HYBRID-TYPE BIOPTICAL LASER SCANNING AND DIGITAL IMAGING SYSTEM EMPLOYING DIGITAL IMAGER WITH FIELD OF VIEW OVERLAPPING FIELD OF FIELD OF LASER SCANNING SUBSYSTEM

• US 20130175341A1
• Filed: 01/10/2012
• Published: 07/11/2013
• Est. Priority Date: 01/10/2012
• Status: Abandoned Application

• Current Assignee: Metrologic Instruments Incorporated (Honeywell International Inc.)
• Original Assignee: Metrologic Instruments Incorporated (Honeywell International Inc.)
• Inventors: Kearney, Sean Philip, Giordano, Patrick Anthony
• Application Number:
  US13/347,193
• Publication Number:
  US 20130175341A1
• Time in Patent Office: Days
• US Class Current: 235/440
• CPC Class Codes: G06K 7/1096 the scanner having more than one scanning window, e.g. two substantially orthogonally placed scanning windows for integration into a check-out counter of a super-market

Abstract

A hybrid-type bi-optical bar code symbol reading system having a vertical housing section having a vertical scanning window and a horizontal housing section having a horizontal scanning window, from which laser scanning planes are projected and intersect within a 3D scanning volume defined between the vertical and horizontal scanning windows. A digital imaging module is supported within the vertical section of the system housing and automatically projects a field of view (FOV) within the 3D scanning volume.

Claims

1. A hybrid-type bi-optical bar code symbol reading system supporting a hybrid laser scanning and digital imaging mode of operation, said hybrid-type bi-optical bar code symbol reading system comprising:

a system housing having a vertical housing section having a vertical scanning window and a horizontal housing section having a horizontal scanning window;

a laser scanning subsystem disposed in said system housing, for generating and projecting a plurality of laser scanning planes through said vertical and horizontal scanning windows, which intersect within a 3D scanning volume defined between said vertical and horizontal scanning windows and provide a laser scanning pattern within said 3D scanning volume, for scanning one or more objects within said 3D scanning volume and producing scan data for decode processing;

a scan data processor for processing said scan data produced by said laser scanning subsystem in effort to read a bar code symbol on each object passed through said 3D scanning volume and generating symbol character data for each read bar code symbol;

a digital imaging subsystem, disposed within said vertical section of said system housing, for projecting a field of illumination (FOI) and a coextensive field of view (FOV) through said vertical scanning window, illuminating an object present in said FOV, and capturing and processing one or more digital images of said illuminated object present in said FOV;

a digital image processor for processing said one or more digital images produced by said digital imaging subsystem in effort to read a bar code symbol on each object passed through said FOV; and

a system controller for controlling the operation of said laser scanning subsystem and said digital imaging subsystem during said hybrid laser scanning and digital imaging mode of operation.

2. The hybrid-type bi-optical bar code symbol reading system of claim 1, wherein said laser scanning pattern is an omni-directional laser scanning pattern within said 3D scanning volume.

3. The hybrid-type bi-optical bar code symbol reading system of claim 1, wherein said FOV is focused slightly before said vertical scanning window adjacent said 3D scanning volume.

4. The hybrid-type bi-optical bar code symbol reading system of claim 1, comprising an automatic wake-up detector for detecting the presence of an operator in proximity of said system housing, wherein, when said automatic wake-up detector detects the presence of said operator, said system controller automatically activates:

(i) said laser scanning subsystem causing laser scanning planes to be generated and scanned across said 3D scanning volume, collecting and processing scan data from objects located therein including bar code symbols on the objects to be read; and

(ii) said digital imaging subsystem causing said FOV and FOI to be projected on objects located in said FOV including bar code symbols on the objects to be read.

5. The hybrid-type bi-optical bar code symbol reading system of claim 1, wherein said digital imaging subsystem captures digital images from said FOV at a rate of at least 30 frames per second in a continuous manner.

6. The hybrid-type bi-optical bar code symbol reading system of claim 1, wherein said vertical housing section includes a portal with a peephole, for installing said digital imaging subsystem and allowing said FOV and FOI to project through said peephole and then through said vertical scanning window.

7. The hybrid-type bi-optical bar code symbol reading system of claim 6, wherein said vertical housing section includes one or more laser pattern folding mirrors and said FOV is projected off at least one of said laser scanning pattern folding mirrors prior to being projected through said vertical scanning window.

8. The hybrid-type bi-optical bar code symbol reading system of claim 1, wherein said digital imaging subsystem includes a pair of periscope FOV folding mirrors for projecting the FOV through said vertical housing section and through said vertical scanning window.

