while enabling the tag to be substantially visibly transparent to a user. | 01-23-2014 |
20140376260 | Hybrid Concentrator for a Backlight - This document describes techniques and apparatuses for implementing a hybrid concentrator for a backlight. The backlight includes a light guide and multiple light sources positioned along an input end of the light guide. The backlight further includes multiple hybrid concentrators that each include a lens in a central region of the concentrator and one or more total-internal-reflection (TIR) zones. Each hybrid concentrator is positioned between a corresponding light source and the light guide, and is configured to concentrate light into the light guide. The light guide then projects the concentrated light to illuminate a modulating display panel to form images for viewing. | 12-25-2014 |