Patent application number | Description | Published |
20080267537 | Noise Reduction by Image Subtraction in an Automatic Data Collection Device, Such as an Image Acquisition Device - An automatic data collection device ( | 10-30-2008 |
20080277477 | DYNAMIC FOCUS CALIBRATION, SUCH AS DYNAMIC FOCUS CALIBRATION USING AN OPEN-LOOP SYSTEM IN A BAR CODE SCANNER - A system and method for recalibrating a bar code scanner or other optical system is described. In some cases, the system dynamically adjusts the focal length of a lens assembly based on open-loop process, such as based on feedback related to a distance between the lens assembly and an imaged object. In some cases, the system dynamically adjusts the lens assembly in order to provide auto focusing or zoom adjustment | 11-13-2008 |
20080277480 | TEMPERATURE COMPENSATED AUTO FOCUS CONTROL FOR A MICROFLUIDIC LENS, SUCH AS AUTO FOCUS CONTROL FOR A MICROFLUIDIC LENS OF A BAR CODE SCANNER - A system and method for adjusting the focus or zoom of a microfluidic lens assembly is described. In some cases, the system adjusts the focal length of a microfluidic lens assembly in order to compensate for the effect of temperature on the lens assembly. In some cases, the system dynamically adjusts the lens assembly in order to provide auto focusing of a bar code scanner. The system may use an open-loop system where one or more look-up-table(s) are used to quickly provide a compensation value. | 11-13-2008 |
20090206158 | AUTO-FOCUSING METHOD FOR AN AUTOMATIC DATA COLLECTION DEVICE, SUCH AS AN IMAGE ACQUISITION DEVICE - An automatic data collection device includes an automatic focusing feature. The automatic focusing feature is based on a type of triangulation technique, which determines an optimum position of an imaging lens in order to obtain an optimally focused image. The position of the imaging lens may be adjusted until the imaging lens is at the optimum position. A pair of aiming beams is separated by a distance. The optimum position of the imaging lens (and/or the amount of displacement of the imaging lens that is needed to reach the optimum position) can be determined based on a relation that involves the distance between the two aiming beams, a focal length of the imaging lens, and a distance between “spots” that are respectively generated on an image plane (such as on an image sensor) by the pair of aiming beams. | 08-20-2009 |
20100314448 | DYNAMIC FOCUS CALIBRATION, SUCH AS DYNAMIC FOCUS CALIBRATION USING AN OPEN-LOOP SYSTEM IN A BAR CODE SCANNER - A system and method for recalibrating a bar code scanner or other optical system is described. In some cases, the system dynamically adjusts the focal length of a lens assembly based on open-loop process, such as based on feedback related to a distance between the lens assembly and an imaged object. In some cases, the system dynamically adjusts the lens assembly in order to provide auto focusing or zoom adjustment | 12-16-2010 |
20120193420 | SYSTEM FOR GENERATING AN EXTENDED SPECULAR LIGHTING FIELD - A system for generating an extended specular lighting field for reading symbols on a reflective background surface is described. A scanner generates illumination for illuminating the symbols. Reflection of the illumination incident upon the reflective surface is retroreflected onto the symbols on the reflective surface. Reflection of the retroreflected light by the reflective surface is received by the scanner for processing information about the symbols. By using the reflective surface to help illuminate the symbols, an ordinary scanner can be used to read the symbols. | 08-02-2012 |
20130043314 | MOTION TOLERANT BAR CODE READER - A 2D bar code reader with improved motion tolerance is presented. The 2D bar code reader includes a lens configuration that enhances chromatic aberration to separate the focal planes on which bar code images from two different color components of a light will be focused. An imager interprets one of the focal planes as the image and the other one as noise to be ignored. In addition, the increased depth of field generated by the chromatic aberration allows for a larger aperture stop setting and quicker shutter speed, thereby improving motion tolerance. | 02-21-2013 |
20130057753 | TWO-DIMENSIONAL IMAGER WITH SOLID-STATE AUTO-FOCUS - An imaging system having a solid-state auto focusing system advantageously images broadband light reflected from an object to be imaged using a lens objective having chromatic aberration, which focuses different colors of light at different focal planes. Using the color information in the focal planes in conjunction with an object distance determined by a range finder, a luminance plane is constructed that has a focused image of the object. The system provides the focused image of the object without the use of any moving parts. | 03-07-2013 |
20130306728 | SYSTEMS AND METHODS TO READ MACHINE-READABLE SYMBOLS - Systems and methods of reading machine-readable symbols are provided. A method of reading a machine-readable symbol includes emitting by a first source outgoing electromagnetic energy comprising wavelengths in a first portion of the electromagnetic spectrum towards a target comprising the machine-readable symbol. Incoming electromagnetic energy comprising wavelengths in a second portion of the electromagnetic spectrum reflected or emitted by the machine-readable symbol are discerned by a global shutter sensor after transmission through at least a first portion of a color filter array having a plurality of portions. | 11-21-2013 |
20140002828 | VOLUME DIMENSIONING SYSTEM AND METHOD EMPLOYING TIME-OF-FLIGHT CAMERA | 01-02-2014 |
