US 2019/0057232 A1 · ILLUMINATOR FOR A BARCODE SCANNER

Abstract

An illuminator is provided, comprising a support frame arranged symmetrically around an optical axis of an optical sensor. The illuminator includes at least one light bar connected to the support frame. At least one light source is connected to the support frame, wherein each of the at least one light source is configured to direct light towards one of the opposing ends of one of the at least one light bar. The illuminator further includes a peripheral cover configured to receive light emitted from the front face of each of the at least one light bar. The peripheral cover is further configured to emit dark field illumination at a low incident angle with respect to a plane perpendicular to the optical axis and to emit bright field illumination at a high incident angle with respect to the plane perpendicular to the optical axis.

Claims20

Dependent claims

An illuminator comprising:

a support frame arranged symmetrically around an optical axis of an optical sensor;
at least one light bar connected to the support frame, each light bar having two opposing ends, two opposing edges, a front face, and a back face;
at least one light source connected to the support frame, each light source configured to direct light towards one of the opposing ends of one of the at least one light bar;
and
a peripheral cover configured to receive light emitted from the front face of each light bar, the peripheral cover further configured to emit dark field illumination at a low incident angle with respect to a plane perpendicular to the optical axis and to emit bright field illumination at a high incident angle with respect to the plane perpendicular to the optical axis.

2 more elements

A barcode scanner comprising:

a sensor configured to read a barcode on a surface of an object, the sensor being defined by an optical axis;
and
an illuminator configured to provide dark field illumination at a low incident angle with respect to a plane perpendicular to the optical axis of the sensor and to provide bright field illumination at a high incident angle with respect to the plane perpendicular to the optical axis;
wherein the illuminator comprises:
a support frame arranged symmetrically around the optical axis of the sensor;
a plurality of light bars connected to the support frame, each light bar having two opposing ends, two opposing edges, a front face, and a back face;
a plurality of pairs of light sources connected to the support frame, each pair of the light sources configured to direct light towards opposing ends of a respective light bar;
a peripheral cover configured to receive light emitted from the front face of each light bar and to emit dark field illumination and bright field illumination;
and
a light guiding device arranged between the support frame and the peripheral cover.

7 more elements

Dependencies are inferred from the claim text.

Illuminator for a barcode scanner

Life of this patent

Illuminator for a barcode scanner

Life of this patent

Abstract

Claims20