Design of Industrial Standards for the Calibration of Optical Microscopes

Abstract

One of the most important fields of study in material science is surface characterization. This topic is currently a field of growing interest as many functional properties depend on the surface texture. In this paper the authors, after a short a review of different methods for surface topography characterization and the determination of the traceability problems that arise in this type of measurements, propose four different designs of material standards that can be used to calibrate the most common optical measuring instruments used for these tasks, such as measuring microscopes, metallurgical microscopes, confocal microscopes, focus variation microscopes, etc. The authors consider that the use of this type of standards (or others similar to them) could provide a step forward in assuring metrological traceability for different metrological characteristics that enables a more precise measurement of surface features with optical measuring instruments. In addition, authors expect that this work could lay the groundwork for the development of custom standards with specialized features tuned to gain a better metrological control when measuring specific geometrical surface properties.

Review of material measures for surface topography instrument calibration and performance verification

“…The material measure is an adaptation of the Siemens star used for the investigation of focus on cameras [76]. The dark and light branches of the schematic seen in figure 11 are replaced with peaks and valleys [77,78]. The process of estimating the lateral period limit is outlined in the NPL good practice guides [21] and involves two measurements along the radius of two consecutive grooves of the material measure.…”

Design and Implementation of Industrial Design and Transformation System Based on Artificial Intelligence Technology

“…Literature [18] studies the characteristics of network real-time interaction in product design and analyzes the functions and characteristics of SameData software. Literature [19] proposed to optimize the design steps of industrial products based on genetic optimization algorithm for the problem of the poor design structure of industrial products. In literature [20], aiming at the defects of traditional AI CAID (Computer Aided Industrial Design) system based on expert system, the artificial neural network model of industrial design, combinatorial optimization, and uncertain reasoning methods are theoretically analyzed and studied.…”

Laser Triangulation Sensors Performance in Scanning Different Materials and Finishes

“…On the one hand, the geometrical shape used to determine the dimensional patterns was the sphere, as inspection of this element guarantees the traceability of comparisons [ 30 ]. On the other hand, different materials and finishes were used, as traceability-related problems derived from surface topography, and which arise when calibrating optical instruments are well known [ 31 ]. Thus, once the spheres have been measured using the coordinate measuring machine (CMM) based on two parameters (diameter and form error), the necessary reference data are available to evaluate the suitability and best technological solution (optical equipment) that adapts to each sphere and, therefore, to each material/surface finish.…”