Passive athermalization of infrared lenses
Дата
2025-05-13
Автори
Науковий керівник
Назва журналу
Номер ISSN
Назва тому
Видавець
КПІ ім. Ігоря Сікорського
Анотація
Infrared (IR) imaging systems are critical in fields such as surveillance, remote sensing, and scientific research, but they face unique challenges due to the temperature sensitivity of IR materials and high refractive indices of IR-transparent optics. Passive optical athermalization addresses these challenges by mitigating temperature-induced focus shifts without adding size, weight, or power burdens, unlike active thermal control methods. This paper reviews the fundamentals of passive athermalization, discussing the interplay between refractive index changes and mechanical expansion. Key IR materials - such as Germanium, Zinc Selenide, Zinc Sulfide, chalcogenide glasses, and fluorides - are examined for their thermal properties and suitability for athermal design. Strategies combining optical material selection with mechanical compensation are explored, emphasizing multi-element lens design and precision engineering. Recent advances, including novel chalcogenide glasses, IR-compatible polymers, and freeform optical surfaces, are highlighted as promising solutions for next-generation IR systems. Practical guidelines for material selection, mechanical integration, design optimization, and environmental resilience are presented to aid in developing compact, lightweight, and thermally stable IR imaging platforms.
Опис
Ключові слова
infrared optics, passive optical athermalization, thermal compensation, image quality thermostabilization
Бібліографічний опис
Muraviov, O. V. Passive athermalization of infrared lenses / O. V. Muraviov, I. O. Dovbysh // XXІV Міжнародна науково-технічна конференція "Приладобудування: стан і перспективи", 13-14 травня 2025 р., м. Київ, Україна : збірник матеріалів конференції. – Київ : КПІ ім. Ігоря Сікорського, 2025. – С. 332-336. – Бібліогр. 7 назв.