US 2017/0249490 A1Published application

Module or arrangement for, and method of, reading a target by image capture with an imaging reader having offset imaging and aiming systems

AssigneeSymbol Technologies, Inc.

InventorsMARK E. DRZYMALA, EDWARD D. BARKAN, DARRAN M. HANDSHAW

Life of this patent

Estimating the term…

Loading patent…

Abstract

An imaging sensor of an imaging reader senses return light from a target to be read by image capture along an imaging axis over a field of view that extends along mutually orthogonal, horizontal and vertical axes. Two aiming light assemblies are offset from the sensor and are spaced apart along the horizontal axis at opposite sides of the sensor, and direct two aiming light lines, each having a predetermined brightness, at the target. The aiming lines are collinear along the horizontal axis and have inner linear end regions that overlap on the target to form a bright, linear, aiming mark having a brightness greater than the predetermined brightness to visually indicate a center zone of the field of view, as well as outer linear end regions that visually indicate approximate end limits of the field of view, over a range of working distances.

Claims20

Dependent claims

An imaging module for reading a target by image capture over a range of working distances away from the module, comprising:

an imaging system including an imaging sensor for sensing light returning from the target along an imaging axis over a field of view that extends along mutually orthogonal, horizontal and vertical axes that are generally perpendicular to the imaging axis, the field of view having a width along the horizontal axis and a height along the vertical axis;
and
an aiming light system offset from the imaging system and including a pair of aiming light assemblies spaced apart along the horizontal axis at opposite sides of the imaging sensor, and operative for directing a pair of aiming light lines, each having a predetermined brightness, along a pair of aiming axes at the target, the aiming light lines being collinear along the horizontal axis and having inner linear end regions that extend past the imaging axis and that overlap on the target to form a bright, linear, aiming mark having a brightness greater than the predetermined brightness to visually indicate a center zone of the field of view over the range of working distances;
each aiming light line having a line width that is a first fraction of the width of the field of view, and a line height that is a second fraction of the height of the field of view, the first fraction being greater than the second fraction.

1 more element

An imaging reader for reading a target by image capture over a range of working distances away from the reader, comprising:

a housing having a light-transmissive window;
and
an imaging module mounted in the housing, the module having an imaging system including an imaging sensor for sensing light returning from the target through the window along an imaging axis over a field of view that extends along mutually orthogonal, horizontal and vertical axes that are generally perpendicular to the imaging axis, the field of view having a width along the horizontal axis and a height along the vertical axis, and
an aiming light system offset from the imaging system and including a pair of aiming light assemblies spaced apart along the horizontal axis at opposite sides of the imaging sensor, and operative for directing a pair of aiming light lines, each having a predetermined brightness, along a pair of aiming axes through the window at the target, the aiming light lines being collinear along the horizontal axis and having inner linear end regions that extend past the imaging axis and that overlap on the target to form a bright, linear, aiming mark having a brightness greater than the predetermined brightness to visually indicate a center zone of the field of view over the range of working distances;
each aiming light line having a line width that is a first fraction of the width of the field of view, and a line height that is a second fraction of the height of the field of view, the first fraction being greater than the second fraction.

2 more elements

A method of reading a target by image capture over a range of working distances away from an imaging reader, comprising:

sensing light returning from the target through the window along an imaging axis over a field of view that extends along mutually orthogonal, horizontal and vertical axes that are generally perpendicular to the imaging axis, the field of view having a width along the horizontal axis and a height along the vertical axis;
directing a pair of aiming light lines, each having a predetermined brightness, along a pair of aiming axes at the target;
configuring the aiming light lines to be collinear along the horizontal axis and to have inner linear end regions that extend past the imaging axis and that overlap on the target to form a bright, linear, aiming mark having a brightness greater than the predetermined brightness to visually indicate a center zone of the field of view over the range of working distances. each aiming light line having a line width that is a first fraction of the width of the field of view, and a line height that is a second fraction of the height of the field of view, the first fraction being greater than the second fraction;
and
positioning the bright aiming mark on the target.

2 more elements

Dependencies are inferred from the claim text.