The principle of a laser triangulation auto-focus system can simply be described as an optical system shown in Figure. 3. The laser beam is focused on the sample surface and reflected back, converging to a point on the CCD detector because of the focusing lens as is shown in the figure with a solid vertical line.
Apr 30, 2019 · Here, a distance-measuring approach based on the laser triangulation principle is proposed with a corresponding mathematical model to overcome ...
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Compared with the traditional method of microscope focus correction, the proposed distance-measuring approach based on the laser triangulation principle has ...
This method has been applied to circuit board component defect detection in our laboratory. INDEX TERMS Optical images, Laser triangulation, Auto-focus, ...
May 2, 2019 · An auto-focus system based on the moiré effect and the P control method is presented. First, a collimated laser beam passes through a focusing ...
Innovative Image Processing Method to Improve Autofocusing Accuracy
www.ncbi.nlm.nih.gov › PMC9269835
Jul 5, 2022 · Accordingly, this study has developed a novel algorithm that can quickly calculate the ideal center of the elliptical spot and effectively ...
Here, a distance-measuring approach based on the laser triangulation principle is proposed with a corresponding mathematical model to overcome these problems ...
Apr 9, 2020 · Autofocusing is achieved by image processing using transmission images of photopolymerized voxels.
This study proposes a modified optical design to improve the issue of autofocus accuracy in existing optical systems. The proposed system uses lens offset ...
A novel technique is described that improves the traditional laser triangulation method by using multiple parallel laser beams that can solve the ...