Diffractive elements in thermal imaging monofocal dual-band objectives: design and technological aspects
Using the example of the development of two simple dual-band monofocal IR objectives, approaches to the layout and design of their optical schemes are demonstrated, depending on whether compensation for the effects of temperature changes on the optical characteristics of these lenses is required or...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Samara National Research University
2024-04-01
|
| Series: | Компьютерная оптика |
| Subjects: | |
| Online Access: | https://www.computeroptics.ru/eng/KO/Annot/KO48-2/480207e.html |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832540875286118400 |
|---|---|
| author | G.I. Greisukh I.A. Levin O.A. Zakharov |
| author_facet | G.I. Greisukh I.A. Levin O.A. Zakharov |
| author_sort | G.I. Greisukh |
| collection | DOAJ |
| description | Using the example of the development of two simple dual-band monofocal IR objectives, approaches to the layout and design of their optical schemes are demonstrated, depending on whether compensation for the effects of temperature changes on the optical characteristics of these lenses is required or not. It is shown that in the case when thermal compensation is not required, superior optical characteristics can be achieved in a simple triplet, in which the flat surface of the frontal fractional lens carries a diffractive microstructure. In the case of passive athermalization, the optical scheme of the objective becomes more complicated and consists of refractive two-line power and correction components, in the latter of which the flat surface of one of the lenses carries a diffractive microstructure. Due to highly efficient diffractive microstructures, the longitudinal chromaticism of both objectives is reduced almost to the diffraction limit and, in combination with a low level of residual monochromatic aberrations at high light intensity, the maximum resolution is provided for uncooled microbolometers used as matrix receivers. |
| format | Article |
| id | doaj-art-01aa9da32e094fcba9f6e567d57503e4 |
| institution | Kabale University |
| issn | 0134-2452 2412-6179 |
| language | English |
| publishDate | 2024-04-01 |
| publisher | Samara National Research University |
| record_format | Article |
| series | Компьютерная оптика |
| spelling | doaj-art-01aa9da32e094fcba9f6e567d57503e42025-02-04T12:32:14ZengSamara National Research UniversityКомпьютерная оптика0134-24522412-61792024-04-0148221021610.18287/2412-6179-CO-1336Diffractive elements in thermal imaging monofocal dual-band objectives: design and technological aspectsG.I. Greisukh0I.A. Levin1O.A. Zakharov2Penza State University of Architecture and ConstructionPJSC "Krasnogorsky Zavod"Penza State University of Architecture and ConstructionUsing the example of the development of two simple dual-band monofocal IR objectives, approaches to the layout and design of their optical schemes are demonstrated, depending on whether compensation for the effects of temperature changes on the optical characteristics of these lenses is required or not. It is shown that in the case when thermal compensation is not required, superior optical characteristics can be achieved in a simple triplet, in which the flat surface of the frontal fractional lens carries a diffractive microstructure. In the case of passive athermalization, the optical scheme of the objective becomes more complicated and consists of refractive two-line power and correction components, in the latter of which the flat surface of one of the lenses carries a diffractive microstructure. Due to highly efficient diffractive microstructures, the longitudinal chromaticism of both objectives is reduced almost to the diffraction limit and, in combination with a low level of residual monochromatic aberrations at high light intensity, the maximum resolution is provided for uncooled microbolometers used as matrix receivers.https://www.computeroptics.ru/eng/KO/Annot/KO48-2/480207e.htmldiffractive optical elementmonofocal dual-band ir objectivepassive athermalizationapochromatizationoptical circuit layoutoptical characteristics |
| spellingShingle | G.I. Greisukh I.A. Levin O.A. Zakharov Diffractive elements in thermal imaging monofocal dual-band objectives: design and technological aspects Компьютерная оптика diffractive optical element monofocal dual-band ir objective passive athermalization apochromatization optical circuit layout optical characteristics |
| title | Diffractive elements in thermal imaging monofocal dual-band objectives: design and technological aspects |
| title_full | Diffractive elements in thermal imaging monofocal dual-band objectives: design and technological aspects |
| title_fullStr | Diffractive elements in thermal imaging monofocal dual-band objectives: design and technological aspects |
| title_full_unstemmed | Diffractive elements in thermal imaging monofocal dual-band objectives: design and technological aspects |
| title_short | Diffractive elements in thermal imaging monofocal dual-band objectives: design and technological aspects |
| title_sort | diffractive elements in thermal imaging monofocal dual band objectives design and technological aspects |
| topic | diffractive optical element monofocal dual-band ir objective passive athermalization apochromatization optical circuit layout optical characteristics |
| url | https://www.computeroptics.ru/eng/KO/Annot/KO48-2/480207e.html |
| work_keys_str_mv | AT gigreisukh diffractiveelementsinthermalimagingmonofocaldualbandobjectivesdesignandtechnologicalaspects AT ialevin diffractiveelementsinthermalimagingmonofocaldualbandobjectivesdesignandtechnologicalaspects AT oazakharov diffractiveelementsinthermalimagingmonofocaldualbandobjectivesdesignandtechnologicalaspects |