Structured Light Scanner Triangulation

In this article we explore the two main technologies used for 3d scanning for 3d printing in other words laser triangulation and structured light.

Structured light scanner triangulation.

For sub micron applications led structured light sensors are preferred since laser triangulation sensors produce laser speckle that prevents scanning at the sub micron level. 3d scanning can be based on different technologies each with their own benefits limitations. Structured light 3d scanning. The target object is stationary.

At present laser triangulation scanners structured light and contact scanning are the predominant technologies employed for industrial purposes with contact scanning remaining the slowest but overall most accurate option. I ll walk you through setting up your projector and camera and capturing images that can be decoded into a 3d point cloud using a processing application. Sensor set up considerations. Nevertheless 3d scanning technology offers distinct advantages compared to traditional touch probe measurements.

Projecting a narrow band of light onto a three dimensionally shaped surface produces a line of illumination that appears distorted from other perspectives than that of the. By emitting a beam of light on any single point of an object and taking three measurements of the point including distance and angle the exact position of the point space can be determined. The concept of triangulation. A structured light 3d scanner is a 3d scanning device for measuring the three dimensional shape of an object using projected light patterns and a camera system.

So how do laser scanners compare to structured light scanners.