Active athermalization of dual-infrared zoom lenses
For medium- and long-wavelength dual-band infrared refractive and refractive-diffractive thermal imaging zoom lenses of simple design, we show that it is possible to maintain superb and practically unchanged optical characteristics across the temperature range from –40 to +40°C in the entire range o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Samara National Research University
2020-12-01
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| Series: | Компьютерная оптика |
| Subjects: | |
| Online Access: | http://www.computeroptics.smr.ru/eng/KO/Annot/KO44-6/440610e.html |
| _version_ | 1818969167797157888 |
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| author | G.I. Greisukh I.A. Levin S.V. Kazin |
| author_facet | G.I. Greisukh I.A. Levin S.V. Kazin |
| author_sort | G.I. Greisukh |
| collection | DOAJ |
| description | For medium- and long-wavelength dual-band infrared refractive and refractive-diffractive thermal imaging zoom lenses of simple design, we show that it is possible to maintain superb and practically unchanged optical characteristics across the temperature range from –40 to +40°C in the entire range of focal length variation. Athermalization for any focal length is achieved by moving one double-lens component or a single lens along the optical axis of the lens. Considering that these optical components are not involved in the zooming process, it becomes possible to both compensate for thermal defocusing and focus the lens on the object of interest using the same focusing mechanism, while maintaining the size and tightness of the optical system. |
| first_indexed | 2024-12-20T14:16:17Z |
| format | Article |
| id | doaj.art-3643d45f2cbc4364aa74d6186c070d29 |
| institution | Directory Open Access Journal |
| issn | 0134-2452 2412-6179 |
| language | English |
| last_indexed | 2024-12-20T14:16:17Z |
| publishDate | 2020-12-01 |
| publisher | Samara National Research University |
| record_format | Article |
| series | Компьютерная оптика |
| spelling | doaj.art-3643d45f2cbc4364aa74d6186c070d292022-12-21T19:38:02ZengSamara National Research UniversityКомпьютерная оптика0134-24522412-61792020-12-0144693193610.18287/2412-6179-CO-775Active athermalization of dual-infrared zoom lensesG.I. Greisukh0I.A. Levin1S.V. Kazin2Penza State University of Architecture and Construction, Penza, RussiaPJSC "Krasnogorsky Zavod", Krasnogorsk, RussiaPenza State University of Architecture and Construction, Penza, RussiaFor medium- and long-wavelength dual-band infrared refractive and refractive-diffractive thermal imaging zoom lenses of simple design, we show that it is possible to maintain superb and practically unchanged optical characteristics across the temperature range from –40 to +40°C in the entire range of focal length variation. Athermalization for any focal length is achieved by moving one double-lens component or a single lens along the optical axis of the lens. Considering that these optical components are not involved in the zooming process, it becomes possible to both compensate for thermal defocusing and focus the lens on the object of interest using the same focusing mechanism, while maintaining the size and tightness of the optical system.http://www.computeroptics.smr.ru/eng/KO/Annot/KO44-6/440610e.htmldual-infrared rangerefractive and refractive-diffractive zoom lensactive athermalization |
| spellingShingle | G.I. Greisukh I.A. Levin S.V. Kazin Active athermalization of dual-infrared zoom lenses Компьютерная оптика dual-infrared range refractive and refractive-diffractive zoom lens active athermalization |
| title | Active athermalization of dual-infrared zoom lenses |
| title_full | Active athermalization of dual-infrared zoom lenses |
| title_fullStr | Active athermalization of dual-infrared zoom lenses |
| title_full_unstemmed | Active athermalization of dual-infrared zoom lenses |
| title_short | Active athermalization of dual-infrared zoom lenses |
| title_sort | active athermalization of dual infrared zoom lenses |
| topic | dual-infrared range refractive and refractive-diffractive zoom lens active athermalization |
| url | http://www.computeroptics.smr.ru/eng/KO/Annot/KO44-6/440610e.html |
| work_keys_str_mv | AT gigreisukh activeathermalizationofdualinfraredzoomlenses AT ialevin activeathermalizationofdualinfraredzoomlenses AT svkazin activeathermalizationofdualinfraredzoomlenses |