DATA READER HAVING COMPACT ARRANGEMENT

• US 20120018516A1
• Filed: 07/21/2011
• Published: 01/26/2012
• Est. Priority Date: 07/23/2010
• Status: Active Grant

• Current Assignee: Datalogic Adc, Inc. (Datalogic S.p.A.)
• Original Assignee: Datalogic Scanning Incorporated (Datalogic S.p.A.)
• Inventors: Gao, WenLiang, Shearin, Alan, Acosta, Jorge L., Huss, Paul R., Thompson, Ryan B., Hoskinson, Jeffrey J.
• Granted Patent: US 8,919,651 B2
• Time in Patent Office: Days
• US Class Current: 235/454
• CPC Class Codes: G06K 7/10722 Photodetector array or CCD scanning
• CPC Class Codes: G06K 7/1417 2D bar codes

Abstract

A data reader including one or more imagers or imager assemblies that capture two-dimensional images of an object disposed in a view volume, the data reader having fold minors and other component arrangement that enable compact and efficient component configuration.

Claims

1. An optical code reader for capturing an image of an object in a view volume, comprising

a housing having an outer opening at a front face thereof;

a window disposed in the housing proximate to the outer opening;

a planar printed circuit board disposed toward a rear of the housing and oriented at a first acute angle to the window;

a primary minor mounted in the housing at a second acute angle to the window for directing a first perspective of the object in the view volume along a first view segment path;

an imager mounted on the printed circuit board proximate the primary mirror;

a secondary mirror disposed in the first view segment path to direct the first perspective of the object toward the imager, the imager being operative for capturing a two-dimensional image of the object from the first perspective;

an illumination system mounted on the printed circuit board for directing illumination into the view volume,

wherein the illumination system and the imager are disposed on a common side of the printed circuit board.

2. An optical code reader according to claim 1 wherein the printed circuit board and the primary mirror are disposed parallel to one another.

3. An optical code reader according to claim 1 wherein the printed circuit board is disposed at a first acute angle to the window of between 30°

and 60°

.

4. An optical code reader according to claim 1 wherein the primary mirror is disposed at a second acute angle to the window of between 30°

and 60°

.

5. An optical code reader according to claim 1 further comprising an optics chassis, wherein the primary minor and the secondary mirror are aligned by and mounted on the optics chassis, therein the optics chassis is mounted onto the printed circuit board.

6. An optical code reader according to claim 5 wherein the optics chassis comprises a single piece molded part onto which the primary mirror and secondary mirror are mounted.

7. An optical code reader according to claim 1 wherein the illumination system and the imager are disposed on a common side of the printed circuit board but at opposite ends of the primary mirror.

8. A method for reading an optical code on an object in a view volume, comprising the steps of:

positioning a first imager, a primary minor, and an illumination system within a reader housing and such that the first imager, the primary minor, and the illumination system are supported on a common circuit board;

positioning a window proximate and parallel to an opening at one end the reader housing, wherein the circuit board is oriented at an acute angle to the window;

directing a first field of view of the first imager via a first minor set from a position of the first imager into the view volume from a first perspective;

forming a first image at the first imager of the first field of view into the view volume from the first perspective;

capturing the first image with the first imager;

processing the optical code based on one or more images captured by the first imager.

9. A method according to claim 8 further comprising

providing an optics chassis of a single piece construction, the optics chassis having mounting positions for the primary minor and a secondary minor

10. An optical code reader for capturing an image of an object in a view volume, comprising

a housing having an outer opening at a front face thereof;

a 2D imager disposed in a lower portion of the housing;

a window disposed in the housing proximate to the outer opening and parallel thereto;

a primary minor mounted at first angle to the window for directing a first 2D perspective of the object in the view volume downwardly and forwardly along a first view path segment;

a secondary mirror mounted in the first view path at a second angle to the window for directing the first 2D perspective of the object from the primary minor rearwardly along a second view segment path;

a tertiary minor mounted in the second view path for directing the first 2D perspective of the object from the secondary mirror downwardly to the imager.

11. An optical code reader for capturing an image of an object in a view volume, comprising

a housing having an outer opening;

an imager disposed in the housing;

a window disposed in the housing proximate to the outer opening;

a mirror disposed in the housing for directing a perspective of the object in the view volume along a view path segment toward the imager, wherein the mirror is mounted behind an inner opening in the housing, the minor having a visible area defined by the inner opening.

12. An optical code reader according to claim 11 wherein the mirror is mounted via two-side tape secured on a top reflective surface of the mirror.