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長波紅外顯微成像光學系統的設計與仿真

Design and Simulation of Long-Wavelength Infrared Microscopic Imaging Optical System

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摘要

針對像元尺寸為50 μm×50 μm的長波紅外32×32元制冷型凝視焦平面陣列探測器的需要,設計了一種工作波長位于15~35 μm的透射式長波紅外顯微成像光學系統。該系統采用一次性成像方式,且主要由系列透鏡構成,其中冷光闌置于光路的出瞳位置。通過對稱雙膠合透鏡組合來校正像差,在-20~40 ℃溫度范圍采用光學被動補償技術實現消熱像差。仿真結果表明,當所設計的光學系統的中心波長、焦距、數值孔徑、有效放大倍率和空間分辨率分別為27 μm,14 mm,0.25,10和0.1 mm時,在10 lp·mm -1特征頻率處調制傳遞函數(MTF)值達到0.369,系統包圍圓能量集中度超過80%,能夠得到清晰可辨的物像,滿足對冷光學系統短結構、高分辨率的應用需求。

Abstract

In this study, a transmission type long-wavelength infrared microscopic imaging optical system operating in wavelengths of 15-35 μm is designed to meet the demand for cooled staring focal plane array detector containing long-wavelength infrared 32×32 pixel elements and exhibiting an elemental size of 50 μm×50 μm. The designed system adopts disposable imaging and comprises a series of lenses. A cold diaphragm is positioned at exit pupil of the optical path. Symmetrical double gluing lens combination is introduced into the system to correct the aberration. Further, an optical passive compensation technique is employed to realize anti-thermal aberration at temperatures of -20 ℃ to 40 ℃. The simulation results show that the designed system exhibits a modulation transfer function (MTF) value of 0.369 and an encircled energy concentration of >80% at a characteristic frequency of 10 lp·mm -1 when its center wavelength, focal length, numerical aperture, effective magnification, and spatial resolution are 27 μm, 14 mm, 0.25, 10, and 0.1 mm, respectively. Furthermore, a clear distinguishable image can be obtained using the designed system. The designed system satisfies the requirement of short structure and high resolution of cold optical system.

Newport宣傳-MKS新實驗室計劃
補充資料

中圖分類號:O43

DOI:10.3788/AOS202040.0622001

所屬欄目:光學設計與制造

基金項目:中國科學院前沿科學重點研究項目、國家自然科學基金重大項目、國家重點研發計劃項目;

收稿日期:2019-08-15

修改稿日期:2019-12-06

網絡出版日期:2020-03-01

作者單位    點擊查看

王宇:上海師范大學物理系, 上海 200234中國科學院上海技術物理研究所紅外物理國家重點實驗室, 上海 200083
許陽陽:上海師范大學物理系, 上海 200234中國科學院上海技術物理研究所紅外物理國家重點實驗室, 上海 200083
劉愛云:上海師范大學物理系, 上海 200234
石旺舟:上海師范大學物理系, 上海 200234
胡古今:上海師范大學物理系, 上海 200234
牟浩:中國科學院上海技術物理研究所紅外物理國家重點實驗室, 上海 200083
潘昌翊:中國科學院上海技術物理研究所紅外物理國家重點實驗室, 上海 200083
鄧惠勇:中國科學院上海技術物理研究所紅外物理國家重點實驗室, 上海 200083
戴寧:中國科學院上海技術物理研究所紅外物理國家重點實驗室, 上海 200083

聯系人作者:胡古今([email protected]); 鄧惠勇([email protected]);

備注:中國科學院前沿科學重點研究項目、國家自然科學基金重大項目、國家重點研發計劃項目;

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引用該論文

Wang Yu,Xu Yangyang,Liu Aiyun,Shi Wangzhou,Hu Gujin,Mu Hao,Pan Changyi,Deng Huiyong,Dai Ning. Design and Simulation of Long-Wavelength Infrared Microscopic Imaging Optical System[J]. Acta Optica Sinica, 2020, 40(6): 0622001

王宇,許陽陽,劉愛云,石旺舟,胡古今,牟浩,潘昌翊,鄧惠勇,戴寧. 長波紅外顯微成像光學系統的設計與仿真[J]. 光學學報, 2020, 40(6): 0622001

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