Test and alignment system for electronic display devices and test fixture for same

A test and alignment system for an electronic display device comprising:

• a test pattern generator to be connected to an electronic display device for causing said electronic display device to generate images of video test patterns on said electronic display device;
• a test fixture including a frame supporting a plurality of close-up optical sensors to sense and produce image signals corresponding to small areas of images displayed on said electronic display device and a plurality of wide-angle optical sensors to sense and produce image signals corresponding to larger areas of images displayed on said electronic display device, said close-up optical sensors being positioned on said frame so as to be outside of the fields of view of said wide-angle optical sensors, at least some of said close-up optical sensors being moveable relative to said frame, said wide-angle optical sensors being calibrated using a calibration grid so as to have overlapping fields of view to sense and produce image signals corresponding to substantially the entire image displayed on said electronic display device;
• a computer controlling said test pattern generator and processing said image signals to perform a series of tests on said electronic display device;
• and
• a display to provide a visual indication of the results of said series of tests.

A test fixture for a test and alignment system for an electronic display device comprising:

• a frame;
• at least one optical sensor mounted on said frame to sense and produce image signals corresponding to an image displayed on an electronic display device positioned adjacent said test fixture;
• and
• at least one wobulator mounted on said frame and including at least one pair of laterally spaced electromagnets, said electromagnets being energizable to generate a generally uniform alternating magnetic field generally encompassing the entire display screen of said electronic display device to bend electron beams within said electronic display device, said electromagnets being fixed to said frame outside of the field of view of said at least one optical sensor.

A test fixture for a test and alignment system for an electronic display device comprising:

• a frame;
• a plurality of close-up cameras mounted on said frame to sense and produce image signals corresponding to small areas of an image displayed on an electronic display device positioned adjacent said test fixture;
• and
• a plurality of wide-angle cameras mounted on said frame behind said close-up cameras and being calibrated using a calibration grid so as to have overlapping fields of view, said wide-angle cameras sensing and producing image signals corresponding to substantially the entire image displayed on said electronic display device, said close-up cameras being positioned on said frame in front of said wide-angle cameras outside of the fields of view of said wide-angle cameras.