The paper gives a detailed description of the program VietGOS for automatized synthesis of two-lens and three-lens lenses based on the theory of third-order aberrations. With its help, the synthesis of high-aperture objectives in the visible and infrared spectrum regions and 4-color superachromate was carried out. This program helps an optical engineer to significantly simplify and speed up the synthesis process of two-lens and three-lens objectives with the required characteristics.
The paper presents an algorithm for automatic synthesis of two-lens and three-lens objectives based on: the third-order aberration theory, selection of lens materials and ranking criteria of calculated systems. An original ranking system of calculated objectives is proposed by criterion of the axial point image quality and by criterion of the sensitivity to manufacturing errors of design parameters. Based on the developed algorithm, a program for automatic synthesis and ranking of two-lens and three-lens objectives was developed. The program helps an optical engineer to significantly simplify and accelerate the synthesis process of two-lens and three-lens objectives with the required image quality characteristics.
The paper describes a way of simple optical systems design. The presented computer tool synthesizes "photographic objective" type systems according to given aberration parameters. It is directly applicable to micro objectives, which are photographic systems in a backward ray trace. The paper compares lenses with f’=50 mm, NA=0,1, 2y=6 mm designed as cemented doublet plus single lens and as pair of cemented doublets. Despite the second lens is a more complex system, its image quality is no better than provided by simplified system.
The paper discusses the main stages of creating and implementing a model of a universal, inexpensive measuring system based on the principles of stereo vision. Particularly special attention had been paid to the development, analysis, study of the features and accuracy of measurements of a passive stereo vision system, as a measuring device. In the course of the presented work, the following procedures were performed: calibration of a separate camera, calibration of a stereo camera, straightening and comparison of stereo images. The software part of the work was done in the C ++ programming language in the QtCreator editor using the computer vision library OpenCV 3.2.
The implementation of modeling and research for image comparison methods is necessary for subsequent quality assessment of structures reconstructed with Fresnel hologram projectors, it will allow to select the optimal parameters of the optical circuit and the level of binarization of the hologram. The purpose of the paper is to research the comparison methods for planar images reconstructed with Fresnel hologram projectors with the original object. In this work, the methods of pixel-by-pixel comparison of images and methods of comparing images by histogram are considered. As a numerical criterion for the methods of pixel-by-pixel comparison, the RMS value was chosen. The smaller the RMS value, the more the restored image is similar to the original object. When considering the comparison of methods for image histograms were reviewed by comparing the histograms: correlation method, chi-square method, intersection method, the Bhattacharya distance method. For work, two experiments were performed, during which the most optimal binarization threshold was determined for planar images reconstructed with Fresnel hologram projectors, by comparing them with the original object. In the future, it is planned to implement a correlation comparison of images and compare images in the presence of defects: blur and possible artifacts of different nature.
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