Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Method of manufacturing ball array devices using an inspection apparatus having two or more cameras and ball array devices produced according to the method Image Number 14 for United States Patent #7653237. A calibration and part inspection method for the inspection of ball grid array, BGA, devices. Two cameras image a precision pattern mask with dot patterns deposited on a transparent reticle. The precision pattern mask is used for calibration of the system. A light source and overhead light reflective diffuser provide illumination. A first camera images the reticle precision pattern mask from directly below. An additional mirror or prism located below the bottom plane of the reticle reflects the reticle pattern mask from a side view, through prisms or reflective surfaces, into a second camera and a second additional mirror or prism located below the bottom plane of the reticle reflects the opposite side view of the reticle pattern mask through prisms or mirrors into a second camera. By imaging more than one dot pattern the missing state values of the system can be resolved using a trigonometric solution. The reticle with the pattern mask is removed after calibration and the BGA to be inspected is placed with the balls facing downward, in such a manner as to be imaged by the two cameras. The scene of the part can thus be triangulated and the dimensions of the BGA are determined.       Recently Added Patents Multimodal imaging of atherosclerotic plaque targeted to LOX-1 Server change management Gun with fastening for safety cord Multi-frame prediction for hybrid neural network/hidden Markov models Thermal battery cathode materials and batteries including same Lighting assemblies and components for lighting assemblies Directed acyclic graph discovery and network prefix information distribution relative to a clusterhead in an ad hoc mobile network   Randomly Featured Patents Dual power motorized roller Containers, sleeves and lids therefor, assemblies thereof, and holding structure therefor Magneto-optical recording medium simplifying transfer of magnetic domain Aircraft radar arrangement Steering gear Device for pin adjusting in sensors Rocker arm mechanism for clamping an adjustable steering column Compact balloon inflater and loader apparatus and method Antibacterial 4,6-substituted 6', 6'' and 1 modified aminoglycoside analogs Data receiving device © 2006-2008 PatentGenius. All Rights Reserved.