3D Scanner: What it is used for and how it works

The 3D Scanner is revolutionising the world of design, manufacturing, and measurement technologies, offering innovative ways to capture details of natural objects and transform them into digital models. With various applications ranging from 3D modelling and 3D printing to reverse engineering, understanding how these technologies work and how to use them best is essential for professionals and enthusiasts. How does a 3D scanner work, and what are its basic principles?

Laser vs Structured Light: the technologies behind 3D scanning

The two main 3D scanning methods, laser and structured light, offer unique advantages. Laser technology, known for its high precision, uses laser triangulation to measure distances accurately, making it ideal for applications requiring fine details and exact measurements. On the other hand, structured light 3D scanning uses light patterns projected onto the object and captures the deformations of these patterns to create the 3D model. This method is particularly effective for scanning large objects or those with complex geometries, offering high-quality results and superior scanning speed.

From data to 3D model: the transformation process

After capturing 3D data through the Scanner, scanning software plays a crucial role in transforming this raw data into a usable 3D model. Thanks to advanced algorithms, the software processes the information, filling gaps, eliminating defects, and optimising the model for subsequent applications such as 3D modelling or 3D printing. This process highlights the importance of choosing compatible, easy-to-use software to obtain high-quality 3D models.

Scanning algorithms and software: how data is processed.

Advanced scanning software algorithms are fundamental in processing 3D data, transforming raw scans into precise digital models. These algorithms, along with the software’s computing power, analyse, correct, and refine the data, allowing for 3D models ready to be used in a variety of applications. The choice of a 3D scanner is closely linked to the software quality, emphasising the importance of opting for solutions that offer the best compatibility and functionality.

Types of 3D scanners: desktop vs professional portable

Desktop 3D scanners: suitable for detailed modelling of small objects

Desktop 3D scanners are designed for high-precision scanning of small objects, making them ideal for hobbyists, designers, and scholars who need to capture minute details for 3D modelling projects. Easy to use and often more affordable, these scanners are perfect for tabletop applications with limited space and resources. Solutions like 3DMakerPro and Artec 3D offer excellent performance for capturing 3D data in controlled environments.

Portable 3D scanners: versatility and mobility for professionals

For those who require greater flexibility, portable 3D scanners such as those offered by Revopoint, Creality, and other brands allow for scanning objects of various sizes and under different lighting conditions. These portable solutions benefit professionals in the field, enabling 3D scanning when desktop scanners are impractical. Their ability to adapt to various situations makes them indispensable tools for engineers, architects, and reverse engineering professionals.

Comparison between structured light and laser 3D scanners: which to choose?

The choice between structured light and laser 3D scanners depends on various factors, including the type of objects to be scanned, the desired quality, and the context of use. Laser scanners are often preferred for their precision and detail, making them ideal for metrology and quality control applications. Conversely, structured light scanners offer greater speed and flexibility, which makes them suitable for scanning large objects or those with complex surfaces. Carefully consider your needs to determine which 3D scanning technology is best for you.

What are the most common applications of 3D scanners?

Reverse engineering: from real object to digital model

Reverse engineering is one of the most common and advantageous applications of 3D scanners. It allows professionals to understand and replicate parts and components by creating faithful 3D models of the original. This technique is beneficial in sectors such as automotive, aerospace, and manufacturing, where existing components must be analysed for improvements or the creation of compatible replacement parts.

Quality control in metrology: precision and scanning speed

In metrology, the 3D Scanner plays a crucial role in quality control, offering precise and reliable measurement of components at various stages of production. The ability to perform rapid and high-precision scans reduces downtime and improves production process efficiency, ensuring that each part meets the required quality standards.

3D printing and modelling: optimising design before production

The 3D Scanner is a valuable ally in preparing models for 3D printing, allowing users to optimise designs before production. Whether modifying an existing model or creating a new design from scratch, 3D scanning provides an accurate and detailed basis for modelling, ensuring high-level results and reducing prototyping times.