摘要:
An automatic inspection method contactlessly measures the offset of a feature of an object from a theoretical ideal center of the object, and is particularly suited for measuring at an endface of an optical fiber termination the eccentricity of an optical fiber core relative to a theoretical ideal center of the termination. The core is extremely smaller (typically between about 50 and 500 times) in size than the termination boundary. An inspection system for implementing the novel inspection method has a feature imager, one or more boundary segment imagers but preferably four in number, and a machine vision system connected to the foregoing imagers. The feature imager is positioned to capture an image of the feature (e.g., fiber core endface), and the one or more boundary segment imagers are positioned to capture an image of a corresponding boundary segment of the object (e.g., termination endface). The machine vision system determines the offset, or eccentricity, based upon the feature image and the one or more boundary segment images.
摘要:
A balanced focus system and method achieve optimal focus of different areas of an object that are concurrently imaged and then combined to form a combined image. The balanced focus method is particularly suited for, but not limited to, use with an automatic inspection system for contactlessly measuring at an endface of an optical fiber termination the eccentricity of an optical fiber core relative to a theoretical ideal center of an alignment surface of the termination. The inspection system has an imaging system with a feature imager and one or more boundary segment imagers but preferably four in number, a focus adjustment mechanism (FAM) for adjusting the position of the imagers relative to the imaged object along an optical axis, and a machine vision system for receiving image data from the foregoing imagers and configured to control the FAM. The feature imager is positioned to capture an image of the feature (e.g., fiber core endface), and the one or more boundary segment imagers are positioned to capture an image of a corresponding boundary segment of the object (e.g., termination endface). The machine vision system determines the eccentricity based upon the feature image and the one or more boundary segment images. Significantly, the machine vision system employs the balanced focus system and method to achieve an optimal focus position for the imaging system based upon a series of combined images and a statistic S that is computed for each of the sampling locations.
摘要:
A zone analysis system and method (211) optimize speed and minimize adverse effects resulting from noise in an inspection system (90) for measuring disparity between two surfaces. In particular, the zone analysis system and method (211) can be implemented in an inspection system (90) for contactlessly measuring undercut or protrusion of an optical fiber (26) relative to a surrounding support material (36) at the endface (79) of an optical fiber termination (37). In structure, the inspection system (90) has a measurement apparatus (91) with an interferometer (98) controlled by a machine vision system (92) for determining the degree of disparity. The inspection system (90) measures an offset of an interferometric fringe (113') produced by the interferometer (98) over the target (82) in the image in order to determine the disparity. Further, the machine vision system (92) employs the zone analysis system and method (211) for optimizing the performance thereof.
摘要:
A system and method analyze raw data derived from a manufacturing control facility, the manufacturing control facility for manufacturing at least one device by execution of a sequence of assembly operations. A preprocessor is used to receive the raw data from the manufacturing control facility and to configure the raw data into a predetermined database format. The raw data after being configured by the preprocessor is stored into a database. A server transmits queries and results between the database and at least one user terminal. The results transmitted by the server are displayed on at least one graphical user interface at the user terminal, the results being indicative of at least one performance parameter of the assembly operations.
摘要:
Control of an interconnection process for optical fibers involves evaluating the status of all modules used in the process and moving an optical fiber through the process in accordance with the status of the modules. Such control allows more than one fiber, and more than one fiber type, to be processed simultaneously. The processing may be optimized using fuzzy logic to track when operations performed by a module are near completion. A graphical user interface displaying the movement of the optical fibers through the process may also be provided.
摘要:
An optical assembly workstation includes a principal work surface and a movable work surface arranged above the principal work surface, with the elevated work surface being movable back and forth in at least one axial direction relative to the principal work surface. A frame assembly provides both support and a mechanism for moving the elevated work surface relative to the principal work surface. The movable work surface is either configured to receive an optical work piece, or is itself the optical work piece. The arrangement of a movable work surface over the principal work surface provides flexibility in optical test and optical assembly equipment placement, frees the principal work surface area of clutter, and reduces the probability of inadvertent damage to the optical fibers and optical assemblies being manufactured or tested at the optical assembly workstation.
摘要:
An alignment and lighting system aligns and lights an optical fiber termination so that an inspection system can measure the eccentricity of an optical fiber core relative to the termination. The inspection system has an imaging system comprising a feature imager and one or more boundary segment imagers but preferably four in number, a machine vision system connected to the imaging system, and an alignment and lighting system for aligning the termination with the imaging system and lighting the termination without having to launch light therethrough. The feature imager is positioned to capture an image of the fiber core endface, and the one or more boundary segment imagers are positioned to capture an image of a corresponding boundary segment of the termination endface. The machine vision system determines the offset, or eccentricity, based upon the feature image and the one or more boundary segment images. The alignment and lighting system includes an alignment apparatus and a unique lighting scheme. The alignment apparatus has a plurality of alignment arms that are spaced apart via spacings to form a cross-shaped aperture that is engaged with the termination endface. Light is projected toward the exposed regions at a light projection angle that is outside the light acceptance angle associated with the fiber core. As a result, light is not generally received by the core, and light is scattered within and reflects out from the fiber cladding and the termination support material surrounding the cladding.
摘要:
A self-calibration system and method (125) determines the adequacy of an interferometer angle .phi. and surface curvatures in an inspection system (90). The inspection system (90) can contactlessly measure the disparity between two surfaces, such as the undercut or protrusion of an optical fiber (26) relative to a surrounding support material (36) at the endface (79) of an optical fiber termination (37). The inspection system (90) measures an offset of the fringe (113') in the image over the target (25') in the image (111a, 111b, 111c) in order to determine the disparity. In structure, the inspection system (90) has a measurement apparatus (91) with an interferometer (98) situated at the angle .phi. relative to the target (82) controlled by a machine vision system (92) for determining the degree of disparity. Further, the machine vision system (92) preferably employs the self-calibration system and method (125).
摘要:
A two-phase autofocusing system (123,124) automatically and precisely positions an interferometric fringe (113') over a target (25') in an image (111a, 111b, 111c). The autofocusing system (123, 124) can be implemented in an automatic inspection system (90) for contactlessly measuring disparity between two surfaces, such as undercut or protrusion of an optical fiber (26) relative to a surrounding support material (36) at the endface (79) of an optical fiber termination (37). The inspection system (90) measures an offset of the fringe (113') at the target (25') in the image in order to determine the disparity. In structure, the inspection system (90) has a measurement apparatus (91) with an interferometer (98) controlled by a machine vision system (92) for determining the degree of disparity. Further, the machine vision system (92) employs the two-phase autofocusing system (123, 124).
摘要:
A band matching system and method (213a) enables accurate determination of a disparity between two surfaces using an interferometer. The band matching system and method (213a) can be implemented in an automatic inspection system (90) for contactlessly measuring undercut or protrusion of an optical fiber (26) relative to a surrounding support material (36) at the endface (79) of an optical fiber termination (37). The inspection system (90) measures an offset of the fringe (113') at the target (82) in the image in order to determine the disparity. In structure, the inspection system (90) has a measurement apparatus (91) with an interferometer (98) controlled by a machine vision system (92) for determining the degree of disparity. Further, the machine vision system (92) employs the band matching system and method (213a) for enhancing the performance of the inspection system (90) and the ultimate calculation of the disparity.