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KPI Science News
ISSN 2617-5509 · e‑ISSN 2663-7472 Open Access · CC BY 4.0
Vol. 135 · Issue 1-2 · 2022 Jun 1, 2020 article

Automated design of zoom riflescope with extended parameters

ВС
Вячеслав Сокуренко Corresponding Національний технічний університет України «Київський політехнічний інститут імені Ігоря Сікорського», приладобудівний факультет, кафедра комп’ютерно-інтегрованих оптичних та навігаційних систем, Ukraine Ukraine
ОС
Олег Сокуренко ВСП «Оптико-механічний фаховий коледж Київського національного університету імені Тараса Шевченка», Ukraine Ukraine
PublishedJun 1, 2020
PDF (Ukrainian)
KPISN 1-2 VOL 135 · 1-2
VOL 135 · ISS 1-2 · 2022 View issue

Abstract

Background. Designing an arbitrary afocal zoom optical system is a complex and multidimensional problem. It cannot be solved analytically and requires the essential experience and efforts of the designer. Objective. The purpose of the paper is to present and verify by simulation the method and means to perform an automated design of complex multi-lens afocal zoom optical systems having variable parameters and characteristics. Methods. Using the developed specialized software with implemented modification of the adaptive Cauchy differential evolution algorithm for the parametric synthesis of multi-component optical systems of zoom riflescopes with extended functional parameters. Results. The developed optical system of the riflescope provides the 5× magnification ratio and the angular field of view in the object space from 3.26° to 0.83°. It has a reticle located in the first focal plane, the entrance pupil diameter of 60 mm, the eye relief within the range of 106...111 mm, and the maximum system length of 390 mm. The riflescope contains 13 lenses in 10 components. The performed simulations showed that the time interval required for the direct automated design of the riflescope’s optical system is about 30–40 hours for the total number of unknown parameters (variables) equal to 91. The root-mean-square values of the angular aberrations of axial beams in all (five) configurations of the synthesized zoom system do not exceed 1.25 arc minute in the whole spectral range. The algorithm helps to determine the prescription data of optical systems, considering the technical requirements and restrictions specified by the designer. Conclusions. Computer simulations of the development of the zoom riflescope with the magnification of 5-25×, the entrance pupil diameter of 60 mm, and the reticle located in the first focal plane have confirmed the effectiveness of the proposed algorithm to design automatically complex multi-lens optical systems with variable parameters. The obtained results proved the high image quality of the generated 13-lens riflescope with the long eye relief. The implemented modification of the adaptive Cauchy differential evolution method can be considered a powerful tool that helps to automate the parametric synthesis of multicomponent optical systems of zoom riflescopes, taking into account the requirements set by the designer. Future research should test the feasibility of the automated design of other riflescopes containing more lenses and providing extreme performances.

Keywords

#automated optical design #zoom riflescope #optical system #parametric synthesis #global optimization #aberration

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