Invention Grant
US07885528B2 System and method for focusing a charge coupled device lens on a selected surface of an object 有权
将电荷耦合器件透镜聚焦在物体的选定表面上的系统和方法

System and method for focusing a charge coupled device lens on a selected surface of an object
Abstract:
A positioning system and method for focusing a charge coupled device (CCD) lens on a selected surface of an object to be measured is provided. The positioning system and method moves the CCD lens downwards to approximate an estimate Z-axis coordinate of the CCD lens, and moves the CCD lens upwards to find an accurate Z-axis coordinate of the CCD lens according to the selected surface of the object. The system and method further moves the CCD lens to a position corresponding to the accurate Z-axis coordinate to focus the CCD lens on the selected surface.
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