New optical inspection system revealed at Productronica
13 March 2002Manufacturing / Production Technology, Hardware & Services
Metcal unveiled its VPI-1000 Optical Inspection System at Productronica 2001. The VPI-1000 is new, from the ground up, adding features and flexibility to traditional optical inspection while offering customers an economical inspection solution. According to the manufacturer, the VPI-1000 gets tighter, closer and lower than conventional optical systems, most of which require at least a 0,127 mm standoff height to view underneath the component.
Sleek and ergonomically designed, it offers an on-screen magnification range of 100x to 175x and can inspect under components with a standoff as low as 0,051 mm. A specially designed optical tip requires just a 1 mm distance between components to achieve optimum inspection.
Unique to the VPI-1000 is the mirrored tip/lens interface. With this design, operators can look under BGA, CSP, LGA, etc, packages in spite of low standoff heights. This capability is ideal for mobile phone production and medical devices as both markets are focused on smaller and smaller tolerances, less available board real estate and lower profiles.
Central to the VPI-1000 Optical Inspection System's capabilities is Metcal's articulating lens, which rotates 90° (left/right) for easier inspection of interior rows and features an angle swing of 5° (up/down) for closer inspection of top and bottom connections. With a slight turn of the lens adjustment ring, the operator can move through the underside of the component to check for bridging, cold solder joints, open circuits, excess flux, contamination, and other process-related failures that X-ray inspection systems cannot easily detect without highly educated and technical interpretation.
Completing the system is a 12,7 mm CCD camera, which accounts for the system's compact size and a high-resolution flat LCD monitor that frees bench space. An optional software package includes measurement and process analysis, multifocusing and image enhancement, and a specially designed visual defect diagnostic programme.
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