Imaging reader with asymmetrical magnification
First Claim
Patent Images
1. A reader for electro-optically reading indicia, comprising:
- a housing;
a solid-state imager within the housing, for capturing light along an optical axis from the indicia over a field of view;
a controller for controlling the imager to produce an electrical signal indicative of the indicia being read, and for processing the electrical signal to read the indicia; and
an optical converter for optically modifying and asymmetrically magnifying the field of view along mutually orthogonal directions generally perpendicular to the optical axis, and for increasing resolution of the imager along one of said directions.
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Abstract
A solid-state imager is mounted in a reader, such as a bi-optical, dual window, point-of-transaction workstation, for capturing light along an optical axis over a field of view from diverse targets useful for customer identification, customer payment validation, operator surveillance, and coded indicia. An optical converter is located within the housing, for optically modifying and asymmetrically magnifying the field of view along mutually orthogonal directions generally perpendicular to the optical axis, and for increasing resolution of the imager along one of these directions.
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Citations
21 Claims
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1. A reader for electro-optically reading indicia, comprising:
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a housing; a solid-state imager within the housing, for capturing light along an optical axis from the indicia over a field of view; a controller for controlling the imager to produce an electrical signal indicative of the indicia being read, and for processing the electrical signal to read the indicia; and an optical converter for optically modifying and asymmetrically magnifying the field of view along mutually orthogonal directions generally perpendicular to the optical axis, and for increasing resolution of the imager along one of said directions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An assembly for use in electro-optically reading indicia, comprising:
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a solid-state imager for capturing light along an optical axis from the indicia over a field of view; a controller for controlling the imager to produce an electrical signal indicative of the indicia being read, and for processing the electrical signal to read the indicia; and an optical converter for optically modifying and asymmetrically magnifying the field of view along mutually orthogonal directions generally perpendicular to the optical axis, and for increasing resolution of the imager along one of said directions.
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14. An assembly for use in electro-optically reading indicia, comprising:
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means for capturing light along an optical axis from the indicia over a field of view; means for controlling the capturing means to produce an electrical signal indicative of the indicia being read, and for processing the electrical signal to read the indicia; and means for optically modifying and asymmetrically magnifying the field of view along mutually orthogonal directions generally perpendicular to the optical axis, and for increasing resolution of the imager along one of said directions.
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15. A method of electro-optically reading indicia, comprising the steps of:
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capturing light from the indicia with a solid-state imager along an optical axis over a field of view; controlling the imager to produce an electrical signal indicative of the indicia being read, and processing the electrical signal to read the indicia; and optically modifying and asymmetrically magnifying the field of view along mutually orthogonal directions generally perpendicular to the optical axis, and increasing resolution of the imager along one of said directions. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification