Готові списки джерел за темами / Passive optical athermalization

Добірка наукової літератури з теми "Passive optical athermalization"

Автор: Grafiati
Опубліковано: 30 травня 2022
Оновлено: 31 травня 2022

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Статті в журналах з теми "Passive optical athermalization"

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Zhao, Lei, Zhao Hui Luan, Yan Ling Xiong, and Li Juan He. "Athermalization Design of Wide Field Medium Wave Infrared Optical System." Advanced Materials Research 981 (July 2014): 295–98. http://dx.doi.org/10.4028/www.scientific.net/amr.981.295.

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Анотація:
Based on the principle of passive optical athermalization, a wide field medium wave infrared optical system is designed for working at -40℃-60℃. A 320×240 focal plane array (FPA) detector as image plane is used in the system. The system has a field-of-view of 30°×22.72° and a relative aperture of f/2 at 3-5 µm with 100% cold shield efficiency. The modulation transfer function (MTF) of each field is greater than 0.6 at the Nyquist frequency and the maximum distortion is less than 3% at -40℃-60℃. The system can meet the demand of the excellent image quality. This work is valuable for athermalization design of wide field medium wave infrared optical system.
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2

Tyagur, V. M., O. K. Kucherenko, and A. V. Murav’ev. "Passive optical athermalization of an IR three-lens achromat." Journal of Optical Technology 81, no. 4 (April 1, 2014): 199. http://dx.doi.org/10.1364/jot.81.000199.

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3

Zhang, Yu, Ji Yang Shang, Yue Xu, and Wen Sheng Wang. "Design of Athermalized Infrared Telephoto Lens." Key Engineering Materials 552 (May 2013): 8–13. http://dx.doi.org/10.4028/www.scientific.net/kem.552.8.

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Анотація:
IR optical system is much more appropriate to be applied in cluttered and formidable conditions. The change of temperature could degrade image quality of the infrared optical system. So the athermalization becomes the difficult part and key factor in the designing of MWIR optical systems for working under temperature range of -40°C~60°C. In this paper, the infrared telephoto lens is designed; it meets the designing requirements and has good image quality. The effective focal length is 240mm and the F-number is 2.The full field of view is 3.2°. In order to balance the chromatic aberration, an aspherical surface is used in the athermalized infrared optical system. Through carefully selected optical material and reasonable optical power distribution, passive optical athermalization can be realized. The curve of MTF is close to diffraction limit. Within the working temperature, the value of MTF at 30cy/mm is always large than 0.6. The results show that the modulation transfer function (MTF) of optical system in all field of view approaches the diffraction limit at different temperature, and 80% energy concentrates in 1 pixel.
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4

Doğan, Aslı, and Akın Bacıoğlu. "Design of a passive optical athermalization of dual-band IR seeker for precision-guided systems." Journal of Modern Optics 68, no. 11 (June 9, 2021): 593–603. http://dx.doi.org/10.1080/09500340.2021.1937734.

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5

Wang, Sheng Ching, and Hsi Hsun Tsai. "The Stabilization of Central Wavelength of Fiber Bragg Gratings by Thermal Contraction Effect of Kovar Substrate." Advanced Materials Research 160-162 (November 2010): 1270–75. http://dx.doi.org/10.4028/www.scientific.net/amr.160-162.1270.

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Анотація:
A stabilized laser is essential for optical fiber communication network. One of the passive technique for stabilization of central wavelength of laser is based on the application of fiber Bragg gratings. Due to the positive coefficient of thermal expansion of optical fiber, the Bragg gratings within the fiber written by excimer laser gives about 0.01nm/oC shift on the central wavelength respect to the ambient temperature which leads serious problem in the communication network. Since both the temperature and tension force are linearly proportional to the central wavelength of fiber Bragg gratings. A feasible approach to derive the wavelength stabilization is to decrease the tension force of fiber Bragg gratings respect to the increase of ambient temperature. In this paper, a Kovar substrate with negative coefficient of thermal expansion is used to decrease the tension force while the environmental temperature increases. The experimental results show that the coefficient of thermal expansion of the Kovar substrate is negative and linearly proportional to the temperature. Thus, this Kovar substrate differing from the constant negative coefficient of thermal expansion ceramic substrate induces about 0.0085nm/C on the fiber Bragg gratings, which shows the well application of this Kovar for athermalization of the fiber Bragg gratings in optical communication system.
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6

Wang, Sheng Ching, and Hsi Hsun Tsai. "Thermal Wavelength Stabilization of Fiber Bragg Gratings Using Bi-Metal Structure." Applied Mechanics and Materials 44-47 (December 2010): 2963–67. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.2963.

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Анотація:
A stabilized laser is essential for optical fiber communication network. One of the passive technique for stabilization of central wavelength of laser is based on the application of fiber Bragg gratings. Due to the positive coefficient of thermal expansion of optical fiber, the Bragg gratings within the fiber written by excimer laser gives about 0.01nm/oC shift on the central wavelength respect to the ambient temperature which leads serious problem in the communication network. Since both the temperature and tension force are linearly proportional to the central wavelength of fiber Bragg gratings. A feasible approach to derive the wavelength stabilization is to decrease the tension force of fiber Bragg gratings respect to the increase of ambient temperature. In this paper, a bi-metal structure with similarly negative coefficient of thermal expansion is used to decrease the tension force while the environmental temperature increases. Results show that the theory provides a fundamental solution of the physical data of the temperature compensated fixture for near zero shift of central wavelength. The practical compensation of the bimetal structure is non-linear due to the thermal expansion of the arm of the fixture, while the compensation is linear respect to the ambient temperature by neglecting the thermal expansion of the arm. However, this package is feasible for mass production and can be used for athermalization of the fiber Bragg gratings in optical communication system.
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7

Ruiz-Perez, Victor I., Daniel A. May-Arrioja, and Jose R. Guzman-Sepulveda. "Passive athermalization of multimode interference devices for wavelength-locking applications." Optics Express 25, no. 5 (February 22, 2017): 4800. http://dx.doi.org/10.1364/oe.25.004800.

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8

Ivanov, Stepan E., and Galina E. Romanova. "Passive athermalization and achromatization of a two-component system with air gap." Applied Optics 60, no. 8 (March 8, 2021): 2324. http://dx.doi.org/10.1364/ao.417173.

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Дисертації з теми "Passive optical athermalization"

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Муравйов, Олександр Володимирович. "Пасивна оптична атермалізація діоптрійних об'єктивів інфрачервоних приладів". Doctoral thesis, Київ, 2015. https://ela.kpi.ua/handle/123456789/13891.

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Тези доповідей конференцій з теми "Passive optical athermalization"

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Li, Shenghui, Changcheng Yang, Jia Zheng, Ning Lan, Tao Xiong, and Yong Li. "Optical passive athermalization for infrared zoom system." In 3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, edited by Li Yang, Yaolong Chen, Ernst-Bernhard Kley, and Rongbin Li. SPIE, 2007. http://dx.doi.org/10.1117/12.783674.

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2

Schuster, Norbert. "Quantify passive athermalization in infrared imaging lens systems." In SPIE Optical Systems Design, edited by Laurent Mazuray, Rolf Wartmann, Andrew P. Wood, Marta C. de la Fuente, Jean-Luc M. Tissot, Jeffrey M. Raynor, Tina E. Kidger, et al. SPIE, 2012. http://dx.doi.org/10.1117/12.977791.

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3

Soskind, Yakov G. "Novel technique for passive athermalization of optical systems." In Diffractive Optics and Micro-Optics. Washington, D.C.: OSA, 2000. http://dx.doi.org/10.1364/domo.2000.dtud29.

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4

Khatsevich, Tatyana N., and Evgeny V. Druzhkin. "Passive athermalization of optical systems for thermal devices." In 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, edited by Oleg A. Romanovskii and Gennadii G. Matvienko. SPIE, 2021. http://dx.doi.org/10.1117/12.2601732.

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5

Rogers, John R. "Passive athermalization: required accuracy of the thermo-optical coefficients." In International Optical Design Conference, edited by Mariana Figueiro, Scott Lerner, Julius Muschaweck, and John Rogers. SPIE, 2014. http://dx.doi.org/10.1117/12.2074674.

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6

Xing, He Hong. "Long focal length large aperture optical passive athermalization MWIR optical system." In Optical Sensing and Imaging Technology and Applications, edited by Yadong Jiang, Haimei Gong, Weibiao Chen, and Jin Li. SPIE, 2017. http://dx.doi.org/10.1117/12.2282359.

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7

Bronson, Ryan S., Charles W. Micka, Jeff Grayczyk, and Daniel Lombardo. "Quantifying passive athermalization performance of high-resolution spaceborne optical assemblies." In Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems III, edited by Pascal Hallibert, Tony B. Hull, Daewook Kim, and Fanny Keller. SPIE, 2021. http://dx.doi.org/10.1117/12.2591663.

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Romanova, Galina E., and Grzegorz Pyś. "Research of aberration properties and passive athermalization of optical systems for infrared region." In SPIE Optical Systems Design, edited by Laurent Mazuray, Rolf Wartmann, and Andrew P. Wood. SPIE, 2015. http://dx.doi.org/10.1117/12.2191119.

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9

Schwertz, Katie, Dan Dillon, and Scott Sparrold. "Graphically selecting optical components and housing material for color correction and passive athermalization." In SPIE Optical Engineering + Applications, edited by R. Barry Johnson, Virendra N. Mahajan, and Simon Thibault. SPIE, 2012. http://dx.doi.org/10.1117/12.930968.

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10

Kucukcelebi, Doruk, and Dogan Ugur Sakarya. "Comparison of passive athermalization results of LWIR optical designs utilizing different infrared optical materials." In Current Developments in Lens Design and Optical Engineering XXI, edited by R. Barry Johnson, Virendra N. Mahajan, and Simon Thibault. SPIE, 2020. http://dx.doi.org/10.1117/12.2566915.

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