What is a 3D scanner and how does it work?

3D scanning was invented over 20 years ago and is now actively used in various industries. It already now allows you to solve problems that seemed fantastic. Questions about what 3D scanners are, how they are arranged and on what principle they work, what types and models are produced, deserve special attention of any modern person. The information below will help you answer them.

3D scanners are devices that create exact digital copies of a specific object. Previous designs were intended for copying documents, photographs and printed matter. 3D scanners allow you to obtain three-dimensional models that exactly repeat the sample to be copied – probably the most impressive application is 3d full body scanners. They greatly facilitate the work of designers and designers.

Devices with 3D technology provide copying of objects of almost any complexity and with a large amount of detail. Such scanners are used in various areas of human activity: engineering and design, medicine, design, film industry, industrial production, restoration of cultural monuments. High resolution allows their use in medical studies of blood vessels and tissues, ECG, in neonatology and pediatrics.

3D or 3D scanning is the copying of volumetric objects. For this, an accurate measurement of all geometric parameters is provided, and their processing allows you to build a digital model (polygonal model or point cloud). Then it can be displayed on a computer screen (gadget) or on a 3D printer for material reproduction. In this case, not only the dimensions, but also the structure of the material are completely repeated.

The principle of operation and the device of the scanner
The operating principle of a 3D scanner is based on the use of 3D scanning technology. First of all, “stereo vision” is provided, that is, the determination of the coordinates of all points of the object. This opportunity is created using 2 cameras and special lighting. Cameras, catching reflected rays, measure the distance to a certain point and transmit the information to a computer. Filming is made from different angles to obtain comprehensive information. The obtained coordinates are used to build a digital model of the object in space.

The design of scanners depends on their type. The main units are: cameras for fixing reflected rays, a source of illumination (rays), a mechanism for shooting from different angles and an electronic unit for collecting and analyzing data.

The practical use of 3D scanning is already a reality today – see texel products, for instance. The principle of operation of 3D scanners is based on accurate measurement of distances to characteristic points of the object under study, which allows you to determine their coordinates in space and build a digital volumetric model. In the future, it can be displayed on a computer screen or formed on a 3D printer. Several scanning technologies and device types are available to accommodate real-world requirements. The choice of the scanner is based on the main technical and operational parameters. You should also take into account the manufacturer and the rating of models, compiled by consumer reviews.