Abstract: A handheld dimensioning system that analyzes a depth map for null-data pixels to provide feedback is disclosed. Null-data pixels correspond to missing range data and having too many in a depth map may lead to dimensioning errors. Providing feedback based on the number of null-data pixels helps a user understand and adapt to different dimensioning conditions, promotes accuracy, and facilitates handheld applications.

Abstract: A handheld dimensioner with a user interface configured to present a quality indicator is disclosed. The handheld dimensioner is configured to capture three-dimensional (3D) data and assess the three-dimensional-data's quality. Based on this quality, a quality indicator may be generated and presented to a user via the user interface. This process may be repeated while the user repositions the handheld dimensioner. In this way, the user may use the quality indicators generated at different positions to find an optimal position for a particular dimension measurement.

Abstract: A process is provided for the manufacture of polyvinyl alcohol, having an APHA color of equal to or less than about 10, by polymerizing a vinyl acetate monomer to form polyvinyl acetate and then hydrolyzing the polyvinyl acetate to form polyvinyl alcohol wherein the vinyl acetate monomer is characterized as having an inhibitor level of equal to or less than about 10 ppm, preferably less than about 5 ppm, more preferably less than about 3 ppm, even more preferably less than about 1 ppm.

Abstract: The use of spatial light modulators to steer light beams is disclosed. A dual frequency liquid crystal spatial light modulator can be controlled so as to form a blazed phase grating thereon that effects desire deflection of incident light.

Abstract: A first machine-readable data carrier comprises an embedded command to control communication with a second machine-readable data carrier. An automatic data collection system is configured to extract the embedded command from the first machine-readable data carrier and to execute the command with respect to the second machine-readable data carrier.

Abstract: A method and system for aligning a spatial light modulator with respect to an imaging device is disclosed. An image of the spatial light modulator can be formed upon the imaging device and a controller can be used to position optical elements in a manner that effects translation, rotation, and scaling of the image so as to provide desired alignment. Such alignment can, for example, facilitate enhanced wavefront correction so as to at least partially compensate for the detrimental effects of atmospheric distortion in such applications as optical communications, imaging, and weaponry.

Abstract: A foldable stand that accommodates and supports multiple types of handheld devices, a means of clamping these devices in place to enable manipulation of the device's user interface, a camera for capturing a real-time video image of the handheld device's display, and a means of transmitting this image to a computer.

Abstract: A wavefront correction system using a dual frequency liquid crystal spatial light modulator to vary phase relationships of a wavefront is disclosed. A light beam from the dual frequency liquid crystal spatial light modulator can be split into a reference beam and a plurality of measurement beams to enhance a speed and/or accuracy of phase measurement. A temperature of the dual frequency liquid crystal spatial light modulator can be sensed to facilitate temperature control and/or temperature compensation, so as to enhance the accuracy associated with use of the crossover frequency used to control the dual frequency liquid crystal spatial light modulator.

Abstract: The use of spatial light modulators to steer light beams and/or vary a field of view is disclosed. A dual frequency liquid crystal spatial light modulator can be controlled so as to form a blazed phase grating thereon that effects desire deflection of incident light. A dual frequency liquid crystal spatial light modulator can also be controlled so as to communicate light from a desired field of view to an imaging device or the like.

Abstract: A reader such as a barcode reader identifies at least one potential target such as a barcode symbol in its field-of-view, and projects or transmits an indicator toward or proximate the potential target containing information about the respective potential target. Such information may include which target is currently active, the symbology in which the target is encoded, the relative position of the reader with respect to the target, the ability of the reader to decode the target, and/or ranked or sorted order information regarding the target and neighboring targets. The reader may rank, sort, prioritize or otherwise determine order based on various parameters, including symbology, position in field-of-view, size, etc., and may base such on past history of the reader and/or user, and may weight such.

Abstract: A method and system of frequency tagging lidar light signals is disclosed. An optical synthesizer can be used to provide a sequence of frequency tagged light signals so as to substantially mitigate ambiguity associated with received light signals. This results in a desirable reduction in the duration of a duty cycle of the lidar system, thus enhancing the resolution of the lidar system.