9. (canceled)

10. A hybrid-type bi-optical bar code symbol reading system supporting a hybrid laser scanning and digital imaging mode of operation, said hybrid-type bi-optical bar code symbol reading system comprising:

a system housing having a vertical housing section having a vertical scanning window and a horizontal housing section having a horizontal scanning window;

a laser scanning subsystem disposed in said system housing, for generating and projecting a plurality of laser scanning planes through said vertical and horizontal scanning windows, which intersect within a 3D scanning volume defined between said vertical and horizontal scanning windows and provide a laser scanning pattern within said 3D scanning volume, for scanning one or more objects within said 3D scanning volume and producing scan data for decode processing;

a scan data processor for processing said scan data produced by said laser scanning subsystem in effort to read a bar code symbol on each object passed through said 3D scanning volume and generating symbol character data for each read bar code symbol;

a digital imaging subsystem, disposed within said vertical section of said system housing, for projecting a field of view (FOV) through said vertical scanning window within said 3D scanning volume, projecting a field of illumination (FOI) into said FOV without passage through said vertical scanning window so as to illuminate an object present in said FOV, and capturing and processing one or more digital images of the illuminated object present in said FOV;

a digital image processor for processing said one or more digital images produced by said digital imaging subsystem in effort to read a bar code symbol on each object passed through said FOV; and

a system controller for controlling the operation of said laser scanning subsystem and said digital imaging subsystem during said hybrid laser scanning and digital imaging mode of operation.

11. The hybrid-type bi-optical bar code symbol reading system of claim 10, wherein said laser scanning pattern is an omni-directional laser scanning pattern within said 3D scanning volume.

12. The hybrid-type bi-optical bar code symbol reading system of claim 10, wherein said FOV is focused slightly before said vertical scanning window adjacent said 3D scanning volume.

13. The hybrid-type bi-optical bar code symbol reading system of claim 10, comprising an automatic wake-up detector for detecting the presence of an operator in proximity of said system housing, wherein, when said automatic wake-up detector detects the presence of said operator, said system controller automatically activates:

(i) said laser scanning subsystem causing laser scanning planes to be generated and scanned across said 3D scanning volume, collecting and processing scan data from objects located therein including bar code symbols on the objects to be read; and

(ii) said digital imaging subsystem causing said FOV and FOI to be projected on objects located in said FOV including bar code symbols on the objects to be read.

14. The hybrid-type bi-optical bar code symbol reading system of claim 10, wherein said digital imaging subsystem captures digital images from said FOV at a rate of at least 30 frames per second in a continuous manner.

15. The hybrid-type bi-optical bar code symbol reading system of claim 10, wherein said vertical housing section includes a portal with a peephole, for installing said digital imaging subsystem and allowing said FOV and FOI to project through said peephole and then through said vertical scanning window.

16. The hybrid-type bi-optical bar code symbol reading system of claim 15, wherein said vertical housing section includes one or more laser pattern folding mirrors and said FOV is projected off at least one of said laser pattern folding mirrors prior to being projected through said vertical scanning window.

17. The hybrid-type bi-optical bar code symbol reading system of claim 10, wherein said digital imaging subsystem includes a pair of periscope FOV folding mirrors for projecting the FOV through said vertical housing section and through said vertical scanning window.

18-41. -41. (canceled)

42. A barcode symbol reading system, comprising:

a vertical scanning window;

a horizontal scanning window defining a scanning volume between the vertical scanning window and the horizontal scanning window;

a laser scanning subsystem for projecting a plurality of laser scanning planes through the vertical scanning window and the horizontal scanning window into the scanning volume and producing scan data for objects scanned within the scanning volume;

a scan data processor for processing the scan data produced by the laser scanning subsystem to generate data corresponding to barcode symbols on scanned objects;

a digital imaging subsystem for projecting a field of view (FOV) through the vertical scanning window, projecting a field of illumination (FOI) into the FOV, and capturing a digital image of an object in the FOV; and

a digital image processor for processing the digital image captured by the digital imaging subsystem to generate data corresponding to barcode symbols in the digital image.

43. The barcode symbol reading system of claim 42, comprising laser pattern folding mirrors, wherein:

the laser scanning subsystem projects a plurality of the laser scanning planes off the laser pattern folding mirrors and then through the vertical scanning window; and

the digital imaging subsystem projects the FOV through a gap between the folding mirrors.

44. The barcode symbol reading system of claim 42, comprising laser pattern folding mirrors, wherein:

the laser scanning subsystem projects a plurality of the laser scanning planes off the laser pattern folding mirrors and then through the vertical scanning window; and

the digital imaging subsystem projects the FOV off the laser pattern folding mirrors and then through the vertical scanning window.

45. The barcode symbol reading system of claim 42, comprising periscope folding mirrors, wherein the digital imaging subsystem projects the FOV off the periscope folding mirrors and then through the vertical scanning window.