Image sensor based optical reader
First Claim
1. An optical reader for reading target indicia, said optical reader comprising:
- an imaging subsystem including an image sensor and a lens assembly for focusing light on said image sensor;
a control circuit in communication with said imaging subsystem; and
a multiple color emitting illumination subsystem for directing light toward a target, said illumination subsystem being in communication with said control circuit, said illumination subsystem comprising at least two independently drivable light emitting elements;
wherein said control circuit is adapted to sense a condition present relative to said target, and wherein said control circuit is further adapted to change a color emitted by said illumination subsystem in response to a sensed condition, said sensed condition being a sensed reader-to-target distance.
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Accused Products
Abstract
There is set forth herein an optical reader for reading target indicia. The said optical reader in one embodiment can comprise an imaging subsystem including an image sensor and a lens assembly for focusing light on said image sensor. The optical reader in one embodiment can comprise a control circuit in communication with said imaging subsystem. The optical reader in one embodiment can comprise an illumination subsystem in communication with a control circuit. The illumination subsystem in one embodiment can comprise at least one multiple color-emitting light source. The at least one multiple color-emitting light source in one embodiment can comprise at least two independently drivable light emitting elements.
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Citations
26 Claims
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1. An optical reader for reading target indicia, said optical reader comprising:
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an imaging subsystem including an image sensor and a lens assembly for focusing light on said image sensor; a control circuit in communication with said imaging subsystem; and a multiple color emitting illumination subsystem for directing light toward a target, said illumination subsystem being in communication with said control circuit, said illumination subsystem comprising at least two independently drivable light emitting elements; wherein said control circuit is adapted to sense a condition present relative to said target, and wherein said control circuit is further adapted to change a color emitted by said illumination subsystem in response to a sensed condition, said sensed condition being a sensed reader-to-target distance. - View Dependent Claims (2, 3, 4, 6)
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5. An optical reader for reading target indicia, said optical reader comprising:
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an imaging subsystem including an image sensor and a lens assembly for focusing light on said image sensor; a control circuit in communication with said imaging subsystem; and a multiple color emitting illumination subsystem for directing light toward a target, said illumination subsystem being in communication with said control circuit, said illumination subsystem comprising at least two independently drivable light emitting elements; wherein said imaging subsystem includes a color image sensor, wherein said control circuit is adapted to sense a color present in said target using the color image sensor, and wherein said control circuit is further adapted to change a color emitted by said illumination subsystem in response to said color present. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. An optical reader for reading target indicia, said optical reader comprising:
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an imaging subsystem including an image sensor and a lens assembly for focusing light on said image sensor; a control circuit in communication with said imaging subsystem; and a multiple color emitting illumination subsystem for directing light toward a target, said illumination subsystem being in communication with said control circuit, said illumination subsystem comprising at least two independently drivable light emitting elements; wherein said control circuit is adapted to change a color emitted by said illumination subsystem when an operating mode of said reader changes from a decoding attempt mode to a successful decode mode, so that a change in color emitted by said illumination subsystem indicates a good read. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. An optical reader for reading target indicia, said optical reader comprising:
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an imaging subsystem including an image sensor and a lens assembly for focusing light on said image sensor; a control circuit in communication with said imaging subsystem; and a multiple color emitting illumination subsystem for directing light toward a target, said illumination subsystem being in communication with said control circuit, said illumination subsystem comprising at least two independently drivable light emitting elements; wherein said control circuit is adapted to change a color emitted by said illumination subsystem from a first color to a second color prior to a second decode attempt, if a first decode attempt using said first color is unsuccessful. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification