21
Paul Dvorkis, Howard Shepard, Simon Bard, Joseph Katz, Edward Barkan: Scan pattern generators for bar code symbol readers. Symbol Technolgoies, January 18, 1994: US05280165 (41 worldwide citation)

A scan pattern generator for use in a bar code reader which uses a single drive (one coil and one magnet) to produce movement of a reflective surface so as to produce an oscillating movement of the surface in two directions, thereby forming a raster-type scanning pattern when a light beam is reflect ...


22
Vladimir Gurevich, Mark Krichever, Boris Metlitsky, Paul Dvorkis: Beam splitting optics in bar code readers. Symbol Technologies, Kirschstein et al, April 28, 1998: US05744815 (41 worldwide citation)

An optical reader for reading indicia such as bar codes comprises a first and second light source for generating first and second light beams of mutually orthogonal polarization orientations, and a polarized beam splitter for combining the beams without the effects of parallax or vignetting. One of ...


23
Paul Dvorkis, Edward Barkan, Howard Shepard, Joseph Giordano, Yuri Gofman, Robert Doran, John Barile, Henry Grosfeld, Avi Korenshtein, Kevin Cordes, Ophir Chernin, Mitch Maiman, Patrick Wallace: Bar code reader with an integrated scanning component module mountable on printed circuit board. Symbol Technologies, Kirschstein et al, August 19, 2003: US06607132 (39 worldwide citation)

A bar code reader has an integrated scanning component module which is mountable on a printed circuit board. In one embodiment, the module may include the digitizer/decoder electronics, enabling the module to be used with a generic PCB. In some embodiments, the module includes a high speed optical s ...


24
Paul Dvorkis, Howard Shepard: Slim scan module with interchangeable scan element. Symbol Technologies, November 22, 1994: US05367151 (38 worldwide citation)

An optical scanning module has a metal base, a first circuit board mounted across one end of the metal base and a second circuit board mounted orthogonal to the first circuit board. The metal base supports a light emitter for producing a scanning beam and serves as a heat sink for the emitter. A fle ...


25
Paul Dvorkis, Howard Shepard: Slim scan module with interchangeable X-Y scan element. Symbol Technologies, Kirschstein et al, December 16, 1997: US05698835 (35 worldwide citation)

In an optical scanning module, for reading indicia with portions of differing light reflectivity, having a light emitter assembly for emitting a light beam towards the indicia, and a detector for receiving light reflected back from the indicia and producing an electrical signal corresponding to the ...


26
Simon Bard, Askold Strat, Paul Dvorkis: Scanner module for symbol scanning system. Symbol Technologies, January 23, 1996: US05486944 (34 worldwide citation)

An optical scanner module for directing a light beam to scan an optically encoded symbol includes an optical element mounted for oscillatory motion to scan the light beam in one direction by a flex element capable of torsional flexure. This oscillatory motion is induced by the interacting magnetic f ...


27
Costanz o slashed diFazio, Thomas Mazz, Chinh Tan, Miklos Stern, Henry Grossfeld, Paul Dvorkis, Peter Fazekas, Yajun Li, Joseph Katz, Askold Strat, Greg Martino: Packaged mirror including mirror travel stops. Symbol Technologies, Finnegan Henderson Farabow Garrett & Dunner L, May 9, 2000: US06059188 (34 worldwide citation)

An integrated optical module for an optical scanner has a lens spaced from a vertical-cavity surface-emitting laser (VCSEL) by a spacer of defined dimensions. The module, in an alternative embodiment, includes a wafer frame, a suspended mirror mounted for oscillation on the frame, a wafer substrate ...


28
Paul Dvorkis, Alex Breytman, Mark Krichever, Brad Carlson, Tsi David Shi: Imaging optical code reader having selectable depths of field. Symbol Technologies, Carter DeLuca Farrell & Schmidt, April 11, 2006: US07025271 (34 worldwide citation)

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 ...


29
Lisa Courtney, Richard Wienecke, Thomas Boehm, Edward Barkan, Paul Dvorkis: Scan pattern generator convertible between multiple and single line patterns. Symbol Technologies, Kirschstein et al, June 19, 2001: US06247647 (34 worldwide citation)

An arrangement for and a method of reading bar code symbols on a target to move a light beam emitted by a light source in a multiple line, scan pattern during a scan period in a first operational mode. Upon selection of a second operational mode by a user, a controller intermittently operates and en ...


30
Paul Dvorkis, Edward Barkan, Harold Charych, James Giebel, Stephen Osterweil, Sundeep Kumar, John Barile, Paul R Poloniewicz, Anthony D Biuso, Steven M Chew: Laser scanner for controlling the optical scanning of bar codes. Symbol Technologies, Mitchell S Feller, Clifford Chance Rogers & Wells, February 19, 2002: US06348773 (34 worldwide citation)

A scanner determines whether a target is a bar code symbol and, if so, whether that symbol is one-dimensional or two-dimensional. For two-dimensional symbols, the scanner aligns a scanning pattern with the symbol and expands the scanning pattern to reach only to the top and bottom edges of the symbo ...