CAJ | 학술논문

基于数字微镜器件(digital micromirror device，DMD)的红外景象模拟器能够为红外系统性能测试与评估提供先进的手段。根据 DMD 的工作原理，确定了以分光棱镜来连接照明系统和投影系统的红外景象模拟器总体方案。探讨了红外景象模拟器投影光学系统的像差特性、光学设计和无热化的设计方法，设计了一套工作在长波红外8～12μm，F#为2.8，视场角为3°的投影光学系统，并对该系统在?40～60℃之间进行光学被动式无热化设计。结果表明：该系统在所要求的温度范围内，光学传递函数均接近衍射极限，成像质量满足系统的设计要求，并具有辐射能量损失小、分辨率高、结构紧凑等特点。
기우수자미경기건(digital micromirror device，DMD)적홍외경상모의기능구위홍외계통성능측시여평고제공선진적수단。근거 DMD 적공작원리，학정료이분광릉경래련접조명계통화투영계통적홍외경상모의기총체방안。탐토료홍외경상모의기투영광학계통적상차특성、광학설계화무열화적설계방법，설계료일투공작재장파홍외8～12μm，F#위2.8，시장각위3°적투영광학계통，병대해계통재?40～60℃지간진행광학피동식무열화설계。결과표명：해계통재소요구적온도범위내，광학전체함수균접근연사겁한，성상질량만족계통적설계요구，병구유복사능량손실소、분변솔고、결구긴주등특점。
The infrared scene simulator based on DMD provides the advanced means for the performance testing and evaluation of the infrared system. According to the working principle of DMD, the general scheme of infrared scene simulator is determined, that the illumination system is connected to projection system with the dichroic prism. The aberration properties and optical design and athermal design method of the projection optical system are discussed. A projection optical system is designed, which working waveband is 8~12μm long wave infrared band, F # is 2.8, the field of view is 3°. The projection system was athermalized by optical passive athermal design method at -40-60 ℃. The design result indicates that the optical transfer functions are close to the diffraction limit in the required temperature range, the image quality meet the design requirements, and the system has the characteristics with small loss radiation energy, high resolution and compact structure.