Low profile illumination for direct part mark readers
First Claim
Patent Images
1. An industrial identification mark reader comprising:
- a housing;
an imaging module positioned within the housing to capture an image of a mark on an object placed before the reader;
an illuminator module comprising a plurality of illuminators mounted within the housing wherein subsets of the illuminators are separately actuatable; and
an integrated optical transmitter mounted within the housing, the integrated optical transmitter having separate dark and bright field illuminator transmitters, the dark and bright field illumination transmitters simultaneously optically aligned with at least first and second different ones of the plurality of illuminators, the dark field illumination transmitter changing the direction of light from the first illuminator to thereby project dark field illumination at the object, the bright field illumination transmitter projecting bright field illumination at the object when the second illuminator is actuated.
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Accused Products
Abstract
An industrial reader is provided with an image formation system that is particularly adapted to read bar codes and two-dimensional symbols marked directly on objects. The image formation system includes illumination sources and illumination transmissive components that produce a combination of bright field and dark field illumination.
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Citations
23 Claims
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1. An industrial identification mark reader comprising:
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a housing; an imaging module positioned within the housing to capture an image of a mark on an object placed before the reader; an illuminator module comprising a plurality of illuminators mounted within the housing wherein subsets of the illuminators are separately actuatable; and an integrated optical transmitter mounted within the housing, the integrated optical transmitter having separate dark and bright field illuminator transmitters, the dark and bright field illumination transmitters simultaneously optically aligned with at least first and second different ones of the plurality of illuminators, the dark field illumination transmitter changing the direction of light from the first illuminator to thereby project dark field illumination at the object, the bright field illumination transmitter projecting bright field illumination at the object when the second illuminator is actuated. - View Dependent Claims (2, 3, 4, 11, 18, 19, 20, 22)
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5. A plastic molded optical transmitter for use in a direct part mark reader that includes first and second different pluralities of illuminators, the transmitter comprising:
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an integrated optical transmitter including; at least one dark field illumination transmitter that changes the direction of light entering the dark field illumination transmitter to project light at an object; and at least one bright field illumination transmitter adjacent to and separate from the dark field illumination transmitter that projects light at the object; wherein, the dark and bright field illumination transmitters are juxtaposed with respect to each other so that when the dark field illumination transmitters are optically aligned with the first plurality of illuminators, the bright field illumination transmitters are optically aligned with the second plurality of illuminators and the dark field illuminators are optically misaligned with the bright field illuminators. - View Dependent Claims (6, 7, 8, 9, 12, 23)
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10. A hand-held direct part mark reader comprising:
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a housing; an imaging module having a field of view, the imaging module mounted within the housing for capturing an image of a mark on an object place in the field of view; an illuminator module comprising a plurality of selectively actuated illuminators, the illuminator module mounted within the housing; a dark field illumination transmitter, in optical cooperation with at least one of the plurality of selectively actuated illuminators in the illuminator module to project dark field illumination on the object, the dark field transmitter mounted within the housing and circumferentially surrounding a window through which reflected light from the field of view passes to the imaging module; and a viewing port through the housing to permit direct observation of the field of view through the window. - View Dependent Claims (13, 14, 15, 16, 17, 21)
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Specification