7 November 2016 Design of a solar-blind ultraviolet zoom lens in corona detection
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Proceedings Volume 10141, Selected Papers of the Chinese Society for Optical Engineering Conferences held July 2016; 101411Q (2016) https://doi.org/10.1117/12.2256448
Event: Selected Proceedings of the Chinese Society for Optical Engineering Conferences held July 2016, 2016, Changchun, China
Abstract
Based on the requirements of corona detection on searching targets with large field of view and detecting objects with small field of view, a refractive zoom optical system using mechanical compensation technology, which operates at 0.24μm~0.28μm wavelength ,is designed with aspherical surfaces. S8844-0909 ultraviolet CCD is selected as a sensor with pixel size 24μm×24μm. The zooming region is 35mm~70mm with F number of 3.5 and the corresponding field of view of 7°~14°.The zoom lens consists of seven lenses with two aspherical surfaces, so it has the advantages of compact size and simple structure. The results show that in full zooming range, the MTF values over all fields of view are above 0.8 at cut-off frequency 21lp/mm. The distortion is less than 5%.The zoom lens system has good image quality and stable image plane, which meets the overall design requirements of the optical system. Keywords: Corona detection, Zoom lens, Aspheric surface
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Sirui Kang, Wenwen Fan, Yu Chen, "Design of a solar-blind ultraviolet zoom lens in corona detection", Proc. SPIE 10141, Selected Papers of the Chinese Society for Optical Engineering Conferences held July 2016, 101411Q (7 November 2016); doi: 10.1117/12.2256448; https://doi.org/10.1117/12.2256448
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