20140049635 | VOLUME DIMENSIONING SYSTEM CALIBRATION SYSTEMS AND METHODS - Various corporate, industry, and regulatory guidelines, best practices and standards are used in establishing acceptable levels of accuracy for volume dimensioning systems used in commerce. A volume dimensioning system can determine at least one distortion value that is indicative of an amount of distortion present in the system and responsive to the amount of distortion, autonomously alter or adjust the units of accuracy of information reported by the system. Such alteration or adjustment of units of accuracy may be performed based on an assessment of the distortion relative to a number of distortion thresholds. Responsive to the assessment, the volume dimensioning system can adjust a unit of accuracy in a representation of volume dimensioning related information. | 02-20-2014 |
20140084068 | MULTIPLE FOCUSABLE FIELDS OF VIEW, SUCH AS A UNIVERSAL BAR CODE SYMBOL SCANNER - A device permitting multiple focusable fields of view, such as a universal bar code scanner that can read bar code symbols at both near and far distances for a range of X-dimensions, is described. The scanner uses an adjustable optical imaging system that has at least two different focused fields of view. In one embodiment, the optimal field of view for a target object can be automatically selected with the use of a range finder. | 03-27-2014 |
20150049347 | VOLUME DIMENSIONING SYSTEM AND METHOD EMPLOYING TIME-OF-FLIGHT CAMERA - Volume dimensioning employs techniques to reduce multipath reflection or return of illumination, and hence distortion. Volume dimensioning for any given target object includes a sequence of one or more illuminations and respective detections of returned illumination. A sequence typically includes illumination with at least one initial spatial illumination pattern and with one or more refined spatial illumination patterns. Refined spatial illumination patterns are generated based on previous illumination in order to reduce distortion. The number of refined spatial illumination patterns in a sequence may be fixed, or may vary based on results of prior illumination(s) in the sequence. Refined spatial illumination patterns may avoid illuminating background areas that contribute to distortion. Sometimes, illumination with the initial spatial illumination pattern may produce sufficiently acceptable results, and refined spatial illumination patterns in the sequence omitted. | 02-19-2015 |
20150053769 | AUTOMATIC DATA COLLECTION APPARATUS AND METHOD - Machine-readable symbol readers and/or scan engines may subtractively impose an aiming pattern on an illumination field produced by a source of light or illumination. An optical component with a mask or filter are interposed in an optical path extending outwardly from the source of light or illumination. The mask or filter may have a defined shape or configuration to subtractively produce an aiming pattern with a desired shape or configuration. The mask or filter may, or may not, be wavelength selective or spectral. A wavelength selective mask or filter may produce an aiming pattern of a defined color, different from a color of an illumination field. Such may eliminate the need for a separate, distinct source of light or illumination for an aiming beam subsystem. The described structures and methods may reduce size, reduce parts count, and/or simplify manufacture. | 02-26-2015 |
20150181109 | TWO-DIMENSIONAL IMAGER WITH SOLID-STATE AUTO-FOCUS - An imaging system having a solid-state auto focusing system advantageously images broadband light reflected from an object to be imaged using a lens objective having chromatic aberration, which focuses different colors of light at different focal planes. Using the color information in the focal planes in conjunction with an object distance determined by a range finder, a luminance plane is constructed that has a focused image of the object. The system provides the focused image of the object without the use of any moving parts. | 06-25-2015 |
20160026838 | AIMING IMAGERS - A scanner system is operable for gathering graphic data from a scan target. The scanner system has a single illumination source component operable for generating light, for aiming the scanner system with a filtered beam of the generated light directed at the scan target, and for illuminating the scan target with the directed light. The scanner system also has a detector component operable for sensing a reflection from the scan target, the sensed reflection including a portion of the directed light with which the scan target is illuminated, and for detecting information in the sensed reflection, in which the information detected in sensed reflection corresponds to the graphic data gathered from the scan target. | 01-28-2016 |
20160109224 | DIMENSIONING SYSTEM WITH MULTIPATH INTERFERENCE MITIGATION - A system and method for measuring an item's dimensions using a time-of-flight dimensioning system is disclosed. The system and method mitigate multipath distortion and improve the accuracy of the measurements, especially in a mobile environment. To mitigate the multipath distortion, an imager captures an image of an item of interest. This image is processed to determine an illumination region corresponding item-of-interest's size, shape, and position. Using this information, an adjustable aperture's size, shape, and position are controlled so the light beam used in the time-of-flight analysis substantially illuminates the illumination region without first being reflected. | 04-21-2016 |