Symbol Technologies, LLC

Tsi David Shi

Igor R Vinogradov

Mark J Krichever

Vladimir P Gurevich

Alex Breytman

Brad Carlson

Paul Dvorkis

Duanfeng He

Chinh Tan

Dmitriy Yavid

Mehul M Patel

Bradley S Carlson

Joseph D Giordano

Thomas D Bianculli

Heng Zhang

Rong Liu

Eduard Kogan

Ming Yu

Nicholas Buongervino

An imaging-based bar code reader including: an imaging system for imaging a target bar code within a field of view of the imaging system and projecting light from the field of view onto a sensor array, the imaging system generating image frames of the field of view of the imaging system; the imaging systems including an imaging lens assembly having a plurality of lens and a selection drive mechanism to select between a first optical zoom position defining a first focal length and a first field of view for imaging a target bar code at a close range and a second optical zoom position defining a second focal length and a second field of view for imaging a target bar code at a far range, the second focal length being greater than the first focal length.

Two position zoom lens assembly for an imaging-based bar code reader

The disclosed bar code reader includes an auto-focusing component for rapidly producing in focus images. An imaging system makes use of an aiming pattern that impinges upon the coded indicia of a target. The imaging system includes a light monitoring pixel array and a focusing lens that is fixed with respect to the pixel array for transmitting an image of the target object onto the pixel array. The imaging system also includes a movable mirror mounted for movement along a path of travel to reflect light passing through the focusing lens onto the pixel array. A drive motor moves the mirror relative the lens to adjust a focus of an image of the object formed at the pixel array. An automatic focusing component of the imaging system analyzes the aiming pattern reflected from the target object and projected onto the pixel array by the lens. The automatic focusing component issues commands to the drive motor causing the mirror to move along its path of travel to a suitable position for properly focusing the target object onto the pixel array.

Compact autofocus bar code reader with moving mirror

A portable electro-optical scanner for reading a target bar code having a plurality of bar code elements. The portable scanner includes: a housing supporting a scanning module and an optic system. The scanning module electro-optically scans the target bar code with a scanning beam and collects reflected light returning from the bar code. The scanning module includes a beam source emitting a scanning beam, beam directing apparatus causing the scanning beam to be repetitively scanned along a scanning plane intersecting the target bar code and photodetector circuitry receiving light from the target bar code. The optic system includes an exit window, a light collection lens and a reflective surface. The scanning beam passes through the exit window upon exiting the housing. The light collection lens receives reflected light from the target bar code and directing the reflected light toward a focal point. The focal point lying on the scanning plane of the scanning beam. The reflective surface is disposed between the light collection lens and the focal point to redirect the reflected light passing through the light collection lens toward the photodetector circuitry.

Electro-optical scanner having exit window with light collecting optics

An interface assembly is provided for interfacing an imaging engine having an adjustable lens assembly to a circuitry assembly of an optical code reader system, the interface assembly includes a first coupling circuitry assembly for transmission of at least one input signal in a first direction from the circuitry assembly toward the imaging engine, the at least one input signal including at least one focus control signal for controlling the lens assembly for selecting a focus position of at least two focus positions, and a second coupling circuitry assembly for transmission of at least one output signal in a second direction from the imaging engine toward the circuitry assembly, the at least one output signal including at least one pixel data signal, wherein the at least one pixel data signal is indicative of light sensed by a photo sensor array of the imaging engine. Preferably, the imaging engine is removably positioned and/or dimensioned and configured to fit within a predetermined form factor.

Interface for interfacing an imaging engine to an optical code reader

Several optical systems for imaging engines of imaging optical code readers are disclosed. Each optical system includes the abilities to change the depth of field of the imaging field and to adjust a focus quality of the imaging field. The disclosed structures for changing the depth of field of the disclosed optical systems allow for the automatic or manual selection of one of a plurality of depths of field.

Imaging optical code reader having selectable depths of field

An image scanning device is provided which includes a system for determining the distance to a target to be scanned. The image scanning device includes an optical system and an image sensor array for focusing a light beam and imaging the target. The device preferably includes an automatic focusing system for adjusting the position of the optical system in order to adjust the focal point, and thereby focus the image of the target onto the image sensor array. In one embodiment of the image scanning device, the distance is determined by analyzing a collimated aiming pattern formed by collimating the light beam. In another embodiment, the distance is determined by analyzing a speckle pattern caused by the speckle effect upon the light beam hitting the target.

Image scanning device having a system for determining distance to a target

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Stony Brook, NY, United States of America

Tsi David Shi