Optical scanner

• US 20070095919A1
• Filed: 10/31/2005
• Published: 05/03/2007
• Est. Priority Date: 10/31/2005
• Status: Active Grant

• Current Assignee: NCR Voyix Corporation
• Original Assignee: NCR Corporation
• Inventors: Aleshire, Rex, Detwiler, Paul
• Granted Patent: US 7,552,874 B2
• Time in Patent Office: Days
• US Class Current: 235/462.39
• CPC Class Codes: G02B 26/12 using multifaceted mirrors
• CPC Class Codes: G06K 7/10693 for omnidirectional scanning
• CPC Class Codes: G06K 7/10871 randomly oriented data-fields, code-marks therefore, e.g. concentric circles-code
• 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

An optical scanner includes a scanner housing including a scan window, a laser light source, reflected light detector and a mirrored polygon spinner. The spinner is arranged both to spin around an axis of rotation and to move so as to displace said axis of rotation.

Claims

1. An optical scanner comprising a scanner housing including a scan window, a laser light source, reflected light detector and a mirrored polygon spinner arranged both to spin around an axis of rotation and to move so as to displace said axis of rotation.

2. The optical scanner of claim 1, wherein the spinner is moved linearly so as displace said axis of rotation.

3. The optical scanner of claim 1, wherein the spinner is mounted on a pivotable mount.

4. The optical scanner of claim 3, wherein the pivotable mount is pivotably mounted to a fixed support on one side of the spinner and to a movable support on the other side of the spinner.

5. The optical scanner of claim 4, wherein the movable mount is a linear actuator, actuation of which causes the pivotable mount to pivot on the fixed support.

6. The optical scanner of claim 1, wherein the axis of rotation is directed substantially towards the scan window.

7. The optical scanner of claim 1, wherein the polygon spinner is externally mirrored.

8. The optical scanner of claim 1, further comprising pattern mirrors arranged to direct light from the polygon spinner through the scan window so as to produce scan lines.

9. The optical scanner of claim 1, further comprising control circuitry in the scanner housing for obtaining bar code information from electrical signals from the reflected light detector.

10. A mirrored polygon spinner assembly, for use with an optical scanner, the assembly comprising a spinner and a means of rotating the spinner, the spinner being arranged both to spin around an axis of rotation and to move so as to displace said axis of rotation.

11. The mirrored polygon spinner assembly of claim 10, wherein the spinner is moved linearly so as displace said axis of rotation.

12. The mirrored polygon spinner assembly of claim 10, wherein the spinner is mounted on a pivotable mount.

13. The mirrored polygon spinner assembly of claim 12, wherein the pivotable mount is pivotably mounted to a fixed support on one side of the spinner and to a movable support on the other side of the spinner.

14. The mirrored polygon spinner assembly of claim 13, wherein the movable mount is a linear actuator, actuation of which causes the pivotable mount to pivot on the fixed support.

15. The mirrored polygon spinner assembly of claim 10, wherein the spinner is externally mirrored.

16. A method of scanning a bar code utilizing an optical scanner comprising a scanner housing including a scan window, a laser light source, reflected light detector and a mirrored polygon spinner arranged both to spin around an axis of rotation and to move so as to displace said axis of rotation, the method comprising positioning the bar code within the scan volume and moving the spinner so as to displace the axis of rotation which in turn causes movement of the scan lines orthogonally to the direction of said scan lines.

17. The method of claim 16, wherein the spinner is pivoted back and forth.