Athermal design of refractive/diffractive hybrid infrared optical system

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• 作者：Yanru Jiang^a ; ^b ; Jing Wang^a ; ^b ; Qingkun Xie^a ; ^b ; Wenfei Zhang^a ; ^b ; Enshi Qu^a ; ^{quenshi@163.com}
• 关键词：Athermal design ; Refractive/diffractive hybrid system ; Chromatic correction ; Second spectrum
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：131
• 期：Complete
• 页码：592-597
• 全文大小：459 K
• 卷排序：131

文摘

Regarding the poor work conditions of military infrared optical instruments, there is usually a strong demand for athermalization and high resolution design. According to the properties of diffractive components in the optical passive athermalization, a diffractive-refractive hybrid infrared optical system working at 8 um–12 um is designed. It only contains four lenses with two aspheric and two diffractive surfaces, resulting in solutions with reducing overall size and weight, as well as enhancing performance characteristics. The MTF of this system demonstrates the optical system can realize athermalization over the temperature range from −40 °C to 60 °C. In addition, the chromatic aberration and second spectrum are corrected simultaneously.