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US 2006/0131419 A1Published application
Low profile illumination for direct part mark readers
AssigneeCognex Technology and Investment Corporation
InventorLaurens Nunnink
Life of this patent
Estimating the term…
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.
Claims10
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 selectively actuated illuminators, the illuminator mounted within the housing;
- and
- an integrated optical transmitter mounted within the housing, the integrated optical transmitter having a dark field illuminator transmitter, the dark field illumination transmitter in optical cooperation with at least one of the plurality of selectively actuated illuminators to project dark field illumination on the object;
- and a bright field illumination transmitter, the bright field illumination transmitter in optical cooperation with at least one of the plurality of selectively actuated illuminators to project bright field illumination on the object.
3 more elements
A plastic molded optical transmitter for use in a direct part mark reader comprising:
- a structural frame;
- a dark field illumination transmitter integrated into the frame;
- and
- at least one bright field illumination transmitter integrated into the frame, and adjacent to the dark field illumination transmitter.
1 more element
A hand-held direct part mark reader comprising:
- 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
- a viewing port through the housing to permit observation of the field of view.
3 more elements
Dependencies are inferred from the claim text.