High-resolution imaging and processing method and system for determining a geometric dimension of a part

摘要

A high-resolution imaging and processing method and system for determining a geometric dimension of a part is provided. The method includes directing at least one plane of collimated radiation at a surface of a supported part. 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. 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 part to be determined. The method includes increasing the width and decreasing the intensity of the first and second planar portions imaged on first and second predetermined measuring areas, respectively.

主权项

1. A high-resolution imaging and processing method of determining a geometric dimension of a part, 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 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 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 comprises:
utilizing at least one optical component to increase the width and decrease the intensity of the first planar portion imaged on the first predetermined measuring area to produce a first electrical signal proportional to the measurement and to increase the width and decrease the intensity of the second planar portion imaged on the second predetermined measuring area to produce a second electrical signal proportional to the measurement; and processing by at least one processor the electrical signals to determine the geometric dimension with enhanced accuracy.