Single camera omni-directional vision sensor for package test
A visual sensor and single-camera technology, which is applied in the direction of optical testing for flaws/defects, can solve the problems of automatic detection difficulties, increase the complexity of system control, and increase the cost of detection systems, so as to reduce detection costs, uniform brightness, and reduce complexity Effect
Inactive Publication Date: 2011-01-19
厦门威芯泰科技有限公司
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Problems solved by technology
On the one hand, traditional vision sensors use binocular stereo for matching, which not only increases the cost of the detection system, but also increases the complexity of system control; The image of the inner wall of the tank is difficult for automatic detection due to the influence of uneven illumination brightness
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[0019] see figure 1 , the camera 1 is located above the concave lens 2, the half-mirror 5 is located between the camera 1 and the concave lens 2, the half-mirror 5 forms an angle of 45 degrees with the optical axis of the camera 1, and the center of the top lighting source 6 is in line with the semi-transparent The center of the half mirror 5 is on the same horizontal line, and the inner wall or top of the packaging jar A is illuminated coaxially. Concave lens 2 is installed on the top of inner four-sided reflector 3, and the central optical axis of camera 1 coincides with the symmetry axis of inner four-sided reflector 3; Outer four-sided reflector 4 is installed on the periphery of inner four-sided reflector 3, and the outer four-sided reflector The center of the mirror surface of 4 is opposite to the center of every mirror of the inner four-sided reflector 3, and the symmetry axes of these two groups of four-sided reflectors (i.e. the inner four-sided reflector 3 and the ou...
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The invention discloses a single camera omni-directional vision sensor for package test, relates to a vision detection sensor, and provides a single camera omni-directional vision sensor for package test capable of measuring defects of the outer wall and the inner wall or the top of a packaging tin at the same time, greatly reducing the complexity of an on-line detection system of the packaging tin, reducing detection cost and improving detection efficiency. The single camera omni-directional vision sensor for the package test is provided with an inside four-side reflector, an outside four-side reflector, a concave lens, a pickup camera, a transflective mirror, a top lighting source and an outside lighting source. The outside four-side reflector is arranged at the periphery of the inside four-side reflector; the concave lens is arranged on the top of the inside four-side reflector; the pickup camera is arranged above the concave lens; a centre optical axis of the pickup camera, a centre line of the inside four-side reflector and a primary optical axis of the concave lens coincide; the transflective mirror is positioned between the pickup camera and the concave lens and forms an angle of 45 degrees with the centre optical axis of the pickup camera; the top lighting source is arranged on the side of the transflective mirror; and the outside lighting source is provided with at least three lighting sources.
Description
technical field [0001] The invention relates to a visual detection sensor characterized by an optical method, in particular to a single-camera omnidirectional visual sensor for package detection. Background technique [0002] Due to the advantages of low cost and ease of use, vision sensors are widely used in industrial fields such as inspection, metrology, measurement, orientation, defect detection and sorting. On the one hand, traditional vision sensors use binocular stereo for matching, which not only increases the cost of the detection system, but also increases the complexity of system control; The image of the inner wall of the tank is difficult for automatic detection due to the influence of uneven illumination brightness. [0003] The Chinese invention patent application with the publication number CN1987345A discloses a monocular stereo vision sensor, which is an optical imaging system composed of a four-cone prism and a set of reflectors, a four-cone formed by a c...
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Inventor 王磊邓小艳贺珊胡天林黄元庆
Owner 厦门威芯泰科技有限公司