laserfelületmérés

Laserfelületmérés, often translated as laser surface measurement, refers to a group of techniques that utilize laser light to ascertain the physical characteristics of a surface. These methods are employed across various industries for quality control, reverse engineering, and research and development. The fundamental principle involves projecting a laser beam onto the object's surface and analyzing the reflected or scattered light.

One common technique is triangulation, where a laser line or point is projected onto the surface. A camera, positioned at a known angle to the laser, captures an image of the illuminated line or point. By calculating the shift in the perceived position of the laser feature in the image, the depth of the surface at that point can be determined. This process is repeated across the surface to build a 3D model.

Another approach is confocal microscopy, which uses a laser to scan the surface point by point. A pinhole aperture in front of the detector only allows light from the focal plane to pass through, effectively rejecting out-of-focus light. This results in high-resolution, in-focus images, ideal for measuring microscopic surface features and textures.

Interferometry is another advanced laser surface measurement technique. It works by splitting a laser beam into two paths: one that reflects off the surface and another that acts as a reference. When these beams recombine, they create an interference pattern that is sensitive to even nanometer-scale variations in the surface height. The analysis of this pattern allows for extremely precise surface characterization.

These laser-based methods offer non-contact measurement capabilities, reducing the risk of surface damage and allowing for the inspection of delicate or difficult-to-access objects. Their speed, accuracy, and versatility have made them indispensable tools in modern manufacturing and scientific investigation.