Optical code reader and methods and articles therefor
First Claim
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1. An optical code reader comprising:
- an emitter;
a detector;
an optical head having a first aperture and a second aperture;
a first waveguide coupling the emitter to the first aperture;
a second waveguide coupling the detector to the first aperture; and
a third waveguide coupling the detector to the second aperture.
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Abstract
A method comprises steps of sensing a first user action, transmitting a first optical message in response to the first user action, and performing at least one optical code reading step in response to non-receipt of a valid response to the first optical message. An apparatus to perform the aforementioned steps and an article of manufacture to direct the aforementioned steps are disclosed.
102 Citations
17 Claims
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1. An optical code reader comprising:
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an emitter;
a detector;
an optical head having a first aperture and a second aperture;
a first waveguide coupling the emitter to the first aperture;
a second waveguide coupling the detector to the first aperture; and
a third waveguide coupling the detector to the second aperture. - View Dependent Claims (2, 3, 10, 11)
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4. An optical code reader comprising:
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an emitter;
a detector;
an optical head comprising a body and a first aperture;
a first waveguide coupling the emitter to the first aperture;
a second waveguide coupling the detector to the first aperture; and
a visible indicator to provide an externally-visible indication through the body. - View Dependent Claims (5, 6, 7, 8, 9, 13, 14, 15, 16, 17)
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12. An optical code reader comprising:
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an emitter;
a detector;
an optical code reader circuit in communication with the emitter and the detector;
an optical head having a first aperture, a second aperture, and a body, the body housing at least one wire coupled to the emitter and at least one wire coupled to the detector;
a visible indicator to provide an externally-visible indication through the body;
a first waveguide coupling the emitter to the first aperture;
a second waveguide coupling the detector to the first aperture; and
a third waveguide coupling the detector to the second aperture.
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Specification