High-precision three-dimensional scanning system

Abstract

The invention relates to a high-precision three-dimensional scanning system which comprises an XY moving platform and a measured object located on the XY moving platform, and a large-chromatic-aberration optical system located on a Z-axis moving platform is arranged in front of the measured object. An illumination optical fiber for introducing light of a light source and a scanning optical fiber for collecting reflected light of a measured object are arranged in front of the large-chromatic-aberration optical imaging system, the scanning optical fiber is connected with an optical fiber spectrometer, and the optical fiber spectrometer scans the reflected light of the object, judges the spectrum of the reflected light and transmits the spectrum to an image processor. The design of a large-aperture and large-chromatic-aberration lens is adopted, high-precision three-dimensional scanning of an object is achieved, the precision can reach the micron level, meanwhile, the Z-axis position is judged through movement of the lens in the Z-axis direction in cooperation with light with different chromatic aberration, the calculation complexity of an image processor is reduced, and a certain scanning speed can be guaranteed.

Description

technical field [0001] The invention relates to the field of three-dimensional scanning devices, in particular to a high-precision three-dimensional scanning system. Background technique [0002] In order to realize the three-dimensional scanning function, a system using a multi-lens imaging method has been developed in the prior art. For example, the Chinese invention patent CN206674126U discloses a distributed multi-lens photometric stereoscopic camera device, including an image processing module, a light source driving module and a device for emitting the first A first point light source for illuminating the target object with light of a wavelength; a second point light source for emitting light of a second wavelength to illuminate the target object; a third point light source for emitting light of a third wavelength to illuminate the target object; A first lens module for collecting light of the first wavelength band reflected by the target object; a second lens module f...

AI Technical Summary

Problems solved by technology

[0003] It can realize the acquisition of multiple images containing different light and dark information in one shot, and complete the three-dimensional scanning and reconstruction based on photometric stereo vision. Images illuminated by different light sources collect multiple frames of image information for 3D reconstruction, and it is difficult to perform 3D reconstruction of moving targets or targets with flexible surface changes; more importantly, due to the small numerical aperture of multiple lenses, it is difficult to interact with each other. Cooperate to achieve high-precision 3D scanning

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