Patents by Inventor Tsi Shi
Tsi Shi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20240143956Abstract: A scan engine for capturing at least one image of an object appearing in an imaging field of view (FOV) is provided that includes an imaging system, illumination system, aiming system, and a first and second chassis. The imaging system includes a lens holder and at least one lens disposed within the lens holder and both a far imaging system and a near imaging system for capturing images across multiple fields of view at different distances. The illumination system and aiming system are physically positioned to provide illumination of a target in the near and/or far fields of view, and provide an aiming pattern to the near and/or far fields of view.Type: ApplicationFiled: October 2, 2023Publication date: May 2, 2024Inventors: Vladimir Gurevich, Alexander J. Naney, Carl D. Wittenberg, Michael A. Mottola, Igor Vinogradov, David Tsi Shi, Chinh Tan
-
Publication number: 20240147040Abstract: An optical assembly for an autofocus lens system for imaging an object appearing in an imaging field of view (FOV) is provided. The optical assembly includes a compensator lens assembly disposed along an optical axis, with the compensator lens assembly configured to receive light along the optical axis and to provide tuning of a flange focal length of the optical assembly. A variable focus assembly, including a variable focus optical element, is disposed along the optical axis to receive light from the compensator lens assembly. The variable focus optical element has a tunable focal plane. A fixed focus optical group is disposed along the optical axis to receive light from the variable focus assembly, the fixed focus optical group is configured to focus the light at the flange focal length of the optical assembly.Type: ApplicationFiled: October 31, 2022Publication date: May 2, 2024Inventors: Alexander J. Naney, Igor Vinogradov, Carl D. Wittenberg, David Tsi Shi, Vladimir Gurevich
-
Patent number: 11960961Abstract: A system and methods for providing aiming guidance for an imaging system. The system includes an illumination field source configured to provide illumination along a illumination optical axis to (i) illuminate a target and (ii) indicate a near field of view of the imaging system and a far field aiming source configured to provide a radiation pattern along an aiming optical axis to indicate a far field of view of the imaging system. Near field optics are configured to receive the first illumination from the near field illumination source and to form the first illumination to provide illumination to, and indicate to a user or machine vision system, the near field of view of the imaging system, and far field optics are configured to receive radiation from the aiming source and provide the radiation pattern to the far field to indicate the far field of view of the imaging system.Type: GrantFiled: October 12, 2021Date of Patent: April 16, 2024Assignee: Zebra Technologies CorporationInventors: Vladimir Gurevich, Carl D. Wittenberg, David Tsi Shi, Chinh Tan
-
Patent number: 11934911Abstract: Method and systems for driving an aiming assembly of a barcode imager are provided. An example method includes obtaining an operating mode of the barcode imager having an aiming assembly and, in response, determining a duty cycle of an aiming pulse of the aiming assembly. That duty cycle is determined as a percentage of a frame duration of an imager sensor and, further, such that simultaneous constraints are satisfied by the aiming pulse. The constraints include a simultaneous frame duration-independent, peak pulse optical power constraint and a frame duration-dependent heat dissipation constraint.Type: GrantFiled: October 12, 2021Date of Patent: March 19, 2024Assignee: Zebra Technologies CorporationInventors: Vladimir Gurevich, David Tsi Shi, Jason S. Mak, Thomas Lackemann, Matthew D. Blasczak
-
Publication number: 20230385578Abstract: Methods and apparatus for configuring reduced decode ranges for barcode scanners are disclosed. An example method includes determining a closest focus distance of a plurality of focus distances at which a barcode placed at a furthest limit of a reduced decode range can be successfully decoded; determining a furthest focus distance of the plurality of focus distances at which the barcode placed at a closest limit of the reduced decode range can be successfully decoded; determining a subset of the plurality of focus distances that consists of the closest focus distance, the furthest focus distance, and focus distances between the closest focus distance and the farthest focus distance; and configuring the barcode scanner to only use the subset of focus distances during subsequent attempts to decode barcodes.Type: ApplicationFiled: May 31, 2022Publication date: November 30, 2023Inventors: Vladimir Gurevich, Mehaboob Kumbalakkuzhiyil, Andrew Cornell, Christopher W. Brock, David Tsi Shi