Abstract: A three dimensional display has an array of quantum dots configured to provide phase controlled light that defines a three dimensional image. A quantum dot driver can be used to determine which quantum dots are activated and when they are activated. A three dimensional phase pattern generator can be used to determine a phase pattern of light from the array of quantum dots that will provide a three dimensional image corresponding to a video signal provided thereto.

Abstract: A wavefront correction system using a dual frequency liquid crystal spatial light modulator to vary phase relationships of a wavefront is disclosed. A light beam from the dual frequency liquid crystal spatial light modulator can be split into a reference beam and a plurality of measurement beams to enhance a speed and/or accuracy of phase measurement. A temperature of the dual frequency liquid crystal spatial light modulator can be sensed to facilitate temperature control and/or temperature compensation, so as to enhance the accuracy associated with use of the crossover frequency used to control the dual frequency liquid crystal spatial light modulator.

Abstract: A method and system for aligning a spatial light modulator with respect to an imaging device is disclosed. An image of the spatial light modulator can be formed upon the imaging device and a controller can be used to position optical elements in a manner that effects translation, rotation, and scaling of the image so as to provide desired alignment. Such alignment can, for example, facilitate enhanced wavefront correction so as to at least partially compensate for the detrimental effects of atmospheric distortion in such applications as optical communications, imaging, and weaponry.

Abstract: Systems and methods are disclosed for providing a more robust flat panel display by using the Faraday effect to control light emission from a solid state material so as to form two-dimensional or three-dimensional images. Flux tubes can be configured to define a two dimensional array. Each flux tube is somewhat analogous to a single bubble of a magnetic bubble memory and can define a pixel. At least some aspect of light transmitted through a flux tube can be varied thereby, so as to facilitate the formation of an image.

Abstract: A polarization rotation element is provided. In one embodiment, the polarization rotation element includes a first polarizing member having a first surface and a second surface, the first surface configured to internally reflect input light to the second surface, the second surface configured to internally reflect light from the first surface and transmit the reflected light, and a second polarizing member element having a first surface and a second surface, the first surface configured to internally reflect the transmitted light from the first polarizing member to the second surface, the second surface configured to internally reflect light from the first surface and transmit the reflected light.

Abstract: The present application is directed to a self-pixelating focal plane array and includes a photodetection portion having a body defining a self-pixelating active detection region, and a readout device in electrical communication with the photodetection portion and configured to capture electrical charges from the photodetection portion. During use, the photodetection portion is configured to operate in Geiger mode. As such, the application of one or more electrical fields to the photodetection portion results in the photodetection portion operating in a self-pixelating manner. The readout device may be used to capture the electrical charges and signals generated by the photodetection portion due to the incidence of one or more photons on the photodetection portion.

Abstract: Reconfiguration and/or upgrade of Automatic Data Collection (ADC) devices such as barcode readers, RFID readers and/or magnetic stripe readers is facilitated by performing adequate testing, prompt accurate analysis of the results of such testing, and prompt delivery of the analysis to those involved with the development of ADC device builds, associated components and/or functionality. The functionality of ADC devices and/or ADC device platforms is determined and appropriate tests are selected and provided to the ADC device and/or ADC device platform for execution. Results are received, analyzed and provided to appropriate users.

Abstract: The present application is directed to high speed self pixelating low light optical system.

Abstract: A fiber gain medium assembly is provided. The fiber gain medium assembly includes a fiber gain medium, which in turn, includes a longitudinally extending inner core. The fiber gain medium also includes a cladding layer and a photo-emitting conductive polymer, both of which surround the inner core and extend longitudinally therealong. In this regard, the photo-emitting conductive polymer can surround the cladding layer to thereby surround the inner core. Alternatively, the cladding layer can comprise the photo-emitting conductive polymer. The fiber gain medium assembly can also include an electrical system electrically coupled to the photo-emitting conductive polymer. The electrical system is capable of providing an electric field to thereby excite the photo-emitting conductive polymer to emit photons capable of propagating into the inner core and producing gain for the signals propagating through the inner core.