SYSTEM AND METHOD FOR DETECTING OPTICAL DEFECTS
First Claim
1. An inspection system for monitoring the distribution of an additive on the inner surface of the barrel of a syringe, comprising:
- a target having a pattern of alternating light and dark areas;
a camera in optical alignment with the target;
a syringe holder for holding a syringe at a desired location between the camera and the target; and
,a light source for illuminating the target to enable the camera to capture an image of the target through the syringe.
3 Assignments
0 Petitions
Accused Products
Abstract
A system and method for detecting optical defects on a surface of a transparent or semi-transparent structure, tube or article is provided. Defects are identified and analyzed by using a digital camera to capture an image of a target having a pattern of light and dark areas through a portion of the article. The images are processed to enhance the visibility of the defects, and the distribution of the defects as function of their location on the surface of the article is determined. This determination is used as part of a statistical process control method for controlling the level of defects present on the surface of the article.
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Citations
20 Claims
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1. An inspection system for monitoring the distribution of an additive on the inner surface of the barrel of a syringe, comprising:
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a target having a pattern of alternating light and dark areas; a camera in optical alignment with the target; a syringe holder for holding a syringe at a desired location between the camera and the target; and
,a light source for illuminating the target to enable the camera to capture an image of the target through the syringe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for inspecting an article to determine if a surface of the article has an acceptable condition, comprising:
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placing the article in a fixture located between a target and a camera; acquiring an image by the camera of the target through the article; processing the image of the target to determine if any defects associated with a selected surface of the article are present; analyzing the image to determine the distribution of defects associated with selected surface of the article; and rejecting the article if the distribution of defects associated with the selected surface of the article is determined to be unacceptable. - View Dependent Claims (12, 13, 14, 19, 20)
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15. A system for determining the distribution of silicone oil on a selected surface of an article, comprising:
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a target having a pattern of alternating light and dark areas; a light source positioned behind the target; a digital camera positioned to receive light transmitted through the target from the light source; an article holder for holding an article at a desired location between the camera and the target such that light transmitted through the target from the light source passes through the article to the camera; and a memory in communication with the camera for storing images from the camera produced by the light passing through the article. - View Dependent Claims (16, 17, 18)
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Specification