CAJ | 학술논문

介绍了多重结构中波红外系统光学被动无热化设计的方法，设计了一个双视场无热化中波红外光学系统。该系统由变焦系统和二次成像系统构成，采用光学被动无热化技术设计，通过轴向移动一组（2个）光学元件实现系统变焦；采用硅、锗两种材料及引入两个非球面实现光学被动无热化设计。系统工作波段为4．5～5．1μm，结构紧凑，满足100％冷光阑效率，像质评定结果表明，光学系统在全温度范围内（-60～70℃）双视场像质良好，证明了该方法的正确性与可行性。
개소료다중결구중파홍외계통광학피동무열화설계적방법，설계료일개쌍시장무열화중파홍외광학계통。해계통유변초계통화이차성상계통구성，채용광학피동무열화기술설계，통과축향이동일조（2개）광학원건실현계통변초；채용규、타량충재료급인입량개비구면실현광학피동무열화설계。계통공작파단위4．5～5．1μm，결구긴주，만족100％랭광란효솔，상질평정결과표명，광학계통재전온도범위내（-60～70℃）쌍시장상질량호，증명료해방법적정학성여가행성。
A method for passive optical athermalization design of middle wavelength infrared optical system with multiple lenses is introduced,and an athermalized middle wavelength infrared dual-FOV optical system was designed .The optical system contains a zoom objective system and a secondary imaging system,and adopts the technology of passive athermalization optical design .The zoom function is achieved by moving a set of optical components ( 2 elements ) axially .A passive athermalization optical design is presented by using crystal materials Si and Ge,and two aspherical surfaces .The results show that the infrared zoom optical system in the 4.5 ~5.1 μm wavelength possesses a compact structure,100% cold shield efficiency,and better image quality in the temperature range from -60℃to +70℃,thereby the correctness and feasibility of the design method are proved .