| 主权项 |
1. A high-resolution imaging and processing method of increasing the range of a geometric dimension of a part that can be determined, the method including the steps of supporting with a support a part having a width, directing from at least one radiation source at least one plane of collimated radiation in a sensing direction at a surface of the part, wherein each of the planes is occluded by the part to create unobstructed first and second planar portions of the plane of radiation passing by and not blocked by the supported part and to cast a radiation shadow of the supported part, wherein each of the first and second planar portions has a width and contains an amount of radiation which is representative of a respective geometric dimension of the supported part to be determined, and measuring by a receiver module the amount of radiation in each of the first and second planar portions imaged on first and second predetermined measuring areas, respectively, to determine the geometric dimension, the improvement comprising:
utilizing at least one optical component to increase the width and decrease the intensity of the first and second planar portions imaged on the first and second predetermined measuring areas, respectively, to obtain elongated first and second planar portions, respectively, and to produce first and second electrical signals, respectively; providing third and fourth predetermined measuring areas adjacent the first and second predetermined measuring areas, respectively, to image at least a portion of the elongated first and second planar portions, respectively, thereon and to produce third and fourth electrical signals, respectively; and processing by at least one processor the first, second, third and fourth electrical signals to determine the geometric dimension with enhanced accuracy. |
