1、 Working principle
The blue light 3D scanner utilizes blue light projection heterodyne multi frequency phase shift technology for 3D scanning measurement. Specifically, it first projects blue light grating fringes onto the object being measured through a light source, and these fringes are modulated by the surface morphology of the object to form measurement fringes containing surface information of the object. Then, two high-precision CCD cameras (or similar image sensors) synchronously capture images of these measurement fringes from different angles. Next, the captured image is decoded and phase calculated, and the epipolar constraint criterion and stereo vision technology are used to finally calculate the three-dimensional coordinates of each point on the surface of the object, thereby generating a three-dimensional data model of the object.
2、 Advantages
High precision: Blue light 3D scanning technology can achieve high-precision 3D measurement, usually reaching micrometer level accuracy, suitable for applications with high precision requirements.
Non contact measurement: This technology adopts a non-contact measurement method, avoiding the errors and damages that may be caused by traditional contact measurement, and is suitable for objects with high surface quality requirements.
Fast measurement speed: Blue light 3D scanners can quickly capture the three-dimensional information of objects, greatly reducing measurement time and improving work efficiency.
Strong adaptability: This technology can be applied to objects of various shapes and materials, including complex surfaces and irregularly shaped objects, with a wide range of applicability.
Rich data: Blue light 3D scanning technology can generate a complete 3D data model containing information such as object surface morphology and size, providing rich data support for subsequent analysis, processing, and manufacturing.
3、 Disadvantages
High equipment cost: Blue light 3D scanners are usually expensive, which may pose certain economic pressure for small and medium-sized enterprises or individual users.
There are certain requirements for the operating environment: although blue light 3D scanning technology has a certain resistance to interference from ambient light, it may still affect measurement accuracy and stability in extremely complex or harsh environments.
Complex data processing: Blue light 3D scanning technology generates a large amount of data, requiring complex post-processing and analysis to obtain the final 3D model. This may require professional software and skill support.
Local accessibility issues: In some cases, such as when the object being measured has areas that are difficult to reach such as deep holes or depressions, blue light 3D scanning technology may not be able to fully cover these areas, resulting in the integrity of the measurement results being affected.
In summary, blue light mechanical 3D scanning technology has been widely used in the industrial field due to its high precision, non-contact measurement, and fast measurement speed. However, its high equipment cost, certain requirements for the operating environment, and complex data processing also need to be taken into account when using it. When choosing blue light 3D scanning technology, it is necessary to consider the specific application requirements and scenarios comprehensively.