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White Light Scanning
White light scanning is a 3D digitizing technology that measures the physical characteristics of an object with an
optical measuring system.
Also referred to as white light digitizing by many, 3D white light scanning
is the most accurate process for taking the dimensional measurements of an object and then
modeling in 3D digitally. Other benefits include minimal setup and that it is a form of
non-contact scanning.
The process of 3D white light digitizing is very complicated. There are many measurements that white light scanners can analyze to create a model such as fringe contrast, frequency domain analysis, and fourier analysis.
White light scanning uses imaging interferometers to measure optical path difference. First, the scanner sends multiple lights towards an object. As multiple scanner lights hit the object, "interference" occurs between the lights. The difference between the lights is measured and the scanner is able to formulate digital coordinates of the object The
white light scanner compares millions of points on an object, so it is a very precise representation. . The data is stored and acts as a
3D model which can be utilized in CAD software.
The science behind using white light scanning for 3D modeling is actually not a new technology at all. With the recent advances in computer technology,
white light scanning has shifted from being viewed as outdated technology to one of the most accurate and preferred methods of
3D digitizing. Now companies like Steinbichler are producing some of the most accurate
white light digitizing equipment ever.
White light scanning is beneficial to many industries. In production and engineering,
white light digitizing is utilized for accuracy in producing engine blades, part molds, and sheet metal cuts. Using fourier analysis,
white light scanning can produce detailed topographic and surface maps.
White light scanning is an extremely accurate 3D modeling technology that has been improved on with the advances in computing power. How can
white light scanning help your project?
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