-
Publication number: 20230385576Abstract: Methods and systems to implement a miniature long range imaging engine with auto-focus, auto-zoom, and auto-illumination are disclosed herein. An example method includes detecting, by a microprocessor, a presence of an aim light pattern within the FOV; determining, by the microprocessor and in response to the detecting, a target distance of an object in the FOV based on a position of the aim light pattern in the FOV, the target distance being a distance from the imaging engine to the object; causing, by the microprocessor, a variable focus optical element to focus on the object based on the target distance; and responsive to making a first determination, by the microprocessor, selecting, based on the target distance, one of a plurality of zoom operation modes.Type: ApplicationFiled: August 14, 2023Publication date: November 30, 2023Inventors: Vladimir Gurevich, Christopher W. Brock, David Tsi Shi, David P. Goren, Carl D. Wittenberg
-
Patent number: 11790197Abstract: Methods and systems to implement a miniature long range imaging engine with auto-focus, auto-zoom, and auto-illumination are disclosed herein. An example method includes detecting, by a microprocessor, a presence of an aim light pattern within the FOV; determining, by the microprocessor and in response to the detecting, a target distance of an object in the FOV based on a position of the aim light pattern in the FOV, the target distance being a distance from the imaging engine to the object; causing, by the microprocessor, a variable focus optical element to focus on the object based on the target distance; responsive to making a first determination, by the microprocessor, selecting, based on the target distance, one of a plurality of zoom operation modes; and responsive to making a second determination, by the microprocessor, selecting, based on the target distance, one of a plurality of illumination modes.Type: GrantFiled: October 11, 2021Date of Patent: October 17, 2023Assignee: Zebra Technologies CorporationInventors: Vladimir Gurevich, Christopher W. Brock, David Tsi Shi, David P. Goren, Carl D. Wittenberg
-
Patent number: 11775783Abstract: A scan engine for capturing at least one image of an object appearing in an imaging field of view (FOV) is provided that includes an imaging system, illumination system, aiming system, and a first and second chassis. The imaging system includes a lens holder and at least one lens disposed within the lens holder and both a far imaging system and a near imaging system for capturing images across multiple fields of view at different distances. The illumination system and aiming system are physically positioned to provide illumination of a target in the near and/or far fields of view, and provide an aiming pattern to the near and/or far fields of view.Type: GrantFiled: October 31, 2022Date of Patent: October 3, 2023Assignee: Zebra Technologies CorporationInventors: Vladimir Gurevich, Alexander J. Naney, Carl D. Wittenberg, Michael A. Mottola, Igor Vinogradov, David Tsi Shi, Chinh Tan
-
Publication number: 20230114004Abstract: Methods and systems to implement a miniature long range imaging engine with auto-focus, auto-zoom, and auto-illumination are disclosed herein. An example method includes detecting, by a microprocessor, a presence of an aim light pattern within the FOV; determining, by the microprocessor and in response to the detecting, a target distance of an object in the FOV based on a position of the aim light pattern in the FOV, the target distance being a distance from the imaging engine to the object; causing, by the microprocessor, a variable focus optical element to focus on the object based on the target distance; responsive to making a first determination, by the microprocessor, selecting, based on the target distance, one of a plurality of zoom operation modes; and responsive to making a second determination, by the microprocessor, selecting, based on the target distance, one of a plurality of illumination modes.Type: ApplicationFiled: October 11, 2021Publication date: April 13, 2023Inventors: Vladimir Gurevich, Christopher W. Brock, David Tsi Shi, David P. Goren, Carl D. Wittenberg
-
