Invention Application
- Patent Title: SYSTEM AND METHOD FOR EXTENDING DEPTH OF FIELD FOR 2D VISION SYSTEM CAMERAS IN THE PRESENCE OF MOVING OBJECTS
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Application No.: PCT/US2021/040722Application Date: 2021-07-07
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Publication No.: WO2022011036A1Publication Date: 2022-01-13
- Inventor: DORADO, Jose, Fernandez , LOZANO, Esther, Oteo , CAMPOS, Pablo, Garcia , NUNNINK, Laurens
- Applicant: COGNEX CORPORATION
- Applicant Address: One Vision Drive
- Assignee: COGNEX CORPORATION
- Current Assignee: COGNEX CORPORATION
- Current Assignee Address: One Vision Drive
- Agency: LOGINOV, William, A.
- Priority: US16/923,219 2020-07-08
- Main IPC: G02B27/00
- IPC: G02B27/00 ; G03B5/06 ; G06K7/10 ; H04N5/00
Abstract:
This invention provides a system and method for enhanced depth of field (DOF) advantageously used in logistics applications, scanning for features and ID codes on objects. It effectively combines a vision system, a glass lens designed for on-axis and Scheimpflug configurations, a variable lens and a mechanical system to adapt the lens to the different configurations without detaching the optics. The optics can be steerable, which allows it to adjust between variable angles so as to optimize the viewing angle to optimize DOF for the object in a Scheimpflug configuration. One, or a plurality, of images can be acquired of the object at one, or differing angle settings, with the entire region of interest clearly imaged. In another implementation, the optical path can include a steerable mirror and a folding mirror overlying the region of interest, which allows different multiple images to be acquired at different locations on the object.
Information query