Publication number: 20230112765Abstract: Method and systems for driving an aiming assembly of a barcode imager are provided. An example method includes obtaining an operating mode of the barcode imager having an aiming assembly and, in response, determining a duty cycle of an aiming pulse of the aiming assembly. That duty cycle is determined as a percentage of a frame duration of an imager sensor and, further, such that simultaneous constraints are satisfied by the aiming pulse. The constraints include a simultaneous frame duration-independent, peak pulse optical power constraint and a frame duration-dependent heat dissipation constraint.Type: ApplicationFiled: October 12, 2021Publication date: April 13, 2023Inventors: Vladimir Gurevich, David Tsi Shi, Jason S. Mak, Thomas Lackemann, Matthew D. Blasczak
-
Publication number: 20230114364Abstract: A system and methods for providing aiming guidance for an imaging system. The system includes an illumination field source configured to provide illumination along a illumination optical axis to (i) illuminate a target and (ii) indicate a near field of view of the imaging system and a far field aiming source configured to provide a radiation pattern along an aiming optical axis to indicate a far field of view of the imaging system. Near field optics are configured to receive the first illumination from the near field illumination source and to form the first illumination to provide illumination to, and indicate to a user or machine vision system, the near field of view of the imaging system, and far field optics are configured to receive radiation from the aiming source and provide the radiation pattern to the far field to indicate the far field of view of the imaging system.Type: ApplicationFiled: October 12, 2021Publication date: April 13, 2023Inventors: Vladimir Gurevich, Carl D. Wittenberg, David Tsi Shi, Chinh Tan
-
Patent number: 8657194Abstract: A compact hybrid imaging lens assembly captures return light from a target over a field of view of a linear array of image sensors of a solid-state imager, and projects the captured return light onto the array during electro-optical reading of the target. The assembly includes a plastic lens for optical aberration correction, a glass lens spaced away from the plastic lens along an optical axis, and an aperture stop between the lenses and having an asymmetrical aperture through which the optical axis extends. The glass lens has substantially all the optical power of the imaging lens assembly for thermal stability, and the plastic lens has substantially no optical power. A holder holds the lenses and the aperture stop away from the array. Alignment elements on the plastic lens align the asymmetrical aperture relative to the linear array.Type: GrantFiled: July 1, 2011Date of Patent: February 25, 2014Assignee: Symbol Technologies, Inc.Inventors: Rong Liu, David Tsi-Shi
-
Patent number: 8624985Abstract: A wide angle, athermalized, achromatic, hybrid imaging lens assembly captures return light from a target over a field of view, and projects the captured return light onto an array of image sensors of a solid-state imager during electro-optical reading of the target. The assembly includes a plastic lens group for optical aberration compensation, a glass lens group spaced away from the plastic lens group along an optical axis, and an aperture stop between the lens groups and having an aperture through which the optical axis extends. The glass lens group has substantially all the optical power of the imaging lens assembly for thermal stability, and the plastic lens group has substantially no optical power. A holder holds the lenses and the aperture stop in front of the array.Type: GrantFiled: November 17, 2011Date of Patent: January 7, 2014Assignee: Symbol Technologies, Inc.Inventors: Igor Vinogradov, Vladimir Gurevich, David Tsi-Shi
-
Publication number: 20130128084Abstract: A wide angle, athermalized, achromatic, hybrid imaging lens assembly captures return light from a target over a field of view, and projects the captured return light onto an array of image sensors of a solid-state imager during electro-optical reading of the target. The assembly includes a plastic lens group for optical aberration compensation, a glass lens group spaced away from the plastic lens group along an optical axis, and an aperture stop between the lens groups and having an aperture through which the optical axis extends. The glass lens group has substantially all the optical power of the imaging lens assembly for thermal stability, and the plastic lens group has substantially no optical power. A holder holds the lenses and the aperture stop in front of the array.Type: ApplicationFiled: November 17, 2011Publication date: May 23, 2013Applicant: Symbol Technologies, Inc.Inventors: Igor VINOGRADOV, Vladimir Gurevich, David Tsi-Shi
-
Publication number: 20130119137Abstract: An apparatus and method for imaging a target, includes a housing having a presentation area, a solid-state imaging sensor having an imaging array of image sensors looking at a field of view that extends through the presentation area to the target, and an imaging lens assembly for capturing return light over the field of view from the target through the presentation area, and for projecting the captured return light onto the imaging array during imaging of the target. The assembly has a plurality of lenses, an aperture stop, and a holder for holding the lenses and the aperture stop in spaced relation along an optical axis. The aperture stop has a non-rotationally symmetrical aperture through which the optical axis extends. Alignment elements on the imaging lens assembly are used to align the non-rotationally symmetrical aperture with the imaging array.Type: ApplicationFiled: November 14, 2011Publication date: May 16, 2013Applicant: SYMBOL TECHNOLOGIES, INC.Inventors: Rong LIU, David TSI-SHI, Jean TU, Michael VEKSLAND
-
Patent number: 8430314Abstract: An apparatus and method for imaging a target, includes a housing having a presentation area, a solid-state imaging sensor having an imaging array of image sensors looking at a field of view that extends through the presentation area to the target, and an imaging lens assembly for capturing return light over the field of view from the target through the presentation area, and for projecting the captured return light onto the imaging array during imaging of the target. The assembly has a plurality of lenses, an aperture stop, and a holder for holding the lenses and the aperture stop in spaced relation along an optical axis. The aperture stop has a non-rotationally symmetrical aperture through which the optical axis extends. Alignment elements on the imaging lens assembly are used to align the non-rotationally symmetrical aperture with the imaging array.Type: GrantFiled: November 14, 2011Date of Patent: April 30, 2013Assignee: Symbol Technologies, Inc.Inventors: Rong Liu, David Tsi-Shi, Jean Tu, Michael Veksland
-
Publication number: 20130001308Abstract: A compact hybrid imaging lens assembly captures return light from a target over a field of view of a linear array of image sensors of a solid-state imager, and projects the captured return light onto the array during electro-optical reading of the target. The assembly includes a plastic lens for optical aberration correction, a glass lens spaced away from the plastic lens along an optical axis, and an aperture stop between the lenses and having an asymmetrical aperture through which the optical axis extends. The glass lens has substantially all the optical power of the imaging lens assembly for thermal stability, and the plastic lens has substantially no optical power. A holder holds the lenses and the aperture stop away from the array. Alignment elements on the plastic lens align the asymmetrical aperture relative to the linear array.Type: ApplicationFiled: July 1, 2011Publication date: January 3, 2013Applicant: SYMBOL TECHNOLOGIES, INC.Inventors: Rong LIU, David TSI-SHI
-
Patent number: 8169589Abstract: Working range and beam cross-section are adjusted in an electro-optical reader for reading indicia by applying voltages to electrodes in one or more liquid crystal zone plates in which the index of refraction is changed in different regions of each zone plate.Type: GrantFiled: March 18, 2008Date of Patent: May 1, 2012Assignee: Symbol Technologies, Inc.Inventor: David Tsi-Shi
-
Patent number: 8167207Abstract: A device including a housing, an imaging engine and a transparent exit window. The imaging engine is located within the housing. The exit window is in the housing allowing light to pass from an exterior of the device to the imaging engine within the housing. The exit window has a plurality of segments. Each of the segments has a corresponding optical property.Type: GrantFiled: July 15, 2008Date of Patent: May 1, 2012Assignee: Symbol Technologies, Inc.Inventors: David Tsi Shi, Alan J. Epshteyn, Edward Voli
-
Patent number: RE46984Abstract: A method and apparatus for using in an imaging scanner. The apparatus includes a solid-state imager, an imaging lens assembly comprising a base lens and a MEMS lens, and an electric circuitry operative to transfer the image captured by the solid-state imager to a decoding circuitry. The imaging lens assembly is configured to focus light reflected from the target object onto the array of photosensitive elements in the solid-state imager by passing the light reflected from the target object through the base lens followed by the MEMS lens.Type: GrantFiled: August 12, 2015Date of Patent: August 7, 2018Assignee: Symbol Technologies, LLCInventor: David Tsi Shi